RoomAiContioners
AUTO FAN
CONTINUOUS
AUTO
C
F
FAN MODE
S
Y
STEM
POWER
FAN SPEED
SCHEDULE
Standard Chasis Models
CoolOnly
115-Volt:SS08N10*,SS10N10*,SS12N10*,SS14N10*, SM15N10*
208-230-Volt:
SS12N30*,SS15N30*,SM18N30*,SM21N30*
SM24N30*,SL22N30*, SL24N30*, SL28N30*, SL36N30*
Cool
CoolwithElectricHeat
208-230-Volt: ES12N33*, ES15N33*, EM18N34*, EM24N34*, EL36N35*
Electric Heat
Heat Pump
Heat Pump with Electric Heat
208-230-Volt: YS12N33*, YM18N34*, YL24N35*
HeatPump
15-Volt:YS10N10*
Kuhl-Serv/PartsMan (9-12)
*Last character may vary
93001402_00
IMPORTANT SAFETY INFORMATION
The information contained in this manual is intended for use by a qualified service technician who is familiar
with the safety procedures required for installation and repair, and who is equipped with the proper tools
and test instruments required to service this product.
Installation or repairs made by unqualified persons can result in subjecting the unqualified person making
such repairs as well as the persons being served by the equipment to hazards resulting in injury or
electrical shock which can be serious or even fatal.
Safety warnings have been placed throughout this manual to alert you to potential hazards that may be
encountered. If you install or perform service on equipment, it is your responsibility to read and obey these
warnings to guard against any bodily injury or property damage which may result to you or others.
Your safety and the safety of others are very important.
We have provided many important safety messages in this manual and on your appliance. Always read
and obey all safety messages.
This is a Safety Alert symbol.
This symbol alerts you to potential hazards that can kill or hurt you and others.
All safety messages will follow the safety alert symbol with the word “WARNING”
or “CAUTION”. These words mean:
You can be killed or seriously injured if you do not follow instructions.
WARNING
You can receive minor or moderate injury if you do not follow instructions.
CAUTION
All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury,
and tell you what will happen if the instructions are not followed.
A message to alert you of potential property damage will have the
word “NOTICE”. Potential property damage can occur if instructions
are not followed.
NOTICE
PERSONAL INJURY OR DEATH HAZARDS
ELECTRICAL HAZARDS:
•
Unplug and/or disconnect all electrical power to the unit before performing inspections,
maintenance, or service.
•
•
•
Make sure to follow proper lockout/tag out procedures.
Always work in the company of a qualified assistant if possible.
Capacitors, even when disconnected from the electrical power source, retain an electrical charge
potential capable of causing electric shock or electrocution.
•
•
Handle, discharge, and test capacitors according to safe, established, standards, and approved
procedures.
Extreme care, proper judgment, and safety procedures must be exercised if it becomes necessary
to test or troubleshoot equipment with the power on to the unit.
2
•
•
Do not spray or pour water on the return air grille, discharge air grille, evaporator coil, control panel,
and sleeve on the room side of the air conditioning unit while cleaning.
Electrical component malfunction caused by water could result in electric shock or other electrically
unsafe conditions when the power is restored and the unit is turned on, even after the exterior is dry.
•
•
•
•
•
•
•
Never operate the A/C unit with wet hands.
Use air conditioner on a single dedicated circuit within the specified amperage rating.
Use on a properly grounded outlet only.
Do not remove ground prong of plug.
Do not cut or modify the power supply cord.
Do not use extension cords with the unit.
Follow all safety precautions and use proper and adequate protective safety aids such as: gloves,
goggles, clothing, adequately insulated tools, and testing equipment etc.
•
Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.
REFRIGERATION SYSTEM REPAIR HAZARDS:
•
•
•
Use approved standard refrigerant recovering procedures and equipment to relieve pressure before
opening system for repair.
Do not allow liquid refrigerant to contact skin. Direct contact with liquid refrigerant can result in minor
to moderate injury.
Be extremely careful when using an oxy-acetylene torch. Direct contact with the torch’s flame or hot
surfaces can cause serious burns.
•
•
•
Make sure to protect personal and surrounding property with fire proof materials.
Have a fire extinguisher at hand while using a torch.
Provide adequate ventilation to vent off toxic fumes, and work with a qualified assistant whenever
possible.
•
•
•
Always use a pressure regulator when using dry nitrogen to test the sealed refrigeration system for
leaks, flushing etc.
Make sure to follow all safety precautions and to use proper protective safety aids such as: gloves,
safety glasses, clothing etc.
Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.
MECHANICAL HAZARDS:
•
Extreme care, proper judgment and all safety procedures must be followed when testing,
troubleshooting, handling, or working around unit with moving and/or rotating parts.
•
Be careful when, handling and working around exposed edges and corners of the sleeve, chassis,
and other unit components especially the sharp fins of the indoor and outdoor coils.
•
•
Use proper and adequate protective aids such as: gloves, clothing, safety glasses etc.
Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.
3
PROPERTY DAMAGE HAZARDS
FIRE DAMAGE HAZARDS:
•
•
•
•
•
•
•
•
Read the Installation/Operation Manual for the air conditioning unit prior to operating.
Use air conditioner on a single dedicated circuit within the specified amperage rating.
Connect to a properly grounded outlet only.
Do not remove ground prong of plug.
Do not cut or modify the power supply cord.
Do not use extension cords with the unit.
Be extremely careful when using acetylene torch and protect surrounding property.
Failure to follow these instructions can result in fire and minor to serious property damage.
WATER DAMAGE HAZARDS:
•
Improper installation, maintenance or servicing of the air conditioner unit can result in water damage
to personal items or property.
•
•
•
Insure that the unit has a sufficient pitch to the outside to allow water to drain from the unit.
Do not drill holes in the bottom of the drain pan or the underside of the unit.
Failure to follow these instructions can result in damage to the unit and/or minor to serious property
damage.
4
INTRODUCTION
This service manual is designed to be used in conjunction with the installation and operation manuals provided with
each air conditioning system.
This service manual was written to assist the professional RAC (Room Air Conditioner) service technician to quickly
and accurately diagnose and repair malfunctions.
This manual will deal with subjects in a general nature.
COMPONENTS IDENTIFICATION
Accumulator
Outdoor Grille
Discharge Air
Shroud brace
Compressor
Fresh Air Vent
Reversing Valve
Evaporator Coil
Condense/Fan Shroud
Condenser Coil
Sleeve
Electronic Control
Board
Control Key Pad
Support Bar
Air Intake Vents
Blower Wheel
Fan Blade
Fan/Blower Motor
Base Pan
Air Intake From
Sides and Bottom
Control Key Pad
Chassis Pull
Out Handle
(User Interface)
IMPORTANT: It will be necessary for you to accurately identify the unit you are servicing, so you can be certain of a
proper diagnosis and repair (See Unit Identification code on page 6).
MODEL AND SERIAL NUMBER LOCATION
Register your air conditioner
Model information can be found on the name
plate behind the front cover.
For your future convenience, record the model
information here.
MODEL NUMBER
SERIAL NUMBER
PURCHASE DATE
5
UNIT IDENTIFICATION
Model Number Code
MODEL NUMBER VOLTS
AIR CONDITIONING CO. YS10M10A 60 HZ
SAN ANTONIO, TEXAS SERIAL NUMBER VOLTS MIN 108 EER 12.0
ASSEMBLED IN MEXICO LICY00008 AMPS 8.0
1
1
15
PH
COOLING
BTH/HR 6500 BTH/HR 6500 30.1 OZ R410A 600 PSIG HS XXXXXXXXX
EER 10.4
AMPS 7.0
HEATING
REFRIGERANT XXXXXXXXX XXXXXXXXXX FUSE PROTECTED
CIRCUITS USE 15A
300 PSIG LS XXXXXXXXXX TIME DELA FUSE
XXXXXXXXXX
U
/
X
L
XX
XXXXX
XXXXXXXXXX
Y
S S 08M 1 0 B A
MODEL NUMBER
AIR CONDITIONING CO. YS10M10A
SAN ANTONIO, TEXAS SERIAL NUMBER
ASSEMBLED IN MEXICO LICY00008
9th Digit, Engineering Suffix
Major modification
Subject to change
1st Digit – Function
8th Digit, Marketing Suffix
Indicates modification
Subject to change
S = Straight Cool, Value Series
Y = Heat Pump
E = Electric Heat
7th Digit – Options
0 = Straight Cool &
Heat Pump Models
2nd Digit
3 = 3 KW Heat Strip, Nominal
4 = 4 KW Heat Strip, Nominal
5 = 5 KW Heat Strip, Nominal
S = Small Chassis
M = Medium Chassis
L = Large Chassis
6th Digit – Voltage
1 = 115 Volts
3 = 230-208 Volts
3rd and 4th Digit - Approximate
BTU/HR in 1000s (Cooling)
Heating BTU/Hr capacity listed in the
Specification/Performance Data Section
5th Digit
Alphabetical Modifier
RAC Serial Number Identification Guide
Serial Number
Decade Manufactured
A
B
A
R
00001
L=0
A=1
B=2
C=3
D=4
E=5
F=6
G=7
H=8
J=9
Production Run Number
Year Manufactured
Product Line
R = RAC
A=1
B=2
C=3
D=4
E=5
F=6
G=7
H=8
J=9
K=0
Month Manufactured
A=Jan D=Apr G=Jul K=Oct
B=Feb E=May H=Aug L=Nov
C=Mar F=Jun J=Sept M=Dec
6
REFRIGERATION SYSTEM PERFORMANCE DATA
EVAP. AIR TEMP. DEG.
F
OPERATING
PRESSURES
R-410A
REF.
BREAKER
FUSE
60 Hertz
Amps
15
COOLING
PERFORMANCE
DATA*
ELECTRICAL RATINGS
CONDENSER Discharge Suction
Sub-
Cooling
Super Heat
Voltage
Temp. TEMP DEG. F
Temp
Temp
Amps
Cool
6.1
7.8
7.7
Amps Locked Rotor Charge in
Discharge Air
Suction Discharge
Drop F.
26
21
26
24
Heat
Amps
32.0
50.0
50.0
55.0
OZ.
26.0
26.5
27.0
30.0
SS08N10-A
YS10N10-A
SS10N10-A
SS12N10-A
54
59
54
56
114
115
114
119
153
155
157
170
65
67
68
60
7
12
16
14
19
14
17
25
151
147
137
135
400
395
392
423
115
115
115
115
7.6
15
15
15
10.0
SS14N10-A
SS12N30-A
ES12N33-A
YS12N30-A
55
47
47
61
25
33
33
19
120
114
114
118
171
155
155
169
62
58
58
69
14
10
10
18
23
18
18
21
141
134
135
137
390
393
393
413
12.0
4.8
4.8
5.2
63.0
30.0
30.0
26.0
31.0
31.5
31.5
32.0
115
15
15
20
20
230/208v
230/208v
230/208v
16.0
5.6
SS15N30-A
ES15N33-A
SM15N10-A
SM18N30-A
EM18N34-A
54
54
55
57
57
26
26
25
23
23
119
119
118
120
120
174
174
153
169
169
59
59
58
61
61
12
12
10
14
14
34
34
18
22
22
127
127
140
136
136
420
420
410
422
422
6.4
6.4
12.6
7.4
7.4
32.0
32.0
63.0
42.0
42.0
33.5
33.5
37.0
39.5
39.5
230/208v
230/208v
115
230/208v
230/208v
15
20
15
15
30
16.0
19.5
8.5
YM18N34-A
SM21N30-A
SM24N30-A
EM24N34-A
YL24N35-A
SL22N30-A
SL24N30-A
SL28N30-A
48
60
45
45
58
54
54
54
32
20
35
35
22
26
26
26
118
123
127
127
119
119
123
122
169
175
175
175
174
159
163
173
53
65
50
50
64
59
58
60
10
10
10
10
22
10
16
11
21
20
28
28
20
20
19
26
126
130
119
119
124
139
132
139
413
448
457
457
417
409
435
445
8.5
9.4
11.2
11.2
11.1
9.4
44.0
46.0
60.5
60.5
47.0
48.0
47.0
60.0
40.0
40.0
43.6
43.5
73.0
57.0
69.0
70.5
230/208v
230/208v
230/208v
230/208v
230/208v
230/208v
230/208v
230/208v
30
15
20
30
30
15
20
20
19.5
12.2
11.2
12.7
SL36N30-A
EL36N35-A
52
52
28
28
130
130
190
190
56
56
13
13
33
33
126
126
480
480
18.0
18.0
88.0
88.0
72.0
72.0
230/208v
230/208v
30
30
24.0
*Rating Conditions: 80 degrees F, room air temp. & 50% relative humidity, with 95 degree F, outside air temp & 40% relative humidity, all
systems use R-410A. Test done at highest unit fan speed.
®
SPECIFICATIONS
ENERGY STAR models
Energy
Estimated
Yearly
Operating
Cost
Moisture
Removal -
COP Pints/HR
Volts
Cooling
Amps
Cooling
Watts
Heating
Amps
Heating
Watts
Ratio
EER
Net Ship
MODEL
Cooling Btu
Heating Btu
Rated
CFM Sleeve Wt Wt.
®
Kühl
SS08N10
SS10N10
SS12N10
SS14N10
SS12N30
SS15N30
SM15N10
SM18N30
SM21N30
SM24N30
SL22N30
SL24N30
SL28N30
7900
-
-
-
-
-
-
-
-
-
-
-
-
-
-
115
115
6.1
7.7
677
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
11.7
11.2
$54
$67
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1.0
2.0
3.0
3.5
2.8
3.5
3.5
4.6
6.0
10.0
6.0
7.0
8.5
12.0
265
260
300
325
275
360
360
350
425
390
625
640
600
725
S
S
99 121
106 136
112 136
116 133
112 134
116 136
141 154
140 158
132 153
152 167
191 212
192 213
193 214
212 227
*
*
*
9500
848
12000
115
10.0
1111
10.8
$88
S
14000
115
12.0
1444
9.7
$115
$84
S
11500/11200
14500/14300
14800
230/208
230/208
115
4.8/4.9
6.4/6.8
12.0
1055/1027
1480/1459
1358
10.9/10.9
9.8/9.8
10.9
S
*
$112
$109
$131
$173
$206
$174
$207
$229
$338
S
M
M
M
M
L
*
*
*
17500/17200
20500/20000
22300/22000
21000/20500
24000/23800
27500/27000
36000/35700
230/208
230/208
7.4/8.0
9.4/10.3
1635/1607
2181/2128
2590/2550
2188/2092
2553/2532
2926/2872
4235/4200
10.7/10.7
9.4/9.4
8.6/8.6
9.6/9.8
9.4/9.4
9.4/9.4
8.5/8.5
230/208 11.2/11.9
230/208 9.6/10.2
*
*
*
230/208 11.2/12.0
230/208 13.5/14.4
230/208 19.0/20.5
L
L
SL36N30
L
®
Kühl + Heat Pump
YS10N10*
YS12N33
YM18N34
9400
7500
115
7.8
855
7.6
743
11.0
10.5/10.5
9.9/9.9
9.4/9.4
$68
$87
3.0
1.9
3.0
5.4
7.0
285
265
370
600
S
S
109 131
115 136
141 152
197 212
*
*
*
*
11500/11300
18200/17800
23500/23000
9400/9000
17900/17700
23500/23000
230/208
230/208
5.2/5.4
8.5/8.9
1095/1076
1808/1788
2500/2447
5.6/5.8
8.5/8.7
12.2/14.3
1132/1139
1833/1761
2610/2575
2.4/2.3
2.5/2.6
2.6/2.6
$147
$199
M
L
YL24N35
230/208 11.1/12.0
®
Kühl + Electric Heat
ES12N33
ES15N33
EM18N34
EM24N34
EL36N35
11500/11200
10700/8900
10700/8900
13000/10600
13000/10600
17300/14300
230/208
230/208
230/208
4.8/4.9
6.4/6.8
7.4/8.0
1055/1027
1480/1459
2590/2550
2590/2550
4235/4200
16.0/14.7
16.0/14.7
19.5/17.0
19.5/17.0
24.0/22.4
3500/2900
3500/2900
4200/3500
4200/3500
5500/4650
10.9/10.9
9.8/9.8
8.6/8.6
8.6/8.6
8.5/8.5
$84
-
-
-
-
-
2.8
3.5
275
360
350
390
725
S
S
113 128
117 133
141 158
153 166
213 225
14500/14300
17500/17200
22300/22000
36000/35700
$112
$131
$207
$338
4.6
M
M
L
230/208 11.2/11.9
230/208 19.0/20.5
10.0
12.0
* Operates on 115 volt and is not equipped with supplemental heat. Will not provide heat at temperatures below 40°F.
Friedrich room air conditioners are designed to operate in outdoor temperatures from 60° F to 115°F.
Kühl+ Heat Pump heating information (shown in red) indicates heat pump performance. Kühl+ and Chill+ Electric Heat heating information
(shown in red) indicates electric heat strip performance. For Kühl+ Heat Pump electric heating performance refer to corresponding Kühl+
Electric Heat model.
R-410A
As an ENERGY STAR® partner, Friedrich Air Conditioning Co. has determined that the selected ENERGY STAR® models meet the
ENERGY STAR®
All models use
environmentally
friendly R-410A
refrigerant.
Estimated yearly operating cost based on a 2007 national average electricity cost of 10.65 cents per kWh.
LISTED
7
Installation Information / Sleeve Dimensions
Thru-the-wall Installation
Depth Shell Depth to
Window Width
Finished Hole
Minimum
Extension
Into Room*
Minimum
Extension
Outside*
16 15/16”
16 15/16”
18 15/16”
with Front
Louvers
Sleeve
Height
15 15/16"
17 15/16"
20 3/16"
Width
25 15/16"
25 15/16"
28"
Minimum** Maximum Height
Width
26 3/16”
26 3/16”
28 ¼"
Max. Depth
7 3/8"
S
M
L
29"
29"
27 3/8"
27 3/8"
29 7/8”
42"
42"
42"
16 3/16”
18 3/16”
20 3/8"
8
8
¾"
¾"
5
5
¾”
7 3/8”
¾”
35 ½”
5 3/8”
15 1/8”
16 ½"
* Minimum extensions when mounted in a window.
** Minimum widths achieved using one side curtain assembly as opposed to both in a standard installation.
NOTE: S,M and L sleeves may be installed in window with no side kits if properly installed.
Circuit Rating/ Breaker
Circuit Rating
Breaker or
T-D Fuse
Plug
Face
Wall Outlet
Power Cord
Model
(NEMA#) Length (ft.)
Appearance
SS08N10, SS10N10, SS12N10 and
SS14N10, SM15N10, YS10N10
125V - 15A
250V - 15A
5 - 15P
6
Front
SS12N30, SS15N30, SM18N30 and
SM21N30, SL22N30
6 - 15P
4
SIDE VIEW
(
SM24N30, SL24N30,SL28N30,
ES12N33, ES15N33, YS12N33
250V - 20A
250V - 30A
6 - 20P
6 - 30P
4
4
SL36N30, EM18N34, EM24N34,
EL36N35, YM18N34 and YL24N35
For the best cooling performance and highest energy efficiency
Keep the filter clean
Insulation
Make sure that your air conditioner is always in top performing condition
by cleaning the filter regularly.
Good insulation will be a big help in maintaining desirable comfort levels.
Doors should have weather stripping. Be sure to caulk around doors and
windows.
Provide good air flow
Make sure the airflow to and from the unit is clear. Your air conditioner puts the
conditioned air out at the top of the unit, and takes in unconditioned air at the
bottom. Airflow is critical to good operation. It is just as important on the outside
of the building that the airflow around the unit exterior is not blocked.
Proper installation of seal gasket
Make sure the seal gasket has been installed properly to minimize noise
and improve efficiency. If the seal gasket has not been installed, please
refer to the installation instructions.
Unit placement
If your air conditioner can beplaced in a window or wall that isshaded by atree
or another building, the unit will operate even more efficiently. Using drapes or
blinds on the sunny side of the dwelling will also add to your unit’s efficiency.
8
ELECTRICAL DATA
WARNING
ELECTRIC SHOCK HAZARD
Turn off electric power before service or
installation.
All electrical connections and wiring MUST be
installed by a qualified electrician and conform to
the National Electrical Code and all local codes
which have jurisdiction.
Failure to do so can result in personal injury or
death.
NOTICE
FIRE HAZARD
Not following the above WARNING could result in fire or
electically unsafe conditions which could cause moderate
or serious property damage.
Read, understand and follow the above warning.
Wire Size
Use ONLY wiring size recommended for single outlet branch circuit.
Fuse/Circuit Breaker
Use ONLY the correct HACR type and size fuse/circuit breaker. Read electrical ratings on unit’s
rating plate. Proper circuit protection is the responsibiity of the homeowner.
Grounding
Receptacle
Unit MUST be grounded from branch circuit through service cord to unit, or through separate
ground wire provided on permanently connected units. Be sure that branch circuit or general
purpose outlet is grounded.
The field supplied outlet must match plug on service cord and be within reach of service cord.
Do NOT alter the service cord or plug. Do NOT use an extension cord. Refer to the table above
for proper receptacle and fuse type.
The consumer - through the AHAM Room Air Conditioner Certification Program - can
be certain that the AHAM Certification Seal accurately states the unit’s cooling and
heating capacity rating, the amperes and the energy efficiency ratio.
LISTED
*HACR: Heating Air Conditioning and Refrigeration
9
WARNING
NOTICE
Do not use the LCDI device as an ON/OFF switch.
Electrical Shock Hazard
Make sure your electrical receptacle has the
same configuration as your air conditioner’s
plug. If different, consult a Licensed Electrician.
Failure to adhere to this precaution may cause
premature equipment malfunction.
Do not use plug adapters.
Do not use an extension cord.
Do not remove ground prong.
Once plugged in, the unit will operate normally without the need to reset
the LCDI device. If the LCDI device fails to trip when tested or if the power
supply cord is damaged, it must be replaced with a new power supply cord
from the manufacturer. Contact our Technical Assistance Line at (800)
541-6645. To expedite service, please have your model number available.
Always plug into a grounded 3 prong oulet.
Failure to follow these instructions can result in
death, fire, or electrical shock.
Table 1.
If you have fuses, they should be of the time delay type. Before you install
or relocate this unit, be sure that the amperage rating of the circuit breaker
or time delay fuse does not exceed the amp rating listed in Table 1.
CIRCUIT RATING
OR TIME DELAY
FUSE
REQUIRED
WALL
RECEPTACLE
MODEL
NEMA
NO.
AMP
VOLT
The cord provided will carry the proper amount of electrical power to the
unit; an extension cord may not.
SS08N10, SS10N10,
SS12N10, SS14N10,
15
125
5-15R
6-15R
SM15N10,
YS10M10
SS12N30, SS15N30,
SM18N30, SM21N30
SL22N30
15
250
Proper grounding must be maintained at all times. Two prong receptacles
SL24N30, SL28N30,
ES12N33, ES15N33,
YS12N33
20
30
250
250
6-20R
6-30R
The grounded receptacle should meet all national and local codes and
ordinances. You must use the three prong plug furnished with the air
conditioner. Under no circumstances should you remove the ground
prong from the plug.
SL36N30, EM18N34,
EL36N35, EM24N34,
YM18N34, YL24N35
All Friedrich room air conditioners are shipped from the factory with a
Leakage Current Detection Interrupter (LCDI) equipped power cord. The
LCDI device on the end of the cord meets the UL and NEC requirements
for cord connected air conditioners.
Figure 1
TEST
RESET
TEST
To test your power supply cord:
RESET
1. Plug power supply cord into a grounded 3 prong outlet.
WARNING
TEST BEFORE EACH USE
1. PRESS RESET BUTTON
2. Press RESET (See Figure 1).
2. PLUG LCDI INTO POWER
RECEPTACLE
3. PRESS TEST BUTTON,
RESET BUTTON SHOULD
POP UP
WARNING
TEST BEFORE EACH USE
1. PRESS RESET BUTTON
2. PLUG LCDI INTO POWER
RECEPTACLE
3. PRESS TEST BUTTON,
RESET BUTTON SHOULD
POP UP
3. Press TEST, listen for click; the RESET button trips and pops out.
4. PRESS TEST BUTTON,
FOR USE
DO NOT USE IF ABOVE TEST
FAILS
4. Press and release RESET (Listen for click; RESET button latches
4. PRESS TEST BUTTON,
FOR USE
DO NOT USE IF ABOVE TEST
FAILS
WHEN GREEN LIGHT IS ON
IT IS WORKING PROPERLY
and remains in). The power cord is ready for use.
WHEN GREEN LIGHT IS ON
IT IS WORKING PROPERLY
Note: in case of power failure, unit will resume operation
according to the last input settings.
15/20A LCDI Device
30A LCDI Device
FRR001
10
Kuhl Control Options
The
The “Residential” (40 Hr. Work Week) Schedule has four (4) time periods: 06:00,
08:00,18:00,and22:00. ThisoptionwillcauseyourKühlQunittoraisetheroom
temperature temporarily to 85°F during the hours when most people are away
at work, lower them again to 78°F prior to the time when most people will return
home, and then raise slightly to 82°F to maintain a comfortable temperature
overnight.
Kühl gives you a variety of options for control, programming, and
scheduling including wireless capabilities
WirelessProgrammingandControl:
The new FriedrichLink™ Adapter (sold seperately) allows you to conviently
control, program and monitor your air conditioning unit remotely from a
smartphone or computer.
The “Commercial” (7-Day Business Week) Schedule has two (2) time periods:
07:00 and 18:00. This option will cause your air conditioner to raise temperatures
to 84°F after typical working hours and on weekends when commercial spaces
are typically unoccupied.
FriedrichLink™ Adapter accessory available through Friedrich authorized
(See Control Panel Operation Instructions Section)
Pre-ProgrammedSchedulingOptions:
CustomizableProgrammingOptions:
Your unit’s digital control comes equipped with a 24-hour timer and two pre-
programmed 7-day energy management options.
Customizable schedules, with up to four temperature adjustments per day, can
eitherbeuploadedtotheunitviatheairconditioner’sbuilt-inmicroUSBinterface
or conveniently transmitted wirelessly using the new FriedrichLink™ Adapter
accessory, greatly simplifying the programming of one or multiple units.
See Figure 2.
24-Hour Timer
The 24-hour timer allows you to turn the unit off and on at pre-set times by
setting an on and off time on the unit control panel. (See page 11 for details on
timer set-up.)
Programming instructions.
Pre-programmed Energy Management
Your unit comes from the factory with two (2) Pre-programmed Energy
Management settings are shown in Addendum 1 (Residential & Commercial
Schedule Table).
Smart Grid
The Kuhl Unit is also able to be controlled by a Smart Grid.
Energy Management Schedule Options are:
1. Residential Schedule – 40 Hr. Work Week
Smart Grid is a network that brings electricity from power stations to
consumers using new technologies that allow power companies to adjust
electrical loads of residential users. Check with your local electric company
to learn more about Smart Grid programs in your area.
2. Commercial Schedule – 7-Day Business Week
Figure 2
MODEL NUMBER VOLTS 115
AIR CONDITIONING CO. YS10M10A 60 HZ PH
SAN ANTONIO, TEXAS SERIAL NUMBER VOLTS MIN 108 EER 12.0
ASSEMBLED IN MEXICO LICY00008 AMPS 8.0
COOLING
HEATING
REFRIGERANT XXXXXXXXX XXXXXXXXXX FUSE PROTECTED
U
/
1
BTH/HR 6500 BTH/HR 6500 30.1 OZ R410A 600 PSIG HS XXXXXXXXX
CIRCUITS USE 15A
300 PSIG LS XXXXXXXXXX TIME DELAY FUSE
XXXXXXXXXX
X
L
XX
XXXXX
XXXXXXXXXX
EER 10.4
AMPS 7.0
FriedrichLink™ Adapter
11
Control Panel and Display Identification
Let’s check out how to control your air conditioner. On the control panel, just above the POWER , is a liquid crystal display (LCD). All of the control panel function
buttons and mode icons can be viewed in Figure 3.
Power On – Press the button to turn on the air conditioner. The power button illuminates to indicate that the power is on. The backlight on the power switch
will automatically dim to 20% intensity after 15 seconds of inactivity. The remote control can also be used to turn power ON / OFF (See Remote Control).
Display
inactivity, the display dims to 20% intensity. After an additional 120 seconds, the display switches off. Touching any button automatically changes the display
to full brightness.
There are three control push buttons on each side of the display.
Figure 3
FAN SPEED
Sets fan speed:
LOW, MED,
HIGH or AUTO
(if equipped)
TEMPERATURE
Increment UP
TIMER / SCHEDULE
Turns ON or OFF
SYSTEM
Cycles between Sets fan to either:
AUTO, HEAT, - Cycle automatically
COOL, or FAN - Run continuously
ONLY
FAN MODE
TEMPERATURE:
Increment DOWN
:
ON / OFF
Turns unit on/off
IR WINDOW
Do not block
(if equipped)
F
SET POINT
AUTO SPEED
COOL
HEAT
FAN
ONLY
CONTROL
LOCKED
WI-FI
OPERATING
(if equipped)
AUTO
Automatically switches
between cool & heat
WAIT
(3 minutes compressor time delay)
F
C
2 DIGIT DISPLAY
Shows Setting for:
- Set Point (Temperature)
- Room Temperature
- Clock (AM/PM)
AUTO FAN
CONTINUOUS
AM
PM
ON OFF
SCHEDULE
SET POINT
ROOM TEMP
SCHEDULE ON
TIMER ON
FAN SPEED
Manually selected
fan speed
CHECK $MART
FILTER
AUTO SPEED
FILTER
Check / Clean
$MART OPERATING
(if equipped)
AUTO SPEED
Automatically selects
best fan cooling or
heating speed
12
FAN
MODE
AUTO FAN
FAN MODE – The
button allows you to select between
and
ControlPanel Operation Instructions
CONTINUOUS
modes. To select, press once and let go.
SYSTEM
SYSTEM - The
button allows you to sequentially select the modes
of operation. To select, press once and let go.
AUTO MODE
Automatically changes between HEAT and COOL
(HEAT and COOL ONLY Units)
F
COOL MODE
HEAT MODE
Not available on some models
AUTO FAN
FAN ONLY MODE
AUTO MODE COOL
SET POINT
- AUTO -
F
AUTO FAN
FRR112
AUTO FAN
When in the
mode, the fan operates only when the system has
SET POINT
a demand to cool or heat the room. Note: the fan is off (no fan speed icon),
indicating no command for cooling or heating.
AUTO FAN (Cooling Demand)
FRR204
COOL ONLY MODE
F
F
AUTO FAN
AUTO FAN
SET POINT
SET POINT
FRR103
HEAT MODE
FRR106
System has a demand for cooling. The fan is operating at a medium speed.
CONTINUOUS
F
AUTO FAN
SET POINT
F
CONTINUOUS
SET POINT
FRR104
FAN ONLY MODE
FRR113
CONTINUOUS
In the
fan mode, the fan operates all the time. The system
periodically cools or heats the fan's airflow but the flow of air does not stop.
FAN SPEED - Cooling only units have 4 fan speeds, except models
FRR105
SL28 and SL36. All Cool+Heat units only have 3 fans speeds.
When in the SYSTEM COOL or HEAT or FAN ONLY mode, you
can also select FAN MODE, FAN SPEED, TIMER SCHEDULE,
. The SYSTEM MODE does not change.
and
FAN
SPEED
FAN SPEED- The
button allows you to toggle between four speeds: LOW, MEDIUM, HIGH, MAX and AUTO speed operation. Press once and let go each time.
AUTO
FRR095
During the (SYSTEM mode COOL or HEAT), the fan speed automatically varies depending on the difference between the unit's set point on the control
panel and the actual room temperature. Let me explain. Say for example, you’re working in your garage and you open the big door for several minutes. The
system will sense a wide difference between the set point and the actual room temperature. When this occurs, the system fan speed increases to HIGH for
a period of time. The fan speed decreases, in step, as the temperature difference decreases. When the room temperature matches the system's set point,
fan speed returns to the lowest setting, and if the fan mode is on AUTO FAN, the fan will stop.
13
UP and DOWN
the system's set point (desired room temperature). These buttons are also
used for setting the Timer and other programming.
- arrows - Pressing either
or button changes
ºF - ºC Select
F
AUTO FAN
F
AUTO FAN
SET POINT
SET POINT
FRR132
To switch from degrees Fahrenheit (F) to Celsius (C), press and
buttons simultaneously for three seconds.
FRR100
F
AUTO FAN
SET POINT
FRR101
FRR133
One press equals 1 degree of change. Holding the button down for more
than 0.6 seconds starts the fast increment/decrement change of the set
point.
An“F”will flash for 5 seconds and then revert to a normal display.To change
from F to C, press the or button within 5 seconds.
TIMER SCHEDULE BUTTON -
TIMER
SCHEDULE
The
button has two main uses:
or SCHEDULE
pre-selection instructions, please see page 17.)
2. Used to turn on or activate the pre-selected TIMER or
SCHEDULE
1.Used to preselect a TIMER
function. (For
.
TIMER
SCHEDULE
3. To turn on your pre-selction, press the
button once and let
or
go. The display at bottom right will show the TIMER icon
FRR134
SCHEDULE icon
.
A “C” will flash for 5 seconds and then revert to a normal display.
Example:
TIMER is turned ON
SCHEDULE is turned ON
C
AUTO FAN
TIMER (FACTORY DEFAULT) - The TIMER is the default on new
units. The TIMER function allows you to turn the unit one time ON
and one time OFF daily at the times that you select. For example, you
can command the system to turn ON at 8:15 am and to turn OFF at
1:30 pm everyday. (To set the timer, see page 18.)
SET POINT
FRR135
SCHEDULE- The SCHEDULE
pre-programmed energy management settings: temperature, system
has two options with factory
The ºF icon goes away and the ºC icon illuminates on the normal display.
and time settings (see addendum) (for more information, see page 17).
Schedule options are:
1. Residential Schedule - 40 hour work week
2. Commercial Schedule - 5 day business week
(These factory pre-programmed settings can only be changed by using
the WiFi FriedrichLink™ adaptor, or with an upload via the mirco USB
port, with which you can create your own custom program. See page 11.)
14
DIM Function
Wait Icon
There are three separate display brightness levels, AUTO, 20% and full
(100%). To change the DIM setting, press the Power button for three
seconds.
F
AUTO FAN
SET POINT
FRR120
The wait icon illuminates when the compressor lockout is active.
Control Panel Lock
To lock the front panel controls, press and hold the
for 3 seconds. The lock icon
FRR192
FAN
SPEED
TIMER
SCHEDULE
+
buttons
The 1 indicates a DIM setting of Auto (factory default on new units). Use
illuminates to indicate the locked status.
the
or
buttons to change the setting.
During lockout, none of the control panel buttons will operate.
F
AUTO FAN
SET POINT
FRR193
FRR116
The 2 indicates a DIM setting of 20%. Press the TIMER SET button within
15 seconds to save the setting. Button inactivity for more than 15 seconds
causes the display to time out and return to the normal operating display.
FAN
SPEED
TIMER
SCHEDULE
To unlock, press and hold the
seconds.
+
buttons simultaneously for 3
External Control Status
$MART
The
icon illuminates to indicate that the system is being controlled
remotely, such as from a smart grid from a power company (for more
information, see page 10).
S
F
AUTO FAN
FRR194
SET POINT
$MART
The 3 indicates a DIM setting of 100% (full brightness). Press the TIMER
SET (Refer to Figure 8) button within 15 seconds to save the setting.
Button inactivity for more than 15 seconds causes the display to time out
and return to the normal operating display.
FRR125
Alerts
W
Check Filter
When the filter needs to be cleaned or replaced, the
CHECK
FILTER
F
icon displays.
AUTO FAN
SET POINT
F
AUTO FAN
FRR126
SET POINT
CHECK
FILTER
The
icon illuminates to indicate that the system is receiving a Wi-Fi
connection (for more information, see page 10).
FRR118
FAN
MODE
TIMER
SCHEDULE
The alert can be dismissed by pressing the
and
for 3 seconds.
15
TIMER OR SCHEDULE OPTIONS 1 OR 2 SELECTION
The control system has one Timer and two Schedule functions:
A. Timer (factory default) - Allows you to command the unit to turn
ON and OFF at a time you program. Setting the start, stop and day
can be found latter in this manual on page 18.
F
AUTO FAN
B.
Residential Schedule - When selection #1 is selected, the unit
follows a pre-programmed set of operational parameters that
covers 5 days of the week with 4 time windows during each day.
Each time window has it's own set of 8 operating parameters.
Refer to Addendum 1.
SET POINT
FRR136
C.
Commercial Schedule - When selection #2 is selected, the unit
follows a pre-programmed set of operational parameters that
covers 7 days of the week with 2 time windows during each day.
Each time window has it's own set of 8 operating parameters.
Refer to Addendum 1.
The display reverts to the normal display.
NOTE: The schedule options 1 and 2 have factory pre-programmed
settings which can only be changed by using the WiFi FriedrichLink™
adaptor (an accessory). With it, you can create your own custom
schedule program. See page 10 for more information.
TIMER
SCHEDULE
To change the TIMER/SCHEDULE selection, press and hold the
button for 3 sec, then let go.
NOTE: Once you have selected the TIMER
or SCHEDULE
we must first set the following before turning it on.
1. Set time and day
2. Set start time
3. Set stop time
See timer settings on next page.
To Turn On the Timer or Schedule Selected
FRR139
The display shows the TIMER is selected. Press the
let go.
button once and
FRR139
SCHEDULE
TIMER
Press the
SCHEDULE
button and let go. The system will operate in the mode
option (1, 2 orTimer) you selected. At the above image, TIMER is selected
and turned on.
FRR137
The display shows option 1 (Residential Schedule) is selected. Press
the button once and let go.
SCHEDULE
FRR138
The display shows option 2 (Commercial Schedule) is selected.
To save and exit selection, press the TIMER SET button (Figure 4, Page
18).
16
TIMER SETTINGS
1. Set time and day 2. Set start time 3. Set stop time
Figure 4
F
AUTO FAN
SET POINT
FRR131
Press TIMER SET (Refer to Figure 4) button to exit and save the SET
TIME function. The TIMER SET button must be pressed within 15 second.
Button inactivity for more than 15 seconds causes the display to time out
and return to the normal operating display.
Timer Start Time
SET TIME AND DAY - To adjust the unit's time press and hold the HOUR
and the MIN buttons for three seconds (Refer to Figure 4).
F
AUTO FAN
SET POINT
AM
FRR140
The display shows a normal system. Press and hold the HOUR button
(Figure 4) for 3 seconds. Note: The Timer start-stop times may be set even
when the system is in the Timer or Schedule mode.
FRR128
The unit's current hour displays. Use the
or
buttons to adjust the
hour. To change from AM to PM continue to increment (roll) the display.
Press TIMER SET (Refer to Figure 4) button to save the hour and display
the unit’s current minutes.
AM
ON
FRR141
Use the
or
button to adjust the hour. Press the TIMER SET button
(Figure 4) to adjust the minutes.
FRR129
Use the
or
buttons to adjust the minutes. The clock is now set
for 11:25 AM. Press TIMER SET (Refer to Figure 4) button to display the
unit's day setting.
ON
FRR142
Use the
or
button to adjust the minutes. Press the TIMER SET
button (Figure 4) within 15 seconds to exit and save the setting. The timer
is now set to start at 4:21 AM.
FRR130
The display will return to normal.
Use the
or
buttons to adjust the day (1 to 7). The day setting is up
to the user. If you set the current day = 1. So if today is Tuesday, then
Day 1 = Tuesday, select 1.
17
Set theTimer Stop Time
Timer ON Scenarios
Scenario 1
F
AUTO FAN
F
AUTO FAN
SET POINT
SET POINT
FRR144
The display shows a normal system. Press and hold the MIN button (Figure
4) for 3 seconds. Note the Timer start - stop times may be set even when
the system is in the Schedule mode.
FRR156
The display shows a normal operating system.
AM
OFF
FRR145
FRR157
Use the
or
button to adjust the hour. Press the TIMER SET button
If the Timer function is turned ON during the Timer’s OFF time, the
illuminates. The control system immediately turns the unit OFF.
icon
(Figure 4) to advance to the Minutes section.
Scenario 2
F
OFF
AUTO FAN
SET POINT
FRR146
Use the
or
button to adjust the minutes. Press the TIMER SET
button (Figure 4) within 15 seconds to exit and save the setting. The timer
is now set to stop at 11:55 AM. The display returns to normal.
FRR158
The display shows a normal operating system.
Turning the TIMER ON once the time and day, the start and top times
have been set:
TIMER
SCHEDULE
Press the
button once and let go.
ON/OFF scenarios.
F
AUTO FAN
NOTE: See the following TIMER
SET POINT
FRR159
If the Timer function is turned ON during the Timer’s ON time, the
illuminates. The control system immediately turns the unit OFF.
icon
18
Timer OFF Scenarios
Scenario 1
Timer - Schedule Control Block
F
AUTO FAN
SET POINT
SCHEDULE
FRR166
FRR148
The display shows the unit in Timer mode during an in-active (OFF) period.
If the unit is operating in the TIMER or SCHEDULE mode, and you press
TIMER
SCHEDULE
any bytton except the
button, the TIMER
icon begins to
blink. All button action is blocked.
F
AUTO FAN
F
AUTO FAN
SET POINT
SET POINT
SCHEDULE
FRR167
If the Timer function is turned OFF during an in-active (OFF) period, the
Timer icon turns off. The display shows a normal system.
FRR149
The TIMER
icon stops blinking after 3 seconds. You must turn the
active TIMER or SCHEDULE mode OFF before making changes. Once
Scenario 2
TIMER
SCHEDULE
the changes are made, press the
or SCHEDULE mode.
button to re-activate TIMER
If the unit is operating in the TIMER or SCHEDULE mode, and then you
TIMER
SCHEDULE
F
press any button except the
to blink.
button, the TIMER
icon begins
AUTO FAN
SET POINT
F
AUTO FAN
FRR168
The display shows the unit in Timer mode during an active (ON) period.
SET POINT
FRR150
F
All button action is blocked.
AUTO FAN
SET POINT
FRR169
If the Timer function is turned OFF during the ON time. The Timer icon
turns off. The control stays in the current state.
The display shows a normal system.
19
FAN SPEED Button - Used to sequentially select new fan speed, plus
Remote ControlOperation
FA N
AUTO operation. When the
button is pressed, the fan speed icon
SPEED
(triangle) changes to indicate the new speed level. Fan speed automatically
varies depending on the set temperature on the control panel and the actual
room temperature. For example if there is a big difference between your
set temperature and the actual room temperature, the system fan speed
increases to HIGH. It remains at this speed until the room temperature
matches the set temperature.
Remote Control - Refer to Figures 12 and 13 during operation description.
Getting Started - Install two (2) AAA batteries in the battery compartment
located on the back of the unit.
Operation - The remote control should be within 25 feet of the air
conditioner for operation. (Refer to Figure 11 for effectiveness). Press the
power button to turn the remote on. The remote will automatically power
off after 15 seconds if the buttons are not being pressed. The remote must
be on to control the unit.
TIMER
SCHEDULE
TIMER/SCHEDULE Button - The
button turns the schedule
function on and off. Press the Schedule button once to turn on the
Schedule (Residential, Commercial, or Timer) that has already been
TIMER
SCHEDULE
POWER Button - Turns remote and unit on and off.
selected on your unit. Pressing the
the schedule function off.
button a second time turns
SYSTEM Button - Allows the user to sequentially select the
HEAT , and FAN ONLY
following: AUTO - AUTO -, COOL
,
UP and DOWN Arrows - Pressing either the
(UP) or
(DOWN)
operations. When the button is pressed, the display indicates which mode
has been selected via a display message.Note that when the heating
function is not available, the system will automatically skip the HEAT mode.
button changes the desired room temperature. The factory preset lower
and upper limits are 60°F (16°C) and 99°F (37°C). These buttons are also
used to navigate between function options when using the User Menu or
Maintenance Mode.
CONTINUOUS
FAN MODE Button - Selects between automatic ( AUTO FAN ) or
AUTO FAN
operation. In the
mode, the fan only turns on and off when the
compressor operates or the heat function is enabled.
Remote Effectiveness
Hand Held Remote - Has an operating range of up to 25 ft. The infrared
remote control signal must have a clear path to transmit the command to
the air conditioning unit. The remote signal has some ability to "bounce"
off of walls and furniture similar to a television remote control. The diagram
below shows the typical operating range of the control in a standard room
with 8 ft high ceilings.
AUTO FAN
NOTE:
is not available in the FAN ONLY Mode, the display
CONTINUOUS
CONTINUOUS
indicates
. In the
mode, fan speed is
button.
FA N
SPEED
determined by your selection on the
Figure 11
TOP VIEW
25ft
25ft
7.5ft
4ft
60°
60°
SIDE VIEW
6ft
30°
45°
60°
45°
45°
8ft
25ft
60°
30°
30°
45°
30°
16ft
8ft
25ft
25ft
25ft
25ft
25ft
FRR080
Changing Temperature from F˚ (Fahrenheit) To C˚ (Celsius) or Reverse
Be within 25' of unit with the remote control. Press the SYSTEM and FAN MODE buttons at the same time and hold for
3 seconds. The display will show the temperature in Celcius. Do the same to reverse temperature to F˚ (Fahrenheit).
(The remote control operation overrides manual settings on unit)
20
Remote Control Operation (Continued)
Figure 12
AUTO
DISPLAY
AUTO FAN
CONTINUOUS
AUTO
C
F
SYSTEM
FAN MODE
POWER
SYSTEM
FAN MODE
POWER
TEMPERATURE
UP
TEMPERATURE
DOWN
FAN SPEED
SCHEDULE
SCHEDULE
FAN SPEED
FRR081
Figure 13
FAN ONLY
ICON
COOL
ICON
HEAT
ICON
SYSTEM
MODE
AUTO
AUTO FAN
FAN
MODE
CONTINUOUS
AUTO
FAN
SPEED
C F
°F / °C
ICONs
SCHEDULE
ICON
FRR082
21
UNIT OPERATION
Front Panel
System Mode Sequence (TIMER/SCHEDULE = OFF)
There are two system modes of operation. One for a cool only unit (see figure 1) and one for a heat-cool unit (see figure 2).
System parameters for each system mode are saved when exiting a system mode, and retrieved when entering a new
system mode.
Figure 1
System Mode: Cool Only Units
Timer/
Timer/
Schedule
Schedule
Figure 2
System Mode: Heat - Cool Units
Timer/
Schedule
Timer/
Schedule
Timer/
Schedule
Timer/
Schedule
22
ELECTRONIC CONTROL SEQUENCE OF OPERATION
Compressor and Reversing Valve Control
Active Mode
Compressor
Reversing Valve State
De-Energized
Energized
Cooling
On
On
Off
Off
Heat - Heat Pump
Heat - Electric
Fan Only
* The Reversing valve stays in the last state until a call for heat or cooling (see figure below)
Compressor Operation:
The reversing valve only changes when required
to provide cooling or heat pump. The RV valve
stays in it's last state until required to change.
Cooling Mode
Once the ambient temperature rises past the cool demand threshold (Cool Set Point + 1.5 ˚F) (see figure below), and
the compressor is not locked out, the cooling cycle begins. As shown in the figure below, the fan is started 5 seconds
prior to the compressor. Once the ambient temperature has been lowered to the cool set point (Cool Set Point minus
.25 ˚F), the cooling cycle starts to terminate by shutting off the compressor. After a 30 seconds delay, the fan is shut
off. (See figure below for graphic details)
23
Heating Mode Control Operation
There are two heating methods: Heat Pump and Electric Resistance Heat.
There are 3 types of units that provide heating: Heat Pump Only (Model YS10M10)
Heat Pump with Electric Heat and Cool with Electric Heat.
Heat Control Operation Heat Pump Only Unit (YS10M10 has no electric heat back-up)
Once the ambient temperature falls below the Heating Demand Threshold
(1.5 ˚F Below the Heat Set Point Temperature), the heating cycle begins. The fan is turned on 5 seconds before.
Once the ambient temperature has been raised to the Heat Satisfied Point (Set point + .25 ˚F), the compressor is
turned off. The fan is turned off 15 seconds later. The figure below illustrates the basic heat pump operation.
Satisfied Point
Heat Control (Heat Pump Only)
YS10M10 Heat Pump Defrost Cycle Operation
The defrost in this unit is an active reverse cycle. The defrost control runs in the background and determines when a
defrost cycle is required. Once initiated, the defrost cycle runs to completion.
The defrost cycle can only be initiated when the heat pump is in operation. The compressor will not be turned off to
avoid activating the compressor's time delay. The reversing valve will be switched to the cool mode position. The
indoor fan/blower will be turned off. Once the defrost cycle is finished, the system should re-enter a heating demand
cycle if required.
When the heat pump run time is 60 minutes or greater with an outdoor coil temperature of 26F degrees or lower, the
control will run an active defrost for up to 6 minutes. When the temperature at the outdoor coil reaches 54F degrees,
the heat pump heat will resume.
24
Heat Pump With Electric Heat Operation
This heating is more complex due to the possibility of two heating methods. If the ambient indoor temperature is be-
low the heat demand threshold (1.5˚F below the heat set point temperature), and the compressor is not locked out,
turn on compressor. If the ambient indoor temperature is 0.25˚F above the heat set point turn off the compressor.
If the compressor is locked out & electric heat is available:
1. Turn on the electric heat until the compressor is not locked out.
2. After lockout, turn off the electric heat, wait 5 seconds, then turn on the compressor.
If Electric Heat is Available
After the Heat button is initially pressed, the unit will run the electric heater first until the initial set point is satisfied (Hot
Start Feature). After the initial start, the unit will switch to Heat Pump heat and decide between Heat Pump heat and
Electric heat based on the following two monitored conditions:
Condition 1
If the outdoor coil temperature sensor drops to 30 ˚F or less for 2 consecutive minutes, the unit will switch to electric heat
if available. Thereafter, the unit will switch back to Heat Pump heat if the outdoor coil temperature sensor rises to 45 ˚F or
greater.
If Electric Heat is not available (out of order) and the outdoor coil temperature sensor drops to 30 ˚F or less for 2
consecutive minutes, then the compressor and fan will turn off. Thereafter, the unit will switch back to Heat Pump heat if
the outdoor coil temperature rises to 45 ˚F or greater.
25
Heat Pump With Electric Heat Operation (Continued)
Condition 2
If the Δ (delta) (set point temperature minus the ambient indoor temperature) is greater than 5 ˚F, then the unit will switch
to electric heat, if available. The unit will continue to operate with electric heat until the heat demand is satisfied. Note that
the electric heat switches on after the Δ temp passes 5°F and the heat pump switches off. Also note that the electric heat
will run until the heat demand is satisfied. When another heat demand cycle is initiated, the heat pump will run unless the Δ
temp is greater than the electric heat threshold.
Automatic Emergency Heat
If the sealed system fails with a bad reversing valve or anything that causes the indoor coil to get colder than the indoor
ambient temperature:
1) If the indoor coil thermistor senses a 5 degree temperature drop as compared to the ambient temperature thermistor
and this lasts up to 5 minutes, the control board will switch the unit to electric heat and continue heating with it.
2) At this point, error code 15 is generated; heat pump failure. Indoor coil temperature lower than indoor ambient
temperature for 5 or more degrees for 5 consecutive minutes.
Note: It is Ok to continue to use the unit with the electric heater until the heat pump is repaired.
Electric Heat Operation in Cool with Electric Heat Units
When in the Heat mode, with and without Fan Mode Auto (Fan cycling):
If the indoor ambient temperature is below the Heat Demand Threshold (Heat Set Point minus 1.5 ˚F), turn on electric heat.
If Ambient is 0.3 ˚F above the Heat Set Point turn off the electric heat.
System Mode Auto
This mode provides automatic change over between cool and heat. The auto mode runs based on the room ambient
temperature vs. the Demand Thresholds. It is only available in Heat-Cool Unit.
Notes:
There is a buffer zone between the cool and heat set points where no heating or cooling is allowed to occur. It is critical
that the Cool Demand Threshold be greater than the Heat Demand Threshold by a minimum of 3° while in the Auto
System Mode. For example, if a user enters a value for the Auto Cooling Set Point that violates the minimum Δ 3° rule, the
Auto Heating Set Point will adjust accordingly.
Automatic Change Over Delay (Cool with Heat Units)
The change over delay ensures that any system heating or cooling over shoot does not trigger an opposite demand cycle.
The change over delay = 15 min. This timer blocks the opposite demand cycle from running until the timer expires. As an
example, if the last demand was a cool cycle, and another cool cycle is requested, the timer will not block the request.
However, if the last demand cycle was a cool cycle, and heat cycle is requested, the timer will block the request until the
change over delay is expired.
26
Compressor Lock Out Time
The lockout feature ensures that the compressor is de-energized for a period of time. The timer varies randomly
from 180 to 240 seconds
The compressor lockout is initiated every time the compressor is “off” due to:
(1) Satisfying the temperature set point
(2) Changing mode to fan only or heat
(3) Turning the unit off
(4) Control is first plugged in or power is restored after failure
(5) Line power is restored from a brown out condition
Wait ICON (Hour Glass )
The wait icon will be turned on when the compressor is locked out and during demand for cooling or heat pump
compressor operation. The Wait ICON will be turned off when the condition clears.
Cooling Fan Delay
Fan cycle/Auto mode only
When unit cycles cooling ON – starts the fan 5 seconds EARLY. When unit cycles cooling OFF – DELAYS the fan
off for 30 seconds
Note: this fan delay is disabled during Test Mode
Heating Fan Delay
This is only for fan Mode Auto (Fan cycles with cool/heat operation) and not for continuous fan mode. When unit
cycles Heating ON – starts the fan 5 seconds EARLY. When unit cycles Heating OFF – DELAYS the fan off for 15
seconds
Note: the fan delay is disabled during Test Mode
Fan Speed Change Delay
Relay activation is delayed by a minimum number of seconds. The default for this value is 2 seconds and is used to
eliminate relay chatter.
Fan Only System Mode
The fan is turned on and runs at the specified manually set speed.
Only the Fan is turned on. Cool or Heat operation are off.
(This is different than FAN MODE CONTINUOUS where the fan is on with the cool or heat operation).
Fan Only Rules
1. If the SYSTEM FAN ONLY MODE is selected, the Auto fan mode is disabled, and the fan mode is forced to
continuous. In addition, the auto fan speed is disabled. If the user presses the fan speed key, the menu will skip over
the auto selection. The set point temperature display is off.
2. Any fan speed may be manually selected during Fan Only Mode.
27
Fan Operation (Front Panel Mode)
Heat – Cool – Auto – Fan Only
Models starting with SS, SM have 4 speeds. Models with SL, and all Kuhl+ have 3 speeds
Speed Selection
1
2
3
4
AUTO
AUTO Operation, but never
turns Off. Uses cool set point
or heat set point vs. ambient
temperature. When there is
no demand, operate at the
lowest available speed.
Continuous
"On" "
Turns
On"
Turns
"On" "
Turns
On"
Turns
Fan
On or
On or
On or
On or
AUTO operation turns On or
Off with heat or cool demand
Uses cool set point or heat
set point vs. ambient
Off with
heat or
cool
Off with
heat or
cool
Off with
heat or
cool
Off with
heat or
cool
AUTO
demand
demand
demand
demand
temperature
Mode
Fan Only
"On" "
On"
"On" "
On"
Disabled
Fan ICON Detail
The system may have a 3 or 4 speed fan. The Fan Speed ICON will Display as per the table below.
Note that in the AUTO mode, the speed of the fan will be shown by illuminating the number of bars in the speed triangle.
Fan Relay Operation
28
REMOVING THE FRONT COVER
REMOVING THE CHASSIS
WARNING
WARNING
ELECTRIC SHOCK HAZARD
ELECTRIC SHOCK HAZARD
Disconnect power to the unit before
servicing. Failure to follow this warning
could result in serious injury or death.
Disconnect power to the unit before
servicing. Failure to follow this warning
could result in serious injury or death.
Remove the decorative front cover. (See figure at
left). Remove the chassis Entrygard Retainer Wire by
removing the screw at the front right bottom corner
(See Figure below). Save this screw for reattachment
after reinstalling the chassis.
Remove the decorative front cover by using the tool
provided (see figure below).
Tighten the four (4) captive screws as indicated by the
arrows in the figure above before closing the front panel
(do not over tighten). Ensure the filter is in place.
Make sure curtains do not block the side air intake
Hold the cabinet stationary then use the hand grips on
both ends of the control unit support bracket to pull the
chassis out of the cabinet (see below).
Notes on reattaching the decorative front cover:
Align the cord notch over the cord and center the fresh
air lever. Align the cover over the User Interface
(UI) to ensure it is clear around it and it does not
depress any buttons. If not installed correctly the
wrench alert symbol could flash.
Before reinserting the chassis into the sleeve ensure to
properly reinstall the chassis seal gasket.
29
REPLACING THE INDOOR COIL
THERMISTOR
Replace the indoor coil sensor. Ensure to properly clip
and insulate it at the same location (see figure below).
WARNING
ELECTRIC SHOCK HAZARD
Disconnect power to the unit before
servicing. Failure to follow this warning
could result in serious injury or death.
Remove the decorative front cover (see page 29).
Remove all indicated screws below (8 total, see figure
below). Remove the Discharge Sensor and the User
Interface plugs from the control board.
REPLACING THE CONTROL BOARD
WARNING
ELECTRIC SHOCK HAZARD
Disconnect power to the unit before
servicing. Failure to follow this warning
could result in serious injury or death.
Remove the decorative front cover (see page 29).
Disconnect discharge sensor plug (red)
Disconnect the User Interface plug (white)
Remove the 3 screws indicated below.
Pull control board and mount plate out and disconnect
the following connectors from it:
Remove the screws indicated at the side and back plate
(6 total, see figure below). Partially lift the top cover and
at the same time carefully swing out from the top, the
back and side plate.
Power, capacitor, thermistors, fan, reversing valve
and heater.
Remove the hex screw holding the control board to
its mount plate. Pull out the control board (see figure
below).
Up
Swing
Out
30
30
Airflow Selection and Adjustment
Air flow direction adjustment
left or right side of the discharge opening. Each of the banks of louvers
can be directed left, right, up or down in order to achieve the most optimum
move it in the direction that you would like the air to be directed. Please
louvers than the other.
Fresh air and exhaust control
Your air conditioner has the ability to bring fresh air into the room or exhaust
stale air out of the room. The control slide is found on the upper part of
the unit (See Figure).
TO BRING IN FRESH AIR – Move the lever to the Fresh Air
position
which allows outside air to enter the room. This is useful in fall and spring as
a means of bringing in fresh outside air when using FAN ONLY . It can also
be used in the summer with the compressor in the Cooling Mode if you wish.
TO EXHAUST INDOOR AIR – Move the lever to the Exhaust
position. This will allow stale air to be expelled to the outside of the dwelling.
This is especially handy in the spring or fall when indoor air tends to get
stale, or after a social gathering involving smokers, or to remove cooking
odors.
BEST PERFORMANCE – Move the lever to the Re-Circulate Position
FRR008
31
COMPONENTS TESTING
CAPACITORS
FAN MOTOR
Asingle phase permanentsplit capacitor motor is usedto drive
the evaporator blower and condenser fan. A self-resetting
overload is located inside the motor to protect against high
temperature and high amperage conditions. (See Figure 23)
WARNING
ELECTRIC SHOCK HAZARD
Turn off electric power before servicing.
Discharge capacitor with a 20,000 Ohm 2 Watt
resistor before handling.
WARNING
ELECTRIC SHOCK HAZARD
Failure to do so may result in personal injury,
or death.
Disconnect power to the unit before
servicing. Failure to follow this warning
could result in serious injury or death.
Many motor capacitors are internally fused. Shorting the
terminals will blow the fuse, ruining the capacitor. A 20,000
ohm 2 watt resistor can be used to discharge capacitors
safely. Remove wires from capacitor and place resistor
across terminals. When checking a dual capacitor with a
capacitor analyzer or ohmmeter, both sides must be tested.
BLOWER/FAN MOTOR - TEST
1. Determine that capacitor is serviceable.
2. Disconnect fan motor wires from fan speed switch or
system switch.
Capacitor Check with Capacitor Analyzer
The capacitor analyzer will show whether the capacitor is
“open” or “shorted.” It will tell whether the capacitor is within
its micro farads rating and it will show whether the capacitor
is operating at the proper power-factor percentage. The
instrument will automatically discharge the capacitor when
the test switch is released.
3. Apply “live”testcordprobesonblackwire andcommon
terminal of capacitor. Motor should run at high speed.
4. Apply “live” test cord probes on red wire and common
terminal of capacitor. Motor should run at low speed.
5. Apply “live” test cord probes on each of the remaining
wires from the speed switch or system switch to test
intermediatespeeds. Ifthecontrolisinthe“MoneySaver”
mode and the thermostat calls for cooling, the fan will
start-thenstopafterapproximately2minutes;thenthe
fan and compressor will start together approximately 2
minutes later.
Capacitor Connections
The starting winding of a motor can be damaged by a
shorted and grounded running capacitor. This damage
usually can be avoided by proper connection of the running
capacitor terminals.
From the supply line on a typical 230 volt circuit, a 115 volt
potential exists from the “R” terminal to ground through a
possible short in the capacitor. However, from the “S” or start
terminal, a much higher potential, possibly as high as 400
volts, exists because of the counter EMF generated in the
start winding. Therefore, the possibility of capacitor failure
is much greater when the identified terminal is connected
to the “S” or start terminal. The identified terminal should
always be connected to the supply line, or “R” terminal,
never to the “S” terminal.
Blower/Fan Motor
When connected properly, a shorted or grounded running
capacitor will result in a direct short to ground from the “R”
terminal and will blow the line fuse. The motor protector will
protect the main winding from excessive temperature.
Dual Rated Run Capacitor Hook-up
32
COMPONENTS TESTING (continued)
HEATING ELEMENT
TESTING THE HEATING ELEMENT
All heat pumps and electric heat models are equipped
with a heating element with the exception of model
YS10M10. The other “YS” and “ES” models are
equipped with a 3.3 KW element. The “YM” and “EM”
models are equipped with a 4.0 KW element. The “YL”
and “EL” models are equipped with a 5.2 KW element.
WARNING
ELECTRIC SHOCK HAZARD
Disconnect power to the unit before
servicing. Failure to follow this warning
could result in serious injury or death.
Testing of the elements can be made with an ohmmeter
across the terminals after the connecting wires
have been removed. A cold resistance reading of
approximately 14.5 ohms for the 3.3 KW heater, 11.9
ohms for the 4.0 KW heater and 9.15 ohms for the 5.2
KW heater should be registered.
Heating Element
Sample
DRAIN PAN VALVE
During the cooling mode of operation, condensate
which collects in the drain pan is picked up by the con-
denser fan blade and sprayed onto the condenser coil.
This assists in cooling the refrigerant plus evaporating
the water.
The heating element contains a fuse link and a heater
limit switch. The fuse link is in series with the power
supply and will open and interrupt the power when the
temperature reaches 199°F or a short circuit occurs in
the heating element. Once the fuse link separates, a
new fuse link must be installed.
During the heating mode of operation, it is necessary
that water be removed to prevent it from freezing during
cold outside temperatures. This could cause the con-
denser fan blade to freeze in the accumulated water
and prevent it from turning.
NOTE: Always replace with the exact replacement.
The heater element has a high limit control. This
control is a bimetal thermostat mounted in the top of
the heating element.
To provide a means of draining this water, a bellows
type drain valve is installed over a drain opening in the
base pan.
Should the fan motor fail or filter become clogged,
the high limit control will open and interrupt power to
the heater before reaching an unsafe temperature
condition.
This valve is temperature sensitive and will open when
the outside temperature reaches 40°F. The valve will
close gradually as the temperature rises above 40°F to
fully close at 60°F.
The control is designed to open at 110°F ±6°F. Test
continuity below 110°F or when it is cooled off.
HEATING ELEMENT (Heat Pump Models)
The heating element for the “Y” model is energized
by an outdoor thermistor via the electronic control
board. The outdoor defrost thermistor is adjusted at
Bellows Assembly
Drain Pan Valve
a
predetermined temperature of approximately 30
degrees Fahrenheit and sensed for two consecutive
minutes, to stop the compressor and turn on the
heating element.
33
If the User Interface does not turn on:
1. Make sure the unit has the proper voltage and that it is turned on.
2. Disconnect the User Interface’s wire harness on the control board.
3. Using a voltmeter, check the top and bottom pins of the male connector (see picture below). There
should be 5VDC
4. If there is no voltage, replace the electronic control board.
6. If the connections and the wire harness are good, replace the User Interface.
User Interface
Control Board
Micro USB port for
KWIFI adaptor and
offline scheduler.
(See page #11)
User Interface
Connector
Check here for
5VDC. If no voltage,
replace board. If
there is 5VDC, check
connections and
cable. If ok, replace
User Interface.
34
REFRIGERATION SEQUENCE OF OPERATION
A good understanding of the basic operation of the
refrigeration system is essential for the service technician.
Without this understanding, accurate troubleshooting of
refrigeration system problems will be more difficult and time
consuming, if not (in some cases) entirely impossible. The
refrigeration system uses four basic principles (laws) in its
operation they are as follows:
The refrigerant leaves the condenser Coil through the
liquid line as a warm high pressure liquid. It next will pass
through the refrigerant drier (if so equipped). It is the function
of the drier to trap any moisture present in the system,
contaminants, and large particulate matter.
The liquid refrigerant next enters the metering device. The
metering device is a capillary tube. The purpose of the
metering device is to “meter” (i.e. control or measure) the
quantity of refrigerant entering the evaporator coil.
1. “Heat always flows from a warmer body to a cooler body.”
2. “Heat must be added to or removed from a substance
before a change in state can occur”
In the case of the capillary tube this is accomplished (by
design) through size (and length) of device, and the pressure
difference present across the device.
3. “Flow is always from a higher pressure area to a lower
pressure area.”
Since the evaporator coil is under a lower pressure (due to
the suction created by the compressor) than the liquid line,
the liquid refrigerant leaves the metering device entering the
evaporator coil. As it enters the evaporator coil, the larger
area and lower pressure allows the refrigerant to expand
and lower its temperature (heat intensity). This expansion is
often referred to as “boiling”. Since the unit’s blower is moving
indoor air across the finned surface of the evaporator coil,
the expanding refrigerant absorbs some of that heat. This
results in a lowering of the indoor air temperature, hence the
“cooling” effect.
4. “The temperature at which a liquid or gas changes state
is dependent upon the pressure.”
The refrigeration cycle begins at the compressor. Starting
the compressor creates a low pressure in the suction line
which draws refrigerant gas (vapor) into the compressor.
The compressor then “compresses” this refrigerant, raising
its pressure and its (heat intensity) temperature.
The refrigerant leaves the compressor through the discharge
Line as a hot High pressure gas (vapor). The refrigerant
enters the condenser coil where it gives up some of its
heat. The condenser fan moving air across the coil’s finned
surface facilitates the transfer of heat from the refrigerant to
the relatively cooler outdoor air.
The expansion and absorbing of heat cause the liquid
refrigerant to evaporate (i.e. change to a gas). Once the
refrigerant has been evaporated (changed to a gas), it is
heated even further by the air that continues to flow across
the evaporator coil.
When a sufficient quantity of heat has been removed from
the refrigerant gas (vapor), the refrigerant will “condense”
(i.e. change to a liquid). Once the refrigerant has been
condensed (changed) to a liquid it is cooled even further by
the air that continues to flow across the condenser coil.
The particular system design determines at exactly what
point (in the evaporator) the change of state (i.e. liquid to a
gas) takes place. In all cases, however, the refrigerant must
be totally evaporated (changed) to a gas before leaving the
evaporator coil.
The RAC design determines at exactly what point (in the
condenser) the change of state (i.e. gas to a liquid) takes
place. In all cases, however, the refrigerant must be
totally condensed (changed) to a Liquid before leaving the
condenser coil.
The low pressure (suction) created by the compressor
causes the refrigerant to leave the evaporator through the
suction line as a cool low pressure vapor. The refrigerant
then returns to the compressor, where the cycle is repeated.
Suction
Line
Discharge
Line
Condenser
Coil
Evaporator
Coil
Compressor
Metering
Device
Refrigerant Drier
Liquid
Line
Refrigerant
Strainer
35
R-410A SEALED SYSTEM REPAIR CONSIDERATIONS
WARNING
Refrigeration system under high pressure
Do not puncture, heat, expose to flame or incinerate.
Only certified refrigeration technicians should
service this equipment.
R410A systems operate at higher pressures than
R22 equipment. Appropriate safe service and
handling practicces must be used.
Only use gauge sets designed for use with R410A.
Do not use standard R22 gauge sets.
The following is a list of important considerations when working with R-410A equipment
•
•
•
R-410A pressure is approximately 60% higher than R-22 pressure.
R-410A cylinders must not be allowed to exceed 125 F, they may leak or rupture.
R-410A must never be pressurized with a mixture of air, it may become
flammable.
•
•
Servicing equipment and components must be specifically designed for use with R-410A and
dedicated to prevent contamination.
Manifold sets must be equipped with gauges capable of reading 750 psig (high side) and 200
psig (low side), with a 500-psig low-side retard.
•
•
Gauge hoses must have a minimum 750-psig service pressure rating
Recovery cylinders must have a minimum service pressure rating of 400 psig, (DOT 4BA400
and DOT BW400 approved cylinders).
•
•
POE (Polyol-Ester) lubricants must be used with R-410A equipment.
To prevent moisture absorption and lubricant contamination, do not leave the refrigeration
system open to the atmosphere longer than 1 hour.
•
•
•
•
Weigh-in the refrigerant charge into the high side of the system.
Introduce liquid refrigerant charge into the high side of the system.
For low side pressure charging of R-410A, use a charging adaptor.
Use Friedrich approved R-410A filter dryers only.
36
R-410A SEALED REFRIGERATION SYSTEM REPAIRS
IMPORTANT
SEALED SYSTEM REPAIRS TO COOL-ONLY MODELS REQUIRE THE INSTALLATION OF A LIQUID LINE DRIER.
EQUIPMENT REQUIRED:
9. High Pressure Gauge - (0 to 750 lbs.)
10. Low Pressure Gauge - (-30 to 200 lbs.)
11. Vacuum Gauge - (0 - 1000 microns)
1. Voltmeter
2. Ammeter
3. Ohmmeter
12. Facilities for flowing nitrogen through refrigeration tubing
4. E.P.A. Approved Refrigerant Recovery System
during all brazing processes.
5. Vacuum Pump (capable of 200 microns or less
vacuum.)
EQUIPMENT MUST BE CAPABLE OF:
6. Acetylene Welder
1. Recovering refrigerant to EPA required levels.
7. Electronic Halogen Leak Detector capable of
detecting HFC (Hydrofluorocarbon) refrigerants.
2. Evacuation from both the high side and low side of the
system simultaneously.
8. Accurate refrigerant charge measuring device such
3. Introducing refrigerant charge into high side of the
system.
as:
a. Balance Scales - 1/2 oz. accuracy
b. Charging Board - 1/2 oz. accuracy
4. Accurately weighing the refrigerant charge introduced
into the system.
Proper refrigerant charge is essential to proper unit operation.
Operating a unit with an improper refrigerant charge will
result in reduced performance (capacity) and/or efficiency.
Accordingly, the use of proper charging methods during
servicing will insure that the unit is functioning as designed
and that its compressor will not be damaged.
WARNING
RISK OF ELECTRIC SHOCK
Unplug and/or disconnect all electrical power
to the unit before performing inspections,
maintenances or service.
Failure to do so could result in electric shock,
serious injury or death.
Too much refrigerant (overcharge) in the system is just as bad
(if not worse) than not enough refrigerant (undercharge). They
both can be the source of certain compressor failures if they
remain uncorrected for any period of time. Quite often, other
problems (such as low air flow across evaporator, etc.) are
misdiagnosed as refrigerant charge problems. The refrigerant
circuit diagnosis chart will assist you in properly diagnosing
these systems.
WARNING
HIGH PRESSURE HAZARD
Sealed Refrigeration System contains refrigerant
and oil under high pressure.
An overcharged unit will at times return liquid refrigerant
(slugging) back to the suction side of the compressor eventually
causing a mechanical failure within the compressor. This
mechanical failure can manifest itself as valve failure, bearing
failure, and/or other mechanical failure. The specific type of
failure will be influenced by the amount of liquid being returned,
and the length of time the slugging continues.
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with refrigerants.
Failure to follow these procedures could
result in serious injury or death.
Refrigerant Charging
Not enough refrigerant (undercharge) on the other hand,
will cause the temperature of the suction gas to increase to
the point where it does not provide sufficient cooling for the
compressor motor. When this occurs, the motor winding
temperature will increase causing the motor to overheat
and possibly cycle open the compressor overload protector.
Continued overheating of the motor windings and/or cycling
of the overload will eventually lead to compressor motor or
overload failure.
NOTE: Because the RAC system is a sealed system, service
process tubes will have to be installed. First install a line tap
and remove refrigerant from system. Make necessary sealed
system repairs and vacuum system. Crimp process tube
line and solder end shut. Do not leave a service valve in the
sealed system.
37
Method Of Charging / Repairs
The acceptable method for charging the sealed system is the
Weighed in Charge Method. The weighed in charge method is
applicable to all units. It is the preferred method to use, as it is
the most accurate.
The weighed in method should always be used whenever
a charge is removed from a unit such as for a leak repair,
compressor replacement, or when there is no refrigerant
charge left in the unit. To charge by this method, requires the
following steps:
1. Install a piercing valve to remove refrigerant from the
sealedsystem. (Piercing valve must be removed from the
system before recharging.)
2. Recover Refrigerant in accordance with EPA regulations.
WARNING
BURN HAZARD
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with a torch.
Failure to follow these procedures could
result in moderate or serious injury.
3. Install a process tube to sealed system.
CAUTION
FREEZE HAZARD
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with liquid refrigerant.
Failure to follow these procedures could
result in minor to moderate injury.
4. Make necessary repairs to system.
5. Evacuate system to 200 microns or less.
6. Weigh in refrigerant with the property quantity of R-410A
refrigerant.
7. Start unit, and verify performance.
WARNING
BURN HAZARD
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with a torch.
Failure to follow these procedures could
result in moderate or serious injury.
8. Crimp the process tube and solder the end shut.
38
WARNING
WARNING
ELECTRIC SHOCK HAZARD
Turn off electric power before service or
installation.
HIGH PRESSURE HAZARD
Sealed Refrigeration System contains refrigerant
and oil under high pressure.
Extreme care must be used, if it becomes
necessary to work on equipment with power
applied.
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with refrigerants.
Failure to do so could result in serious injury or
death.
Failure to follow these procedures could
result in serious injury or death.
Undercharged Refrigerant Systems
An undercharged system will result in poor performance
(low pressures, etc.) in both the heating and cooling cycle.
A check of the amperage drawn by the compressor
motor should show a lower reading. (Check the Unit
Specification.) After the unit has run 10 to 15 minutes,
check the gauge pressures. Gauges connected to system
with an undercharge will have low head pressures and
substantially low suction pressures.
Whenever you service a unit with an undercharge of
refrigerant, always suspect a leak. The leak must be
repaired before charging the unit.
To check for an undercharged system, turn the unit on,
allow the compressor to run long enough to establish
working pressures in the system (15 to 20 minutes).
During the cooling cycle you can listen carefully at the exit
of the metering device into the evaporator; an intermittent
hissing and gurgling sound indicates a low refrigerant
charge. Intermittent frosting and thawing of the evaporator
is another indication of a low charge, however, frosting
and thawing can also be caused by insufficient air over
the evaporator.
Checks for an undercharged system can be made at
the compressor. If the compressor seems quieter than
normal, it is an indication of a low refrigerant charge.
of the evaporator will not be encountered because the
refrigerant will boil later if at all. Gauges connected to
system will usually have higher head pressure (depending
upon amount of over charge). Suction pressure should be
slightly higher.
Overcharged Refrigerant Systems
Compressor amps will be near normal or higher.
Noncondensables can also cause these symptoms.
To confirm, remove some of the charge, if conditions
improve, system may be overcharged. If conditions don’t
improve, Noncondensables are indicated.
Whenever an overcharged system is indicated, always
make sure that the problem is not caused by air flow
problems. Improper air flow over the evaporator coil may
indicate some of the same symptoms as an over charged
system.
An overcharge can cause the compressor to fail, since it
would be “slugged” with liquid refrigerant.
Thechargeforanysystemiscritical. Whenthecompressor
is noisy, suspect an overcharge, when you are sure that
the air quantity over the evaporator coil is correct. Icing
39
Restricted Refrigerant System
Troubleshooting a restricted refrigerant system can be
difficult. The following procedures are the more common
problems and solutions to these problems. There are two
types of refrigerant restrictions: Partial restrictions and
complete restrictions.
at the metering device entrance to the evaporator. The
evaporator in a partial restriction could be partially frosted
or have an ice ball close to the entrance of the metering
device. Frost may continue on the suction line back to the
compressor.
A partial restriction allows some of the refrigerant to
circulate through the system.
Often a partial restriction of any type can be found by feel,
as there is a temperature difference from one side of the
restriction to the other.
With a complete restriction there is no circulation of
refrigerant in the system.
With a complete restriction, there will be no sound at the
metering device entrance. An amperage check of the
compressor with a partial restriction may show normal
current when compared to the unit specifi cation. With a
complete restriction the current drawn may be considerably
less than normal, as the compressor is running in a deep
vacuum (no load.) Much of the area of the condenser will
be relatively cool since most or all of the liquid refrigerant
will be stored there.
Restricted refrigerant systems display the same symptoms
as a “low-charge condition.”
When the unit is shut off, the gauges may equalize very
slowly.
Gauges connected to a completely restricted system
will run in a deep vacuum. When the unit is shut off, the
gauges will not equalize at all.
The following conditions are based primarily on a system
in the cooling mode.
A quick check for either condition begins at the evaporator.
With a partial restriction, there may be gurgling sounds
40
HERMETIC COMPONENTS CHECK
WARNING
BURN HAZARD
WARNING
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with a torch.
CUT/SEVER HAZARD
Be careful with the sharp edges and corners.
Wear protective clothing and gloves, etc.
Failure to follow these procedures could
result in moderate or serious injury.
Failure to do so could result in serious injury.
METERING DEVICE
Capillary Tube Systems
All units are equipped with capillary tube metering devices.
3. Switch the unit to the heating mode and observe the
gauge readings after a few minutes running time. If
the system pressure is lower than normal, the heating
capillary is restricted.
Checking for restricted capillary tubes.
1. Connect pressure gauges to unit.
2. Start the unit in the cooling mode. If after a few minutes
of operation the pressures are normal, the check valve
and the cooling capillary are not restricted.
4. If the operating pressures are lower than normal in both
the heating and cooling mode, the cooling capillary is
restricted.
CHECK VALVE
In the heating mode of operation, high pressure refrigerant
enters the check valve from the opposite direction, closing
the port (liquid line) to the outdoor coil. The flow path of
the refrigerant is then through the filter drier and heating
capillary to the outdoor coil.
A unique two-way check valve is used on the reverse cycle
heat pumps. It is pressure operated and used to direct the
flow of refrigerant through a single filter drier and to the
proper capillary tube during either the heating or cooling
cycle.
Failure of the slide in the check valve to seat properly in
either mode of operation will cause flooding of the cooling
coil. This is due to the refrigerant bypassing the heating or
cooling capillary tube and entering the liquid line.
One-way Check Valve
(Heat Pump Models)
COOLING MODE
In the cooling mode of operation, liquid refrigerant from
condenser (liquid line) enters the cooling check valve
forcing the heating check valve shut. The liquid refrigerant
is directed into the liquid dryer after which the refrigerant
is metered through cooling capillary tubes to evaporator.
(Note: liquid refrigerant will also be directed through the
heating capillary tubes in a continuous loop during the
cooling mode).
NOTE: The slide (check) inside the valve is made of teflon.
Should it become necessary to replace the check valve,
place a wet cloth around the valve to prevent overheating
during the brazing operation.
CHECK VALVE OPERATION
HEATING MODE
In the cooling mode of operation, high pressure liquid enters
the check valve forcing the slide to close the opposite port
(liquid line) to the indoor coil. Refer to refrigerant flow chart.
This directs the refrigerant through the filter drier and cooling
capillary tube to the indoor coil.
In the heating mode of operation, liquid refrigerant from
the indoor coil enters the heating check valve forcing the
cooling check valve shut. The liquid refrigerant is directed
into the liquid dryer after which the refrigerant is metered
through the heating capillary tubes to outdoor coils. (Note:
liquid refrigerant will also be directed through the cooling
capillary tubes in a continuous loop during the heating
mode).
41
REVERSING VALVE DESCRIPTION/OPERATION
WARNING
ELECTRIC SHOCK HAZARD
Disconnect power to the unit before servicing.
Failure to follow this warning could result in
serious injury or death.
The Reversing Valve controls the direction of refrigerant
“A”and“B”portsofthepilotvalve.Athirdcapillaryisacommon
return line from these ports to the suction tube on the main
valve body. Four-way reversing valves also have a capillary
tube from the compressor discharge tube to the pilot valve.
flow to the indoor and outdoor coils. It consists of a
pressure-operated, main valve and a pilot valve actuated
by a solenoid plunger. The solenoid is energized during the
heating cycle only. The reversing valves used in the RAC
system is a 2-position, 4-way valve.
The piston assembly in the main valve can only be shifted
by the pressure differential between the high and low sides
of the system. The pilot section of the valve opens and
closes ports for the small capillary tubes to the main valve
to cause it to shift.
The single tube on one side of the main valve body is the
high-pressure inlet to the valve from the compressor. The
center tube on the opposite side is connected to the low
pressure (suction) side of the system. The other two are
connected to the indoor and outdoor coils. Small capillary
tubes connect each end of the main valve cylinder to the
NOTE: System operating pressures must be near
normal before valve can shift.
42
TESTING THE REVERSING VALVE
SOLENOID COIL
Should the valve fail to shift from coooling to heating,
block the air flow through the outdoor coil and allow the
discharge pressure to build in the system. Then switch
the system from heating to cooling.
WARNING
ELECTRIC SHOCK HAZARD
Unplug and/or disconnect all electrical power
to the unit before performing inspections,
maintenances or service.
If the valve is stuck in the heating position, block the air
flow through the indoor coil and allow discharge pressure
to build in the system. Then switch the system from
heating to cooling.
Failure to do so could result in electric shock,
serious injury or death.
Should the valve fail to shift in either position after
increasing the discharge pressure, replace the valve.
The solenoid coil is an electromagnetic type coil mounted
on the reversing valve and is energized during the
operation of the compressor in the heating cycle.
Dented or damaged valve body or capillary tubes can
prevent the main slide in the valve body from shifting.
1. Turn off high voltage electrical power to unit.
2. Unplug line voltage lead from reversing valve coil.
If you determing this is the problem, replace the reversing
valve.
3. Check for electrical continuity through the coil. If you
do not have continuity replace the coil.
After all of the previous inspections and checks have
been made and determined correct, then perform the
“Touch Test” on the reversing valve.
4. Check from each lead of coil to the copper liquid line
as it leaves the unit or the ground lug. There should
be no continuity between either of the coil leads
and ground; if there is, coil is grounded and must be
replaced.
5. If coil tests okay, reconnect the electrical leads.
6. Make sure coil has been assembled correctly.
NOTE: Do not start unit with solenoid coil removed from
valve, or do not remove coil after unit is in operation. This
will cause the coil to burn out.
CHECKING THE REVERSING VALVE
NOTE: You must have normal operating pressures before
the reversing valve can shift.
WARNING
HIGH PRESSURE HAZARD
Sealed Refrigeration System contains refrigerant
and oil under high pressure.
Reversing Valve in Heating Mode
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with refrigerants.
Failure to follow these procedures could
result in serious injury or death.
Check the operation of the valve by starting the system
and switching the operation from “Cooling” to “Heating”
and then back to “Cooling”. Do not hammer on valve.
Occasionally, the reversing valve may stick in the heating
or cooling position or in the mid-position.
When sluggish or stuck in the mid-position, part of the
discharge gas from the compressor is directed back to the
suction side, resulting in excessively high suction pressure.
43
Touch Test in Heating/Cooling Cycle
6. Protectnewvalvebodyfromheatwhilebrazingwith plastic
heat sink (Thermo Trap) or wrap valve body with wet rag.
WARNING
BURN HAZARD
7. Fit all lines into new valve and braze lines into new
Certain unit components operate at
temperatures hot enough to cause burns.
valve.
Proper safety procedures must be followed,
and proper protective clothing must be
worn.
WARNING
EXPLOSION HAZARD
Failure to follow these procedures could
result in minor to moderate injury.
The use of nitrogen requires a pressure
regulator. Follow all safety procedures and
wear protective safety clothing etc.
The only definite indications that the slide is in the mid-
position is if all three tubes on the suction side of the valve
are hot after a few minutes of running time.
Failure to follow proper safety procedures
could result in serious injury or death.
8. Pressurize sealed system with a combination of R-410A
and nitrogen and check for leaks, using a suitable leak
detector. Recover refrigerant per EPA guidelines.
NOTE: A condition other than those illustrated above, and
on Page 44, indicate that the reversing valve is not shifting
properly. Both tubes shown as hot or cool must be the same
corresponding temperature.
9. Once the sealed system is leak free, install solenoid coil
on new valve and charge the sealed system by weighing
in the proper amount and type of refrigerant as shown
on rating plate. Crimp the process tubes and solder the
ends shut. Do not leave Schrader or piercing valves in
the sealed system.
Procedure For Changing Reversing Valve
WARNING
HIGH PRESSURE HAZARD
Sealed Refrigeration System contains refrigerant
and oil under high pressure.
NOTE: When brazing a reversing valve into the system, it is
of extreme importance that the temperature of the valve does
not exceed 250°F at any time.
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with refrigerants.
Wrap the reversing valve with a large rag saturated with
water. “Re-wet” the rag and thoroughly cool the valve after
each brazing operation of the four joints involved.
Failure to follow these procedures could
result in serious injury or death.
The wet rag around the reversing valve will eliminate
conduction of heat to the valve body when brazing the line
connection.
NOTICE
FIRE HAZARD
The use of a torch requires extreme care and proper
judgment. Follow all safety recommended precautions and
protect surrounding areas with fire proof materials. Have
a fire extinguisher readily available. Failure to follow this
notice could result in moderate to serious property damage.
1. Install Process Tubes. Recover refrigerant from sealed
system. PROPER HANDLING OF RECOVERED
REFRIGERANT ACCORDING TO EPA REGULATIONS
IS REQUIRED.
2. Remove solenoid coil from reversing valve. If coil is to
be reused, protect from heat while changing valve.
3. Unbraze all lines from reversing valve.
4. Clean all excess braze from all tubing so that they will
slip into fittings on new valve.
5. Remove solenoid coil from new valve.
44
COMPRESSOR CHECKS
Heat generated within the compressor shell, usually due
to recycling of the motor, is slow to dissipate. It may take
anywhere from a few minutes to several hours for the
overload to reset.
WARNING
ELECTRIC SHOCK HAZARD
Turn off electric power before service or
installation. Extreme care must be used, if it
becomes necessary to work on equipment with
power applied.
Checking the Overloads
Failure to do so could result in serious injury or
WARNING
death.
ELECTRIC SHOCK HAZARD
Locked Rotor Voltage (L.R.V.) Test
Turn off electric power before service or
installation. Extreme care must be used, if it
becomes necessary to work on equipment
with power applied.
Locked rotor voltage (L.R.V.) is the actual voltage available
at the compressor under a stalled condition.
Single Phase Connections
Failure to do so could result in serious injury or
Disconnect power from unit. Using a voltmeter, attach one
lead of the meter to the run “R” terminal on the compressor
and the other lead to the common “C” terminal of the com-
pressor. Restore power to unit.
death.
WARNING
BURN HAZARD
Certain unit components operate at
temperatures hot enough to cause burns.
Determine L.R.V.
Start the compressor with the volt meter attached; then stop
the unit. Attempt to restart the compressor within a couple
of seconds and immediately read the voltage on the meter.
The compressor under these conditions will not start and will
usually kick out on overload within a few seconds since the
pressures in the system will not have had time to equalize.
Voltage should be at or above minimum voltage of 197 VAC,
as specified on the rating plate. If less than minimum, check
for cause of inadequate power supply; i.e., incorrect wire
size, loose electrical connections, etc.
Proper safety procedures must be followed,
and proper protective clothing must be
worn.
Failure to follow this warning could result
in moderate to serious injury.
External Overloads
With power off, remove the leads from compressor
terminals. If the compressor is hot, allow the overload
to cool before starting check. Using an ohmmeter, test
continuity across the terminals of the external overload.
If you do not have continuity; this indicates that the
overload is open and must be replaced.
Amperage (L.R.A.) Test
The running amperage of the compressor is the most
important of these readings. A running amperage higher
than that indicated in the performance data indicates that a
problem exists mechanically or electrically.
Interrnal Overloads
Some model compressors are equipped with an internal
overload. The overload is embedded in the motor
windings to sense the winding temperature and/or current
draw. The overload is connected in series with the
common motor terminal.
Single Phase Running and L.R.A. Test
NOTE: Consult the specification and performance section
for running amperage. The L.R.A. can also be found on the
rating plate.
Select the proper amperage scale and clamp the meter
probe around the wire to the “C” terminal of the compressor.
Should the internal temperature and/or current draw
become excessive, the contacts in the overload will
open, turning off the compressor. The overload will
automatically reset, but may require several hours before
the heat is dissipated.
Turn on the unit and read the running amperage on the
meter. If the compressor does not start, the reading will
indicate the locked rotor amperage (L.R.A.).
Checking the Internal Overload
1. With no power to unit, remove the leads from the
compressor terminals.
2. Using an ohmmeter, test continuity between terminals
C-S and C-R. If no continuity, the compressor overload is
open and the compressor must be replaced.
Overloads
The compressor is equipped with either an external or
internal overload which senses both motor amperage
and winding temperature. High motor temperature or
amperage heats the overload causing it to open, breaking
the common circuit within the compressor.
45
Single Phase Resistance Test
Many compressor failures are caused by the following
conditions:
WARNING
ELECTRIC SHOCK HAZARD
1. Improper air flow over the evaporator.
Turn off electric power before service or
2. Overcharged refrigerant system causing liquid to be
returned to the compressor.
installation. Extreme care must be used, if it
becomes necessary to work on equipment
with power applied.
3. Restricted refrigerant system.
4. Lack of lubrication.
Failure to do so could result in serious injury or
death.
Remove the leads from the compressor terminals and set
the ohmmeter on the lowest scale (R x 1).
5. Liquid refrigerant returning to compressor causing oil
to be washed out of bearings.
Touch the leads of the ohmmeter from terminals common
to start (“C” to “S”). Next, touch the leads of the ohmmeter
from terminals common to run (“C” to “R”).
6.
Noncondensables such as air and moisture in
the system. Moisture is extremely destructive to a
refrigerant system.
Add values “C” to “S” and “C” to “R” together and
check resistance from start to run terminals (“S” to “R”).
Resistance “S” to “R” should equal the total of “C” to “S”
and “C” to “R.”
7. Capacitor (see page 34).
CHECKING COMPRESSOR EFFICIENCY
In a single phase PSC compressor motor, the highest
value will be from the start to the run connections (“S” to
“R”). The next highest resistance is from the start to the
common connections (“S” to “C”). The lowest resistance
is from the run to common. (“C” to “R”) Before replacing a
compressor, check to be sure it is defective.
The reason for compressor inefficiency is normally due
to broken or damaged suction and/or discharge valves,
reducing the ability of the compressor to pump refrigerant
gas.
WARNING
HIGH PRESSURE HAZARD
GROUND TEST
Use an ohmmeter set on its highest scale. Touch one
lead to the compressor body (clean point of contact as
a good connection is a must) and the other probe in turn
to each compressor terminal. If a reading is obtained the
compressor is grounded and must be replaced.
Sealed Refrigeration System contains refrigerant
and oil under high pressure.
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with refrigerants.
Check the complete electrical system to the compressor
and compressor internal electrical system, check to be
certain that compressor is not out on internal overload.
Failure to follow these procedures could
result in serious injury or death.
This condition can be checked as follows:
Complete evaluation of the system must be made
whenever you suspect the compressor is defective. If
the compressor has been operating for sometime, a
careful examination must be made to determine why the
compressor failed.
1. Install a piercing valve on the suction and discharge or
liquid process tube.
-
2. Attach gauges to the high and low sides of the system.
3. Start the system and run a “cooling or heating perfor
mance test.” If test shows:
A. Below normal high side pressure
B. Above normal low side pressure
C. Low temperature difference across coil
The compressor valves are faulty - replace the
compressor.
46
COMPRESSOR REPLACEMENT
Recommendedprocedureforcompressor
replacement
3. After all refrigerant has been recovered, disconnect
suction and discharge lines from the compressor and
remove compressor. Be certain to have both suction
and discharge process tubes open to atmosphere.
WARNING
4. Carefully pour a small amount of oil from the suction
stub of the defective compressor into a clean container.
RISK OF ELECTRIC SHOCK
Unplug and/or disconnect all electrical power
to the unit before performing inspections,
maintenances or service.
5. Using an acid test kit (one shot or conventional kit), test
the oil for acid content according to the instructions
with the kit.
Failure to do so could result in electric shock,
serious injury or death.
6. If any evidence of a burnout is found, no matter how
slight, the system will need to be cleaned up following
proper procedures.
1. Be certain to perform all necessary electrical and
refrigeration tests to be sure the compressor is
actually defective before replacing.
7. Install the replacement compressor.
WARNING
WARNING
HIGH PRESSURE HAZARD
Sealed Refrigeration System contains refrigerant
and oil under high pressure.
EXPLOSION HAZARD
The use of nitrogen requires a pressure
regulator. Follow all safety procedures and
wear protective safety clothing etc.
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with refrigerants.
Failure to follow proper safety procedures
result in serious injury or death.
Failure to follow these procedures could
result in serious injury or death.
8. Pressurize with a combination of R-410A and nitrogen
and leak test all connections with an electronic or
Halide leak detector. Recover refrigerant and repair
any leaks found.
2. Recover all refrigerant from the system though
the process tubes. PROPER HANDLING OF
RECOVERED REFRIGERANT ACCORDING TO
EPA REGULATIONS IS REQUIRED. Do not use
gauge manifold for this purpose if there has been
a burnout. You will contaminate your manifold and
hoses. Use a Schrader valve adapter and copper
tubing for burnout failures.
Repeat Step 8 to insure no more leaks are present.
9. Evacuate the system with a good vacuum pump capable
of a final vacuum of 200 microns or less. The system
should be evacuated through both liquid line and suction
line gauge ports. While the unit is being evacuated, seal
all openings on the defective compressor. Compressor
manufacturers will void warranties on units received not
properly sealed. Do not distort the manufacturers tube
connections.
WARNING
HIGH TEMPERATURES
Extreme care, proper judgment and all safety
procedures must be followed when testing,
troubleshooting, handling or working around
unit while in operation with high temperature
components. Wear protective safety aids
such as: gloves, clothing etc.
CAUTION
FREEZE HAZARD
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with liquid refrigerant.
Failure to do so could result in serious burn
injury.
Failure to follow these procedures could
result in minor to moderate injury.
NOTICE
FIRE HAZARD
10. Recharge the system with the correct amount of
refrigerant. The proper refrigerant charge will be
found on the unit rating plate. The use of an accurate
measuring device, such as a charging cylinder,
The use of a torch requires extreme care and proper
judgment. Follow all safety recommended precautions and
protect surrounding areas with fire proof materials. Have
a fire extinguisher readily available. Failure to follow this
notice could result in moderate to serious property damage.
electronic scales or similar device is necessary.
47
SPECIAL PROCEDURE IN THE CASE OF MOTOR
COMPRESSOR BURNOUT
WARNING
ELECTRIC SHOCK HAZARD
Turn off electric power before service or
installation.
Failure to do so may result in personal injury,
or death.
WARNING
HIGH PRESSURE HAZARD
Sealed Refrigeration System containsrefrigerant
and oil under high pressure.
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with refrigerants.
Failure to follow these procedures could
result in serious injury or death.
WARNING
EXPLOSION HAZARD
The use of nitrogen requires a pressure
regulator. Follow all safety procedures and
wear protective safety clothing etc.
Failure to follow proper safety procedures
result in serious injury or death.
1.
2.
Recover all refrigerant and oil from the system.
Remove compressor, capillary tube and filter drier
from the system.
3.
Flush evaporator condenser and all connecting
tubing with dry nitrogen or equivalent. Use approved
flushing agent to remove all contamination from
system. Inspect suction and discharge line for
carbon deposits. Remove and clean if necessary.
Ensure all acid is neutralized.
4. Reassemble the system, including new drier strainer
and capillary tube.
5. Proceed with step 8-10 on previous page.
ROTARY AND SCROLL COMPRESSOR SPECIAL
TROUBLESHOOTING AND SERVICE
Basically, troubleshooting and servicing rotary compres-
sors is the same as on the reciprocating compressor with
only one main exception:
NEVER, under any circumstances, liquid charge a rotary-
compressor through the LOW side. Doing so would cause
permanent damage to the new compressor. Use a charging
adapter.
48
ROUTINE MAINTENANCE
COILS AND BASE PAN
WARNING
The indoor coil (evaporator coil), the outdoor coil
(condenser coil) and base pan should be inspected
periodically (yearly or bi-yearly) and cleaned of all
debris (lint, dirt, leaves, paper, etc.). Clean the coils
and base pan with a soft brush and compressed air
or vacuum. If using a pressure washer, be careful
not to bend the aluminium fin pack. Use a sweeping
up and down motion in the direction of the vertical
aluminum fin pack when pressure cleaning coils.
Cover all electrical components to protect them from
water or spray. Allow the unit to dry thoroughly before
reinstalling it in the sleeve.
ELECTRIC SHOCK HAZARD
Turn off electric power before inspections,
maintenances, or service.
Extreme care must be used, if it becomes
necessary to work on equipment with power
applied.
Failure to do so could result in serious injury
or death.
NOTE: Do not use a caustic coil cleaning agent on coils or base pan.
Use a biodegradable cleaning agent and degreaser. The use
of harsh c leaning materials may lead to deterioration of the
WARNING
EXCESSIVE WEIGHT HAZARD
Use two people to lift or carry the unit, and wear
proper protective clothing.
NOTE: It is extremely important to insure that none of the electrical
and/or electronic parts of the unit get wet. Be sure to cover all
electrical components to protect them from water or spray.
Failure to do so may result in personal injury.
BLOWER WHEEL / HOUSING / CONDENSER FAN /
SHROUD
WARNING
Inspect the indoor blower and its housing, evaporator
blade, condenser fan blade and condenser shroud
periodically (yearly or bi-yearly) and clean of all debris
(lint, dirt, mold, fungus, etc.). Clean the blower housing
area and blower wheel with an antibacterial / antifungal
cleaner. Use a biodegradable cleaning agent and
degreaser on condenser fan and condenser shroud.
Use warm or cold water when rinsing these items.
Allow all items to dry thoroughly before reinstalling
them.
CUT/SEVER HAZARD
Be careful with the sharp edges and corners.
Wear protective clothing and gloves, etc.
Failure to do so could result in serious injury.
NOTICE
Units are to be inspected and serviced by qualified service
personnel only. Use proper protection on surrounding
property. Failure to follow this notice could result in
moderate or serious property damage.
ELECTRONIC / ELECTRICAL / MECHANICAL
Periodically (at least yearly or bi-yearly): inspect
all control components: electronic, electrical and
mechanical, as well as the power supply. Use proper
testing instruments (voltmeter, ohmmeter, ammeter,
wattmeter, etc.) to perform electrical tests. Use an air
conditioning or refrigeration thermometer to check
room, outdoor and coil operating temperatures.
NOTICE
Do not use a caustic coil cleaning agent on coils or base
pan. Use a biodegradable cleaning agent and degreaser,
to prevent damage to the coil and/or base pan.
AIR FILTER
BLOWER/FAN MOTOR
The motor is permanently lubricated.
The air filter should be inspected weekly and cleaned
if needed by vacuuming with a dust attachment or
by cleaning in the sink using warm water and a mild
dishwashing detergent. Dry the filter thoroughly before
reinstalling. Use caution as the coil surface can be sharp.
TO REMOVE, WASH AND REPLACE FILTER
Lower front panel. Use handle on filter to flex filter
up and out of retainer. Remove filter from unit. Clean
filter monthly or more frequently if needed. Refer to
accessories section for filter options.
49
ROUTINE MAINTENANCE (Continued)
NOTICE
Do not drill holes in the bottom of the drain pan or the
underside of the unit. Not following this notice could
result in damage to the unit or condensate water leaking
inappropriately which could cause water damage to
surrounding property.
SLEEVE / DRAIN
Inspect the sleeve and drain system periodically (at least yearly or bi-yearly) and clean of all obstructions and
debris. Clean both areas with an antibacterial and antifungal cleaner. Rinse both items thoroughly with water and
ensure that the drain outlets are operating correctly. Check the sealant around the sleeve and reseal areas as
needed.
DECORATIVE FRONT COVER
Clean the front cover when needed. Use a mild detergent. Wash and rinse with warm water. Allow it to dry
thoroughly before reinstalling it in the chassis.
The decorative front and the cabinet can be cleaned with warm water and a mild liquid detergent. Do NOT use
solvents or hydrocarbon based cleaners such as acetone, naphtha, gasoline, benzene, etc.
Use a damp (not wet) cloth when cleaning the control area to prevent water from entering the unit, and possibly
damaging the electronic control.
CLEARANCES
Inspect the surrounding area (inside and outside) to ensure that the unit’s clearances have not been compromised or
altered.
Accumulator
Outdoor Grille
Discharge Air
Compressor
Fresh Air Vent
Reversing Valve
Evaporator Coil
Condenser Coil
Sleeve
Air Intake Vents
Electronic Control
Board
Control Key Pad
Support Bar
Blower Wheel
Fan Blade
Fan/Blower Motor
Base Pan
Air Intake From
Sides and Bottom
Control Key Pad
Chassis Pull
Out Handle
(User Interface)
50
ROUTINE MAINTENANCE (Continued)
Standard filter cleaning, removal and installation instructions
Removing filter
Filter dissassembly and cleaning
STEP 1.
3
STEP 1.
NOTE:
Figure 1
Figure 3
FILTER
FILTER
GRIP
STEP 2.
Remove the filter by grabbing it from its handle, lifting it up and swinging
it out.
STEP 2.
Swing the front frame open. Clean the front frame by washing
Figure 2
Figure 4
A
FILTER
GRIP
TOP TAB
FRONT
FRAME WITH
STANDARD
MESH FILTER
HANDLE
Filter assembly
STEP 1.
onto the filter frame.
(
)
Filter installation
Install the filter back into the unit by sliding the filter halfway up,
tilt towards the front of you, then gently slide it up fully.
Do not force the filter into the unit.
51
ROUTINE MAINTENANCE (Continued)
Heat pumps operate differently
If your unit is a "Y", or heat pump model, there are some things that you
will want to be aware of. Some functions of a heat pump differ from your
unit when it is used for heating:
After Maintenance/Repair
Start-up Checklist and Notes
u
u
u
u
Inspect and ensure that all components and accessories have been
installed properly and that they have not been damaged during the
installation progress.
1. It is normal for ice to form on the outdoor coil of the heat pump.
Moisture in the outside air, passing over the coil when very cold,
will form ice.
Check the condensate water drain(s) to ensure that they are adequate
for the removal of condensate water, and that they meet the approval
of the end user.
2. If the outdoor temperature drops below 37° F (3° C), your heat
pump will automatically turn on the electric resistance heat. When
the temperature rises to 40° F (4° C), the compressor will resume
the heat pump operation. If your unit is a 115 volt model (YS10),
it is designed for use in warmer climates and does not have an
electrical heat feature, and will not provide adequate heat below
37° F (2.8° C).
Ensure that all installation instructions concerning clearances around
the unit have been adhered to. Check to ensure that the unit air filter,
indoor coil, and outdoor coil are free from any obstructions.
Ensure that the circuit breaker(s) or fuse(s) and supply circuit wire
size have been sized correctly. If the unit was supplied with a power
supply cord, insure that it is stored properly.
u
u
u
u
Ensure that the entire installation is in compliance with all applicable
national and local codes and ordinances having jurisdiction.
Secure components and accessories, such as a decorative front
cover.
Start the unit and check for proper operation of all components in
each mode of operation.
Instruct the owner or operator of the units operation, and the
manufacturer's Routine Maintenance.
NOTE: A log for recording the dates of maintenance and/or service is
recommended.
u
Present the owner or operator of the equipment with the name,
address and telephone number of the Authorized Friedrich Warranty
Service Company in the area for future reference if necessary.
NOTE: This is a warm weather appliance
The air conditioner is designed to cool in warm weather when the outside
temperature is above 60° F (15.6° C) and below 115° F (46.1° C), so it won't
cool a room if it is already cool outside. If you want to cool a room in the
spring or fall, select the FAN ONLY mode and set the Fresh Air/Exhaust
air control to Fresh Air. This will bring in a supply of cooler outside air.
Condensation is normal
Air conditioners actually pump the heat and humidity from your room to the
outside. Humidity becomes water, and your air conditioner will use most
of the water to keep the outside coil cool. If there is excessive humidity,
there may be excess water that will drip outside. This is normal operation.
Frosting
This usually occurs because of insufficient airflow across the coils, a dirty
filter, cool damp weather, or all of these. Set the SYSTEM mode to FAN
ONLY and the frost will disappear. Setting the thermostat a little warmer
will probably prevent the frosting from recurring.
Noises
All air conditioners make some noise. Friedrich units are designed to
operate as quietly as possible. An air conditioner mounted in a wall is
quieter than one mounted in a window. It is important to ensure that the
chassis seal gasket (Item 14) is properly installed (refer to installation
instructions).
52
Service and Assistance
Before calling for service, please check the “Troubleshooting Tips” section
on pages 40 and 41. This may help you to find the answer to your problem,
avoid unnecessary service calls, and save you the cost of a service call if
the problem is not due to the product itself. If you have checked the “Basic
Troubleshooting” section and still need help, it is available as follows:
You can find the name of your local Authorized Service Provider by visiting
If you require further assistance
You can call the Technical Assistance Center at 1-800-541-6645.
Before calling, please make sure that you have the complete model and
serial number, and date of purchase of your equipment available. By
providing us with this information, we will be better able to assist you.
Our specialists are able to assist you with:
u
u
u
u
u
u
Specifications and Features of our equipment.
Referrals to dealers, and distributors.
Use and Care Information.
Recommended maintenance procedures.
Installation information.
Referrals to Authorized Service Providers and Parts depots.
Available Accessories
DC-2 Drain Kit – Part No. 01900235
In some installations, excess condensate water caused by extremely humid
conditions, may result in an undesirable water drip such as on a patio or
over an entryway. MODEL DC-2 DRAIN KIT (Part No. 01900-235) can be
installed to drain excess condensation to an alternate location.
Carbon Filter Kits
The kits vary depending on the chassis size (small, medium, large). Each
kit contains three (3) filters.
WCFS – Carbon filter kit for small chassis models.
WCFM – Carbon filter kit for medium chassis models.
WCFL – Carbon filter kit for large chassis models.
FriedrichLink™
KWIFI - FriedrichLink™ Adaptor Accessory for wireless control and
additional programming options.
Window Installation Kits (Standard in Kühl
Models without Heat)
KWIKS – For all ES and YS models.
KWIKM – For all EM and YM models.
KWIKL – For all EL and YL models.
53
How to Check the Diagnostic Codes
Erasing the Diagnostic Codes
See codes chart on next page.
F
F
AUTO FAN
AUTO FAN
SET POINT
SET POINT
FAN
SPEED
TIMER
SCHEDULE
To check the active system errors, press the
&
keys for 3 sec.
Press and hold the
and
buttons simultaneously for 3 sec.
An “E” will appear in the display. Use the
or
keys to scroll through
The “E” will blink for 3 seconds.
any system errors. Only active errors will be shown. The display error
mode will time out in 15 seconds with no key activity.
F
AUTO FAN
SET POINT
ON
After the “E” blinks for 3 seconds, the display returns to normal.
Press the
key to view the next error. Press the SELECT key to exit.
F
AUTO FAN
SET POINT
Normal display.
54
ERROR CODES AND ALARM STATUS
Error
Problem
Code
Control Board's Action
Continue to monitor for "OPEN" (Unstuck) switch. Do not process switch
ENSURE FRONT COVER DOES NOT DEPRESS BUTTONS
Front Panel Button Stuck For More
Than 20 Seconds
1
input.
Input Voltage Out of Specification (103
- 127 / 187 - 253)
Indoor Temperature Sensor is Open or Set temp to 75°F in COOLING or 68°F in HEATING. Unit continues to
2
3
4
Open all relays until voltage is back within specs. Resume operation
Shorted
operate
Indoor Coil Temperature Sensor is
Open or Shorted
Control Board sets temp to a default of 40°F. Override sensor. Unit
continues to operate.
Sets temp to 20°F. Override sensor. Continue operation. Use Elec Heat if
available for HEATING. If not available use HEAT PUMP if outdoor temp
allows.
Shut down for 5 min. Resume operation for 3 min. Continues to monitor. If
test fails 3 times, the unit operation is locked out. Unplug and replug to
reset.
Outdoor Coil Temperature Sensor is
Open or Shorted
5
6
Outdoor Coil > (greater than) 175 F
Indoor Coil < (less than) 30 F for 2
consecutive minutes
Unit Cycles > (grater than) 9 Times per
hour
Unit Cycles < (less than) 3 Times per
Hour
Turn compressor off. Run High Fan speed. When coil temp reachs 45°F
resume operation after lockout time.
7
8
9
Continue operation. Continue to monitor. Take no action. Log Only.
Continue operation. Continue to monitor. Take no action. Log Only.
Only used if Electric Heat is available. Run High Speed and Electric heat
until room temp reaches 46°F. Display "FRZ" during operation. Logged
Only
10 Room Freeze Protection
11 Not Applicable
Not Applicable
Shutdown heat pump and electric heater. Run high fan speed until temp is
100°F. Resume operation. Third occurance in 1 hour locks unit out.
12 Discharge Air > (greater than) 185 F
13 Not Applicable
Not Applicable
Discharge Air Temperature Sensor is Override Sensor. Set temp to 75°F. Continue to monitor. Set error code 14
14
Open or Shorted
ON.
If indoor coil temp < (Lesser than) ambient temp for 5 minutes. Unit uses
electric heat to satisfy heating demand. Unplug and replug to reset.
Ambient temp < (less than) 0°F and ambient temp > (greater than) 130°F.
Set error code 16 ON. When cleared return unit to normal.
15 Heat Pump/Reversing Valve Error
16 Temperature Beyond Operating Limits
Equipment Doesn't Meet Minimum
Configuration
17
Must have compressor enabled and at least 2 fan speeds
Not Applicable
Not Applicable
Not Applicable
Not Applicable
Not Applicable
Not Applicable
Not Applicable
18
19
20
21 Not Applicable
Outdoor Coil Temperature < 30 F for 2 Unit will use electric heat to satisfy heating demands until temp is greater
than 45°F.
22
23
consecutive Minutes
Unit must be a Heat Pump with electric heat.
Frost Protection (for Heat Pump Only Unit will run active defrost for up to 6 minutes when Heat Pump run time
Unit- YS10M10)
is greater than 60 minutes and outdoor coil temp is 26 F or less.
Not Applicable
24 Not Applicable
Key Sequence
Action
To Access Error Codes
Press the fan speed and
key for 3 seconds
Reset Error Codes & Error History Press
+ timer/schedule for 3 seconds
When you have entered the Error Codes section, an “E” will appear. Use the up
Only active error codes will display.
and down
keys to scroll through error codes.
55
Test Mode
This function is used to test the compressor operation. By turning it on,
it allows the service technician to bypass the compressor’s 3 minute
time delay.
F
AUTO FAN
SET POINT
TIMER
SCHEDULE
FAN
MODE
FAN
SPEED
Press the
,
,
&
buttons simultaneously for 3 seconds.
This will activate the test mode.
ON
The ON icon will appear for 5 seconds and the display will then revert to
the normal display. The test mode will time out after 1 hour. To cancel
test mode, unplug and replug the power cord.
F
AUTO FAN
SET POINT
Normal display.
56
THERMISTORS’ RESISTANCE VALUES
(This Table Applies to All Thermistors)
RESISTANCE
TEMP
RESISTENCE (K Ohms)
TOLERANCE %
F
MIN
210.889
178.952
151.591
128.434
108.886
92.411
78.541
66.866
57.039
48.763
41.786
35.896
34.832
33.803
32.808
31.846
30.916
30.016
29.144
28.319
27.486
26.697
23.116
20.071
17.474
15.253
13.351
13.004
12.668
12.341
12.024
11.716
11.418
11.128
10.846
10.574
10.308
10.051
9.800
9.550
9.306
9.070
8.841
8.618
8.402
8.192
7.987
7.789
7.596
7.409
7.227
7.050
6.878
6.711
6.548
6.390
6.237
6.087
5.942
5.800
5.663
5.529
4.912
CENTR
225.548
190.889
161.325
136.363
115.340
97.662
82.812
70.339
59.864
51.060
43.654
37.415
36.290
35.202
34.150
33.133
32.151
31.200
30.281
29.425
28.532
27.701
23.931
20.731
18.008
15.684
13.697
13.335
12.984
12.644
12.313
11.993
11.682
11.380
11.088
10.804
10.528
10.260
10.000
9.748
9.503
9.265
9.033
8.809
8.591
8.379
8.172
7.972
7.778
7.589
7.405
7.226
7.052
6.883
6.718
6.558
6.403
6.252
6.105
5.961
5.822
5.686
5.060
4.511
MAX
MIN
6.50
MAX
6.51
-25
-20
-15
-10
-5
240.224
202.825
171.059
144.292
121.794
102.912
87.083
73.812
62.688
53.357
45.523
38.934
37.747
36.601
35.492
34.421
33.386
32.385
31.418
30.534
29.579
28.704
24.745
21.391
18.542
16.115
14.043
13.666
13.301
12.947
12.603
12.269
11.946
11.633
11.329
11.034
10.748
10.469
10.200
9.945
9.699
9.459
9.226
9.000
8.780
8.566
8.358
8.155
7.959
7.768
7.583
7.402
7.226
7.055
6.889
6.727
6.569
6.417
6.268
6.122
5.981
5.844
5.208
4.651
6.25
6.03
5.81
5.60
5.38
5.16
4.94
4.72
4.50
4.28
4.06
4.02
3.97
3.93
3.89
3.84
3.80
3.75
3.76
3.67
3.62
3.40
3.18
2.96
2.75
2.53
2.48
2.44
2.39
2.35
2.31
2.26
2.22
2.18
2.13
2.09
2.04
2.00
2.03
2.07
2.10
2.13
2.17
2.20
2.23
2.27
2.30
2.33
2.37
2.40
2.43
2.47
2.50
2.53
2.57
2.60
2.63
2.67
2.70
2.73
2.77
2.93
3.10
3.27
3.43
6.25
6.03
5.81
5.60
5.38
5.16
4.94
4.72
4.50
4.28
4.06
4.02
3.97
3.93
3.89
3.84
3.80
3.75
3.77
3.67
3.62
3.40
3.18
2.96
2.75
2.53
2.48
2.44
2.39
2.35
2.31
2.26
2.22
2.18
2.13
2.09
2.04
2.00
2.03
2.07
2.10
2.13
2.17
2.20
2.23
2.27
2.30
2.33
2.37
2.40
2.43
2.47
2.50
2.53
2.57
2.60
2.63
2.67
2.70
2.73
2.77
2.93
3.10
3.27
3.43
0
5
10
15
20
25
30
31
32
33
34
35
36
37
38
39
40
45
50
55
60
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
105
110
115
120
4.371
3.898
3.482
4.030
3.606
4.161
3.730
57
ROOM AIR CONDITIONER UNIT PERFORMANCE TEST DATA SHEET
JOB NAME________________________________ TECHS NAME____________________________________
DATE: _______________ MODEL:_______________ SERIAL:________________
HOW IS ALL OF THE INSTALLATION?
GOOD BAD
YES
____
____
____
____
____
NO
____
____
____
____
____
IS A C HAS S IS S E AL G AS K E T INT ALLE D ?
IS THE FR E S H/E XAUS T AIR V E NT OP E N?
IS A FR IE DR IC H S LE E VE INS TAL LE D?
IS A FR IE DR IC H OUT DOOR G R IL LE INS T ALLE D?
IS MAINTE NANC E B E ING PE R FOR ME D?
If NO is checked use back of sheet for explanation
E LE C T R IC AL:
LINE VOLTAGE (STATIC)
START UP VOLTAGE
AMPERAGE DRAW
--------- VOLTS
-------- VOLTS
--------- AMPS (COOL)
--------- AMPS (HEAT)
AMPERAGE DRAW
C OMP R E S S OR
LOCKED ROTOR AMPS
RUNNING AMPERAGE DRAW
--------- AMPS
--------- AMPS
INDOOR TE MP E R AT UR E S :
INDOOR AMBIENT TEMPERATURE
RELATIVE HUMIDITY (RH) INDOOR
-------- F
-------- %
C OOL
---------- F --------- F
---------- F --------- F
HE AT
DISCHARGE AIR TEMPERATURE (INDOOR)
RETURN AIR TEMPERATURE (INDOOR)
OUTDOOR T E MPE R AT UR E :
OUTDOOR AMBIENT TEMPERATURE
RH OUTDOOR RELATIVE HUMIDITY
CONDENSER
--------- F
--------- %
DISCHARGE AIR TEMPERATURE (OUTDOOR)
INTAKE AIR TEMPERATURE (OUTDOOR)
--------- F ---------- F
--------- F ---------- F
APPLICATION USE ------------------------- ROOM (RESIDENTIAL OR COMMERCIAL)
COOLING OR HEATING AREA W ---------- X L ----------- X H ----------- = SQ/CU/FT ------------
T his is a general guide. pleas e c ons ult manual J or M.
This is a general guide.
Please consult manual J or M for exact load calculations.
1. If heavily shaded, reduce capacity by 10%.
2. If very sunny, add 10%.
3. Add 500 BTU/hr per person over 2 people.
4. Add 4,000 BTU/hr if area is a kitchen.
58
TROUBLESHOOTING TIPS
NOTE: To more accurately identify the problem, first check for current maintenance
alerts and their history.
Problem
Possible Cause
Possible Solution
Turn the unit to the on position and raise or
lower temperature setting (as appropriate) to
call for operation.
The unit is turned to the off position,
Plug into a properly grounded 3 prong
receptacle. See “Electrical Rating Tables” on
pg. 6 for the proper receptacle type for your
unit.
The LCDI power cord is unplugged.
Press and release RESET (listen for click;
Reset button latches and remains in) to resume
operation.
Unit does not operate.
The LCDI power cord has tripped
(Reset button has popped out).
Reset the circuit breaker, or replace the fuse as
applicable. If the problem continues, contact a
licensed electrician.
The circuit breaker has tripped or
the supply circuit fuse has blown.
There has been a local power
failure.
The unit will resume normal operation once
power has been restored.
Other appliances are being used on
the same circuit.
The unit requires a dedicated outlet circuit, not
shared with other appliances.
Do NOT use an extension cord with this or any
other air conditioner.
An extension cord is being used.
Unit Trips Circuit Breaker or
Blows Fuses.
Replace with a circuit breaker or time-delay
fuse of the proper rating. See “Electrical
Rating Tables” on pg. 6 for the proper circuit
breaker/fuse rating for your unit. If the problem
continues, contact a licensed electrician.
The circuit breaker or time-delay
fuse is not of the proper rating.
The LCDI power cord can trip
(Reset button pops out) due to
disturbances on your power supply
line.
Press and release RESET (listen for click;
Reset button latches and remains in) to resume
normal operation.
LCDI Power Cord Trips (Reset
Button Pops Out).
Once the problem has been determined and
corrected, press and release RESET (listen for
click; Reset button latches and remains in) to
resume normal operation.
Electrical overload, overheating, or
cord pinching can trip (Reset button
pops out) the LCDI power cord.
NOTE: A damaged power supply cord must be replaced with a new power supply cord
obtained from the product manufacturer and must not be repaired.
Ensure that the return and/or discharge air
The return/discharge air grille is
paths are not blocked by curtains, blinds,
blocked.
furniture, etc.
Windows or doors to the outside are
Ensure that all windows and doors are closed.
open.
The temperature is not set at a cool
enough/warm enough setting.
Adjust the Temperature control to a cooler or
warmer setting as necessary.
Unit Does Not Cool/Heat
On And Off Too Frequently.
remove obstruction.
The indoor coil or outdoor coil is
dirty or obstructed.
Clean the coils, (See Routine Maintenance), or
remove obstruction.
Be sure to use exhaust vent fans while cooking
or bathing and, if possible, try not to use heat
producing appliances during the hottest part of
the day.
There is excessive heat or moisture
(cooking, showers, etc.) in the room.
The temperature of the room you
are trying to cool is extremely hot.
Allow additional time for the air conditioner to
cool off a very hot room.
59
TROUBLESHOOTING TIPS (Continued)
Problem
Possible Cause
Possible Solution
Do not try to operate your air conditioner in the
cooling mode when the outside temperature
is below 60° F (16° C). The unit will not cool
properly, and the unit may be damaged.
The outside temperature is below
60° F (16° C).
Since the fan does not circulate the room
air continuously at this setting, the room air
does not mix as well and hot (or cold) spots
may result. Using the continuous fan setting
is recommended to obtain optimum comfort
levels.
The digital control is set to fan
cycling mode.
Unit Does Not Cool/Heat
On And Off Too Frequently
(continued).
Check the cooling capacity of your unit to
ensure it is properly sized for the room in which
it is installed. Room air conditioners are not
designed to cool multiple rooms.
cooling capacity to match the heat
gain of the room.
Check the heating capacity of your unit. Air
conditioners are sized to meet the cooling load,
and heater size is then selected to meet the
heating load. In extreme northern climates,
room air conditioners may not be able to be
used as a primary source of heat.
heating capacity to match the heat
loss of the room.
If there are heat producing appliances in use
in the room, or if the room is heavily occupied,
the unit will need to run longer to remove the
additional heat.
This may be due to an excessive
heat load in the room.
Be sure to use exhaust vent fans while cooking
or bathing and, if possible, try not to use heat
producing appliances during the hottest part of
the day.
It may also be due to an improperly
sized unit.
your new air conditioner may result in the
unit running longer than you feel it should.
This may be more apparent, if it replaced an
This may be normal for higher
Unit Runs Too Much.
compared to older models.
You may notice that the discharge
air temperature of your new air
conditioner may not seem as cold
as you may be accustomed to from
older units. This does not, however,
indicate a reduction in the cooling
capacity of the unit.
capacity rating (Btu/h) listed on the unit’s rating
60
COOLING ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS
Possible Solution
Problem
Possible Cause
Low voltage
Check voltage at compressor. 115V & 230V
units will operate at 10% voltage variance
Temperature not set cold enough or Set temperature to lower than ambient position.
room air thermistor inoperative
Test thermistor and replace if inoperative.
Compressor hums but cuts off on
overload
Hard start compressor. Direct test compressor.
If compressor starts, add starting components
Compressor
does not run
Open or shorted compressor
windings
Check for continuity & resistance
Open overload
Test overload protector & replace if inoperative
Test capacitor & replace if inoperative
Test for continuity in all positions. Replace if
inoperative switch or electronic board.
Refer to appropriate wiring diagrams to check
wiring. Correct as needed.
Open capacitor
Inoperative system button
Broken, loose or incorrect wiring
Possible Solution
Problem
Possible Cause
Inoperative system button
Broken, loose or incorrect wiring
Open capacitor
Test button & replace user interface if inoperative
Refer to applicable wiring diagram
Fan motor
Test capacitor & replace if inoperative
Replace user interface if inoperative
does not run
Fan speed button defective
Test fan motor & replace if inoperative (be sure
internal overload has had time to reset)
Inoperative fan motor
Problem
Possible Cause
Possible Solution
Undersized unit
Refer to industry standard sizing chart
Indoor ambient thermistor open
or shorted
See alarms and replace thermistor if needed.
Dirty filter
Clean as recommended in Owner’s Manual
Use pressure wash or biodegradable cleaning
agent to clean
Dirty or restricted condenser or
evaporator coil
Does not cool or
only cools slightly
Poor air circulation
Adjust discharge louvers. Use high fan speed
Close doors. Instruct customer on use of this
feature
Fresh air or exhaust air door open
Low capacity - undercharge
Check for leak & make repair
Check amperage draw against nameplate. If
not conclusive, make pressure test
Compressor not pumping properly
61
COOLING ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS
Problem
Possible Cause
Possible Solution
Replace fuse, reset breaker. If repeats, check
fuse or breaker size. Check for shorts in unit
wiring & components
Fuse blown or circuit tripped
Power cord not plugged in
Plug it in
System button in “OFF” position
Set correctly
Unit does not run
Inoperative system button or open
electronic control board
Test for continuity. Check alarms. Correct
as needed.
Loose or disconnected wiring
Check wiring & connections. Reconnect per
wiring diagram
control board or other components
Problem
Possible Cause
Possible Solution
Clean as recommended in Owner’s Manual
Check for dirty or obstructed coil. Use
pressure wash or biodegradable cleaning
agent to clean
Dirty filter
Restricted airflow
Inoperative thermistor
Short of refrigerant
Check alarms. Replace as necessary.
De-ice coil & check for leak
Evaporator coil
freezes up
Inoperative fan motor
Partially restricted capillary tube
Test fan motor & replace if inoperative
De-ice coil. Replace capillary tube.
Possible Solution
Problem
Possible Cause
Unit undersized. Test cooling performance &
replace with larger unit if needed. See sizing chart.
Check for partially iced coil & check
temperature split across coil
Excessive heat load
Restriction in line
Refrigerant leak
Compressor runs
continually & does
not cycle off
Find leak and repair.
Check operation of t-stat. Replace if contacts
remain closed.
Compressor relay contacts stuck
Remote wall T-stat incorrectly wired Refer to appropriate wiring diagram
Thermistor shorted
Replace thermistor or electronic control board
Problem
Possible Cause
Possible Solution
Compressor relay contacts stuck
Temperature set at coldest point
Incorrect wiring
Replace electronic control board
Turn to higher temp. setting to see if unit
cycles off. If not, replace control board.
Electronic control
board does not
turn unit off
Refer to appropriate wiring diagrams
Refer to industry standard sizing chart
Replace thermistor or electronic control board
Unit undersized for area to be
cooled
Defective thermistor
62
COOLING ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS
Problem
Possible Cause
Overload inoperative. Opens too
soon
Possible Solution
Check operation of unit. Replace overload if
system operation is satisfactory
Compressor restarted before
system pressures equalized
Control’s default of 3 minutes wait delay timer
inoperative. Replace board.
Check voltage with unit operating. Check for
other appliances on circuit. Air conditioner
should be in a dedicated circuit for proper
voltage & fused separately
Compressor runs
for short periods
only. Cycles on
overload
Low or fluctuating voltage
Incorrect wiring
Refer to appropriate wiring diagram
Shorted or incorrect capacitor
Test capacitor and replace if needed.
Restricted or low air flow through
condenser coil or evaporator coil
Check for proper fan speed or blocked
coils. Correct as needed.
Check for kinked discharge line or restricted
Compressor running abnormally
hot
condenser. Refrigerant overcharge. Check
amperage, connections.
Problem
Possible Cause
Possible Solution
Check power supply. Check LCDI plug. Check
wire connections. Check if panel is locked.
No power
Unit does not
turn on
Incorrect wiring
Refer to appropriate wiring diagram
Defective thermistor
Replace thermistor or electronic control board
Problem
Possible Cause
Poorly installed
Possible Solution
Refer to Installation Manual for proper
installation
Fan blade striking chassis
Reposition - adjust motor mount
Check that compressor grommets have not
deteriorated. Check that compressor mounting
parts are not missing
Noisy operation
Compressor vibrating
Improperly mounted or loose
cabinet parts refrigerant tubes
Check assembly & parts for looseness,
rubbing & rattling pipes, etc.
Problem
Possible Cause
Possible Solution
Evaporator drain pan overflowing
Clean obstructed drain trough
Evaporator drain pan broken or cracked.
Reseal or replace. No chassis gasket installed.
Install chassis gasket
Condensation forming underneath
base pan
Poor installation resulting in rain
entering the room
Check installation instructions. Reseal as
required
Water leaks into
the room
Dirty evaporator coil. Use pressure wash
or biodegradable cleaning agent to clean.
Environmental phenomena: point supply
louvers upward. Put on high fan.
Condensation on discharge grille
louvers
Chassis gasket not installed
Downward slope of unit is too
steep inward
Install gasket, per Installation manual
Refer to installation manual for proper
installation
63
COOLING ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS
Problem
Possible Cause
Sublimation:
Possible Solution
Ensure that foam gaskets are installed in
between window panes & in between the
unit & the sleeve. Also, ensure that fresh
air/exhaust vents (on applicable models) are in
the closed position & are in tact
When unconditioned saturated,
outside air mixes with conditioned
air, condensation forms on the
cooler surfaces
Water “spitting”
into room
Follow installation instructions to ensure that
downward pitch of installed unit is no less than
1/4” & no more than 3/8”
Downward pitch of installation is
too steep towards back of unit
Clean & advise customer of periodic cleaning
& maintenance needs of entire unit
Restricted coil or dirty filter
Problem
Possible Cause
Insufficient air circulation thru area
to be air conditioned
Possible Solution
Adjust louvers for best possible air circulation
Operate in “MoneySaver” position
Advise customer
Excessive
moisture
Oversized unit
Inadequate vapor barrier in building
structure, particularly floors
Problem
Possible Cause
Defective thermistor
Unit oversized
Possible Solution
Replace thermistor or electronic control board
See sizing chart. Correct as needed.
Unit
Chassis seal gasket not sealing or
absent causting unit to short cycle
Check gasket. Reposition or replace as
needed
short cycles
Clean & advise customer of periodic cleaning
& maintenance needs of entire unit
Restricted coil or dirty filter
Problem
Possible Cause
Possible Solution
Defective indoor ambient thermistor
or electronic control board
Check alarms. Replace thermistor or electronic
control board
Prolonged off
cycles
Defective remote wall t-stat
Replace t-stat
Problem
Possible Cause
Evaporator drain pan cracked or
obstructed
Possible Solution
Repair, clean or replace as required
Detach shroud from pan & coil. Clean &
remove old sealer. Reseal, reinstall & check
Use pressure wash or biodegradable cleaning
agent to clean
Water in compressor area
Obstructed condenser coil
Outside water
leaks
Fan blade/slinger ring improperly
positioned
Adjust fan blade to 1/2” of condenser coil fin
pack
64
HEAT / COOL ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS
Problem
Possible Cause
Possible Solution
Bad indoor ambient thermistor
Check error codes. Replace as needed.
Room temperature
uneven
(Heating cycle)
Fan speed too low
Set at higher fan speed.
Close doors, windows, etc.
Enable ATSF
Opened door, windows, etc.
ATSF (room air sampling feature) disabled
Problem
Possible Cause
Possible Solution
Bad outdoor coil thermistor
Replace thermistor.
Unit will not defrost
• On heat pumps with electric heat: no action needed
• On model YS10N10: do not operate below 37°F/ 0°C
(Heat pump
only models)
• If outdoor air temp is higher than freezing, check
reversing valve, electric coil, outdoor thermistor,
refrigerant circuits, etc.
Temperature below 32°F/ 0°C
• For proper operation: correct as needed
Problem
Possible Cause
Exhaust or fresh air door open
Dirty filter
Possible Solution
Check if operating properly. Instruct customer on
proper use of control
Clean as recommended in Owner's Manual
Check heat rise across coil. If unit operates
efficiently, check if insulation can be added
to attic or walls. If insulation is adequate,
recommend additional unit or larger one
Unit undersized
Does not heat
adequately
Outdoor coil thermistor or electronic control
board defective
Check alarms (error codes). Replace thermistor
or electronic control board.
Check for adequate fan air across heater. Check
for open hi-limit control.
Heater hi-limit control cycling on & off
Shorted or open supplementary heater
Incorrect wiring
Do ohmmeter check.
Check applicable wiring diagram
65
HEAT PUMP ROOM AIR CONDITIONERS: TROUBLE SHOOTING TIPS
Problem
Possible Cause
Incorrect wiring
Action
Refer to applicable wiring diagram
Check for continuity of coil
Defective solenoid coil
Reversing valve fails to shift
Inoperative system switch
Possible Cause
Block condenser coil & switch unit to cooling.
Allow pressure to build up in system, then
switch to heating. If valve fails to shift, replace
valve.
Unit cools when
heat is called for
Check for continuity of system switch
Problem
Action
Heating capillary tube partially
restricted
Check for partially starved outer coil. Replace
heating capillary tube
Switch unit several times from heating to
cooling. Check temperature rise across
coil. Refer to specification sheet for correct
temperature rise
Cooling adequate,
but heating
Check valve leaking internally
insufficient
Denergize solenoid coil, raise head pressure,
energize solenoid to break loose. If valve fails
to make complete shift, replace valve.
Reversing valve failing to shift
completely; bypassing hot gas
TROUBLESHOOTING CHART - HEAT PUMP
REFRIGERANT SYSTEM DIAGNOSIS - COOLING CYCLE
LOW SUCTION PRESSURE
HIGH SUCTION PRESSURE
LOW HEAD PRESSURE
HIGH HEAD PRESSURE
Low Load Conditions
High Load Conditions
Low Load Conditions
High Load Conditions
Low Air Flow Across
Indoor Coil
High Air Flow Across
Indoor Coil
Refrigerant System
Restriction
Low Air Flow Across
Outdoor Coil
Refrigerant System
Restriction
Reversing Valve not
Fully Seated
Reversing Valve not
Fully Seated
Overcharged
Undercharged
Overcharged
Undercharged
in System
Noncondensables (air)
Moisture in System
Defective Compressor
Defective Compressor
66
HEAT PUMP ROOM AIR CONDITIONERS: TROUBLE SHOOTING TIPS
REFRIGERANT SYSTEM DIAGNOSIS - HEATING CYCLE
HIGH SUCTION PRESSURE
HIGH HEAD PRESSURE
LOW SUCTION PRESSURE
LOW HEAD PRESSURE
Low Airflow
Across Outdoor Coil
Outdoor Ambient Too High
for Operation in Heating
Refrigerant System
Restriction
Outdoor Ambient Too High
For Operation In Heating
Refrigerant System
Restriction
Reversing Valve not
Fully Seated
Reversing Valve not
Fully Seated
Low Airflow Across
Indoor Coil
Undercharged
Overcharged
Undercharged
Overcharged
Noncondensables (air)
in System
Moisture in System
Defective Compressor
Defective Compressor
ELECTRICAL TROUBLESHOOTING CHART - HEAT PUMP
HEAT PUMP
SYSTEM COOLS WHEN
HEATING IS DESIRED.
Is the Selector Switch
Set for Heat?
Is Line Voltage
Present at the Solenoid
YES
NO
NO
Is the Solenoid Coil Good?
Replace the Solenoid Coil
YES
Reversing Valve Stuck
Replace the Reversing Valve
67
TROUBLESHOOTING TOUCH TEST CHART: TO SERVICE REVERSING VALVES
NORMAL FUNCTION OF VALVE
NOTES:
VALVE
OPERATING
CONDITION
* TEMPERATURE OF VALVE BODY
** WARMER THAN VALVE BODY
1
2
3
4
5
6
POSSIBLE CAUSES
CORRECTIONS
Cool
as (2)
Hot
as (1)
Hot
Cool
*TVB
TVB
Normal Cooling
Normal Heating
Hot
as (1)
Cool
as (2)
Hot
Cool
*TVB
TVB
MALFUNCTION OF VALVE
No voltage to coil.
Repair electrical circuit.
Check Electrical circuit and coil
Check refrigeration charge
Defective coil.
Replace coil.
Low charge.
Repair leak, recharge system.
Recheck system.
Pressure differential too high.
Deenergize solenoid, raise head pressure,
reenergize solenoid to break dirt loose.
If unsuccessful, remove valve, wash
out. Check on air before installing. If no
movement, replace valve, add strainer to
discharge tube, mount valve horizontally.
Valve will not
shift from cool
to heat.
Cool,
as (2)
Hot,
as (1)
Hot
Cool
*TVB
Hot
Pilot valve okay. Dirt in one bleeder hole.
Stop unit. After pressures equalize, restart
with solenoid energized. If valve shifts,
reattempt with compressor running. If still
no shift, replace valve.
Piston cup leak
Cool,
as (2)
Hot,
as (1)
Raise head pressure, operate solenoid to
free. If still no shift, replace valve.
Hot
Hot
Cool
Cool
*TVB
Hot
*TVB
Hot
Clogged pilot tubes.
Raise head pressure, operate solenoid
to free
partially clogged port. If still no shift,
replace
valve.
Valve will not
shift from cool
to heat.
Cool,
as (2)
Hot,
as (1)
Both ports of pilot open. (Back seat port
did not close).
Cool,
as (2)
Hot,
as (1)
Warm
Hot
Cool
*TVB
*TVB
Warm
Hot
Defective Compressor.
Replace compressor
Not enough pressure differential at start
of stroke or not enough fl ow to maintain and charge. Raise head pressure. If no
Check unit for correct operating pressures
Warm
Warm
Hot
pressure differential.
shift, use valve with smaller port.
Body damage.
Replace valve
Starts to shift
but does not
complete
Raise head pressure, operate solenoid. If
no shift, use valve with smaller ports.
Hot
Hot
Warm
Hot
Warm
Hot
Hot
Hot
Hot
Hot
Hot
Both ports of pilot open.
Body damage.
*TVB
Replace valve
Valve hung up at mid-stroke. Pumping
volume of compressor not suffi cient to
maintain reversal.
reversal.
Raise head pressure, operate solenoid. If
no shift, use valve with smaller ports.
Raise head pressure, operate solenoid.
Hot
Hot
Hot
Hot
Hot
Hot
Both ports of pilot open.
If no
shift, replace valve.
Hot,
as (1)
Cool,
as (2)
Operate valve several times, then recheck.
If excessive leak, replace valve.
Apparent
leap in heat-
ing.
Hot
Hot
Hot
Cool
Cool
Cool
*TVB
**WVB
*TVB
*TVB
**WVB
*TVB
Piston needle on end of slide leaking.
Pilot needle and piston needle leaking.
Pressure differential too high.
Clogged pilot tube.
Hot,
as (1)
Cool,
as (2)
Operate valve several times, then recheck.
If excessive leak, replace valve.
Hot,
as (1)
Cool,
as (2)
Stop unit. Will reverse during equalization
period. Recheck system
Raise head pressure, operate solenoid to
free dirt. If still no shift, replace valve.
Raise head pressure, operate solenoid.
Remove valve and wash out. Check on air
before reinstalling, if no movement, replace
valve. Add strainer to discharge tube.
Mount valve horizontally.
Hot,
as (1)
Cool,
as (2)
Hot
Hot
Cool
Cool
Hot
Hot
*TVB
*TVB
Dirt in bleeder hole.
Piston cup leak.
Will not shift
from heat to
cool.
Stop unit. After pressures equalize, restart
with solenoid deenergized. If valve shifts,
reattempt with compressor running. If it
still will not reverse while running, replace
the valve.
Hot,
as (1)
Cool,
as (2)
1
Hot,
as (1)
Cool,
as (2)
Hot
Cool
Cool
Hot
Hot
Defective pilot.
Replace valve.
Warm,
as (1)
Cool,
as (2)
Warm
Warm
*TVB
Defective compressor.
Replace compressor
68
ELECTRONIC CONTROL BOARD COMPONENTS IDENTIFICATION
Outdoor Coil Thermistor
(Check here for
3.3 Volts DC)
(Blue)
Indoor Coil Thermistor
(Green)
Low Fan speed
Medium Fan speed
High Fan speed
Max Fan speed
(Heat+Cool units along with Cool models
SL28 and SL36 only have 3 fan speeds)
Indoor Ambient Air Thermistor
(Check here for 3.3 Volts DC)
Reversing Valve
Heater Relay
Transformer
User Interface Connector
Discharge Air Thermistor
(Check here for 3.3 Volts DC)
Heater Relay
115 or 230 VAC
Voltage Configuration
(See next page for details)
Compressor Relay
LN
Fuse
(6.3 Amps/250VAC)
L1
When checking the 3.3 Volts DC for the thermistors, if there is no voltage or wrong voltage, replace control board.
For thermistor testing, see page #57 for resistance values.
69
Kühl E-Control Service Kit
Configuration Instructions – Electronic Control Gen. 2
For Use with Kühl (cool only models) and Kühl + (cool and heat models) N models.
Example SS08N10-A
Notice: Please read these instructions completely before attempting configuration.
WARNING: Refer to the table below to determine the appropriate Electronic Control Kit part number by unit model
number prefix. Failure to install the correct Electronic Control Kit for the given unit model may result in failure of the
product and/or a potentially unsafe operating condition.
FRIEDRICH ELECTRONIC CONTROL KIT PART #
FRIEDRICH MODEL PREFIX
62601010
62601011
62601012
62601013
62601014
SS, SM
SL
YS*, YM, YL (*does not include YS10, see below)
ES, EM, EL
YS10N10
Contents:
•
•
•
•
•
•
Main Board
Indoor Air Sensor
Indoor Coil Sensor
Outdoor Coil Sensor
Discharge Air Sensor
Instruction Sheet
115V Configuration
230V Configuration
Procedure:
You must first confirm and set the voltage of the electronic control to match
your air conditioner.
Please perform the steps listed below before installation:
Step 1. Identify unit operating voltage from unit nameplate label.
Step 2. Set voltage selection on the electronic control by connecting the
jumper wire(s) to match the voltage listed on the unit nameplate label.
Step 3. Consult service manual for electronic control replacement
instructions and safety information.
70
Kϋhl Electronic Control
COOL ONLY Models
SS08N10-A, SS10N10-A, SS10N10-B, SS12N10-A, SS14N10-A, SS14N10A-A,
SM15N10-A, SS12N30-A, SS15N30-A, SM18M30-A, SM21N30-A, SM24N30-A
-F-
-F-
-F-
RED
ORANGE
BLUE
ELECTRONIC CONTROL
BLACK
Make sure you have the
correct voltage configuration
for your unit (See page 70).
BLACK
POWER SUPPLY
230/208/115VAC
BLACK
WHITE
WHITE
WHITE
c
RED
TO CAPACITOR
BRACKET
BROWN
BLUE
FAN
MOTOR
TO CHASSIS
SCHEMATIC
(115 V)
NEUTRAL
USER INTERF
ACE
MAX
L2 (230/208 V)
4
F4
R
HIGH
3
F3
F2
OLP
FAN MTR
MEDIUM
LOW
FAN
COM
2
S
1
CAP
F1
L2 OR N
COMP
R
OLP
COMPRESSOR
C
COMPRESSOR
5
L1
HERM
S
COM
CAP
L E G E N D
T
CAP - CAPACITOR
COMPR - COMPRESSOR
- THERMISTER
- COMBINATION TERMINAL
- GROUNDED LEAD SYMBOL
- INSULATOR
MTR
OLP
UI
- FAN MOTOR
- OVERLOAD PROTECTOR
- USER INTERFACE
- THERMAL FUSE
TF
HTR
- HEATER ELEMENT
HL
- HEATER LIMIT FUSE
PART NO.
92170019
REV.
01
71
Kϋhl Electronic Control
COOL ONLY Models
SL22N30-A, SL24N30-A, SL24N30-B
-F-
-F-
-F-
RED
BLUE
BLACK
ELECTRONIC CONTROL
BLACK
POWER SUPPLY
230/208/115VAC
BLACK
WHITE
WHITE
WHITE
c
RED
TO CAPACITOR
BRACKET
BROWN
BLUE
FAN
MOTOR
TO CHASSIS
SCHEMATIC
(115 V)
NEUTRAL
USER INTERF
ACE
MAX
L2 (230/208 V)
4
F4
R
FAN MTR
HIGH
3
2
F3
F2
OLP
MEDIUM
LOW
FAN
COM
S
1
CAP
F1
L2 OR N
R
OLP
C
COMPRESSOR
HERM
S
COM
COMP
L1
5
CAP
L E G E N D
- REVERSING VALVE
- THERMISTER
CAP - CAPACITOR
COMPR - COMPRESSOR
T
MTR
OLP
UI
- FAN MOTOR
- OVERLOAD PROTECTOR
- USER INTERFACE
- THERMAL FUSE
- COMBINATION TERMINAL
- GROUNDED LEAD SYMBOL
- INSULATOR
TF
HL
- HEATER LIMIT FUSE
HTR
- HEATER ELEMENT
PART NO.
92170021
REV.
01
72
Kϋhl Electronic Control
COOL ONLY Models
SL28N30-A, SL28N30-B, SL28N30-C
-F-
-F-
-F-
RED
BLUE
BLACK
ELECTRONIC CONTROL
BLACK
BLACK
WHITE
BLUE
SSR
POWER SUPPLY
230/208/115VAC
BLACK
WHITE
WHITE
WHITE
c
RED
TO CAPACITOR
BRACKET
BROWN
BLUE
FAN
MOTOR
TO CHASSIS
SCHEMATIC
(115 V)
NEUTRAL
USER INTERF
ACE
MAX
L2 (230/208 V)
4
F4
R
HIGH
3
2
F3
F2
OLP
FAN MTR
MEDIUM
LOW
FAN
COM
S
1
CAP
F1
L2 OR N
SSR
R
OLP
1
3
2
4
C
COMPRESSOR
HERM
S
COM
COMP
L1
5
CAP
L E G E N D
- REVERSING VALVE
- THERMISTER
CAP - CAPACITOR
COMPR - COMPRESSOR
T
MTR
OLP
UI
- FAN MOTOR
- OVERLOAD PROTECTOR
- USER INTERFACE
- THERMAL FUSE
- COMBINATION TERMINAL
- GROUNDED LEAD SYMBOL
- INSULATOR
TF
HL
- HEATER LIMIT FUSE
HTR
- HEATER ELEMENT
SSR
- SOLID STATE RELAY
PART NO.
92170013
REV.
01
73
Kϋhl Electronic Control
COOL ONLY Models
SL36N30-A
-F-
-F-
-F-
RED
BLUE
BLACK
ELECTRONIC CONTROL
INDOOR AMBIENT THERMISTOR
DISCHARGE AIR
THERMISTOR
VOLTAGE SELECTOR JUMPER WIRE
BLACK
WHITE
BLUE
SSR
BLACK
POWER SUPPLY
230/208/115VAC
L1
BLACK
WHITE
WHITE
WHITE
L2
c
RED
TO CAPACITOR
BRACKET
BROWN
BLUE
FAN
MOTOR
TO CHASSIS
SCHEMATIC
(115 V)
NEUTRAL
USER INTERF
ACE
MAX
L2 (230/208 V)
4
F4
R
HIGH
3
F3
F2
OLP
FAN MTR
MEDIUM
LOW
FAN
COM
2
S
1
CAP
F1
L2 OR N
COMP
SSR
R
OLP
1
3
2
4
C
COMPRESSOR
HERM
S
COM
L1
5
CAP
PTCR
L E G E N D
- REVERSING VALVE
- THERMISTER
CAP
- CAPACITOR
T
COMPR - COMPRESSOR
MTR
OLP
UI
- FAN MOTOR
- COMBINATION TERMINAL
- GROUNDED LEAD SYMBOL
- INSULATOR
- OVERLOAD PROTECTOR
- USER INTERFACE
- THERMAL FUSE
TF
HL
- HEATER LIMIT FUSE
HTR
- HEATER ELEMENT
PART NO.
92170018
REV.
01
74
Kϋhl Electronic Control
COOL with ELECTRIC HEAT Models
ES12N33-A, ES15N33-A, EM18N34-A, EM24M34-A
WIRING DIAGRAM
-F-
-F-
-F-
F1
RELAY
RED
F2
RELAY
BLUE
BLACK
F3
RELAY
ELECTRONIC CONTROL
F4
RELAY
RV
RELAY
HEATER
ORANGE
RED
EH1
RELAY
EH2
RELAY
J18
COMP
RELAY
LINE_L5
LINE_N2
POWER SUPPLY
230/208/115VAC
LINE_L3
BLACK
WHITE
WHITE
c
RED
TO CAPACITOR
BRACKET
BROWN
BLUE
FAN
MOTOR
TO CHASSIS
SCHEMATIC
(115 V)
NEUTRAL
USER INTERF
ACE
LOW
MED
HIGH
L2 (230/208 V)
4
F1
R
FAN MTR
3
2
F2
F3
OLP
FAN
COM
ELECTRIC HEAT
S
1
7
CAP
HL
EH1
EH2
TF
HTR
ELECTRIC HEAT
L2 OR N
COMP
R
OLP
C
COMPRESSOR
5
L1
HERM
S
COM
CAP
L E G E N D
- REVERSING VALVE
- THERMISTER
CAP - CAPACITOR
COMPR - COMPRESSOR
T
MTR
OLP
UI
- FAN MOTOR
- OVERLOAD PROTECTOR
- USER INTERFACE
- THERMAL FUSE
- COMBINATION TERMINAL
- GROUNDED LEAD SYMBOL
- INSULATOR
TF
HL
- HEATER LIMIT FUSE
HTR
- HEATER ELEMENT
PART NO.
92170014
REV.
01
75
Kϋhl Electronic Control
COOL WITH ELECTRIC HEAT Models
EL36N35-A
WIRING DIAGRAM
-F-
-F-
-F-
F1
RELAY
RED
F2
RELAY
BLUE
BLACK
F3
RELAY
ELECTRONIC CONTROL
F4
RELAY
RV
RELAY
HEATER
ORANGE
RED
EH1
RELAY
EH2
RELAY
BLACK
BLACK
WHITE
BLUE
J18
SSR
COMP
RELAY
PTCR
LINE_L5
LINE_N2
POWER SUPPLY
230/208/115VAC
LINE_L3
BLACK
WHITE
WHITE
c
RED
TO CAPACITOR
BRACKET
BROWN
BLUE
FAN
MOTOR
TO CHASSIS
SCHEMATIC
(115 V)
NEUTRAL
USER INTERF
ACE
LOW
MED
HIGH
L2 (230/208 V)
4
F1
R
FAN MTR
3
2
F2
F3
OLP
FAN
COM
ELECTRIC HEAT
S
1
7
CAP
HL
EH1
EH2
TF
HTR
ELECTRIC HEAT
L2 OR N
COMP
SSR
R
OLP
1
3
2
4
C
COMPRESSOR
5
HERM
S
COM
L1
CAP
PTCR
L E G E N D
- REVERSING VALVE
- THERMISTER
CAP
- CAPACITOR
T
COMPR - COMPRESSOR
MTR
OLP
UI
- FAN MOTOR
- COMBINATION TERMINAL
- GROUNDED LEAD SYMBOL
- INSULATOR
- OVERLOAD PROTECTOR
- USER INTERFACE
- THERMAL FUSE
TF
HL
- HEATER LIMIT FUSE
HTR
- HEATER ELEMENT
PART NO.
92170020
REV.
01
76
Kϋhl Electronic Control
HEAT PUMP without ELECTRIC HEAT
YS10N10-A
-F-
-F-
-F-
F1
RELAY
ORANGE
BLUE
F2
RELAY
BLACK
F3
RELAY
ELECTRONIC CONTROL
F4
RELAY
RV
RELAY
EH1
RELAY
EH2
RELAY
J18
BLACK
COMP
RELAY
LINE_L5
LINE_N2
POWER SUPPLY
230/208/115VAC
LINE_L3
BLACK
WHITE
WHITE
WHITE
c
RED
TO CAPACITOR
BRACKET
BROWN
BLUE
FAN
MOTOR
TO CHASSIS
SCHEMATIC
(115 V)
NEUTRAL
USER INTERF
ACE
MAX
L2 (230/208 V)
4
F4
R
FAN MTR
HIGH
3
2
F3
F2
OLP
MEDIUM
LOW
FAN
COM
S
1
6
CAP
F1
RV
REVERSE CYCLE
HP
L2 OR N
COMP
R
OLP
COMPRESSOR
C
COMPRESSOR
5
L1
HERM
S
COM
CAP
L E G E N D
- REVERSING VALVE
- THERMISTER
T
CAP - CAPACITOR
COMPR - COMPRESSOR
- COMBINATION TERMINAL
- GROUNDED LEAD SYMBOL
- INSULATOR
MTR
OLP
UI
- FAN MOTOR
- OVERLOAD PROTECTOR
- USER INTERFACE
- THERMAL FUSE
TF
HTR
- HEATER ELEMENT
HL
- HEATER LIMIT FUSE
PART NO.
92170015
REV.
01
77
Kϋhl Electronic Control
HEAT PUMP models
YS12N33-A, YM18M34-A
-F-
-F-
-F-
F1
RELAY
ORANGE
BLUE
F2
RELAY
BLACK
F3
RELAY
ELECTRONIC CONTROL
F4
RELAY
RV
RELAY
HEATER
ORANGE
RED
EH1
RELAY
EH2
RELAY
J18
BLACK
COMP
RELAY
LINE_L5
LINE_N2
POWER SUPPLY
230/208/115VAC
LINE_L3
BLACK
WHITE
WHITE
WHITE
c
RED
TO CAPACITOR
BRACKET
BROWN
BLUE
FAN
MOTOR
TO CHASSIS
SCHEMATIC
(115 V)
NEUTRAL
USER INTERF
ACE
LOW
L2 (230/208 V)
4
F4
R
FAN MTR
MEDIUM
3
2
F3
F2
OLP
HIGH
FAN
COM
ELECTRIC HEAT
S
1
7
CAP
HL
EH1
EH2
TF
HTR
ELECTRIC HEAT
L2 OR N
RV
RV
REVERSING CYCLE
COMPRESSOR
R
8
OLP
C
COMPRESSOR
5
COMP
L1
HERM
S
COM
CAP
L E G E N D
- REVERSING VALVE
- THERMISTER
T
CAP - CAPACITOR
COMPR - COMPRESSOR
- COMBINATION TERMINAL
- GROUNDED LEAD SYMBOL
- INSULATOR
MTR
OLP
UI
- FAN MOTOR
- OVERLOAD PROTECTOR
- USER INTERFACE
- THERMAL FUSE
TF
HTR
- HEATER ELEMENT
HL
- HEATER LIMIT FUSE
PART NO.
92170016
REV.
01
78
Kϋhl Electronic Control
HEAT PUMP model
YL24N35-A
-F-
-F-
-F-
F1
RELAY
ORANGE
BLUE
F2
RELAY
BLACK
F3
RELAY
ELECTRONIC CONTROL
F4
RELAY
RV
RELAY
HEATER
ORANGE
RED
EH1
RELAY
EH2
RELAY
BLACK
WHITE
BLUE
J18
BLACK
SSR
COMP
RELAY
LINE_L5
LINE_N2
BLACK
POWER SUPPLY
230/208/115VAC
LINE_L3
BLACK
WHITE
WHITE
WHITE
c
RED
TO CAPACITOR
BRACKET
BROWN
BLUE
FAN
MOTOR
TO CHASSIS
SCHEMATIC
(115 V)
NEUTRAL
USER INTERF
ACE
LOW
L2 (230/208 V)
4
F4
R
FAN MTR
MEDIUM
3
2
F3
F2
OLP
HIGH
FAN
COM
ELECTRIC HEAT
S
1
7
CAP
HL
EH1
EH2
TF
HTR
ELECTRIC HEAT
L2 OR N
RV
RV
REVERSING CYCLE
R
8
OLP
SSR
C
COMPRESSOR
1
3
2
4
HERM
S
COM
5
L1
COMP
CAP
L E G E N D
- REVERSING VALVE
- THERMISTER
T
CAP - CAPACITOR
COMPR - COMPRESSOR
- COMBINATION TERMINAL
- GROUNDED LEAD SYMBOL
- INSULATOR
MTR
OLP
UI
- FAN MOTOR
- OVERLOAD PROTECTOR
- USER INTERFACE
- THERMAL FUSE
TF
HTR
- HEATER ELEMENT
HL
- HEATER LIMIT FUSE
PART NO.
92170017
REV.
01
79
Kühl Gen2 Remote Control
Replacement Remote Control Configuration Instructions
For Use with Kühl (cool only models) and Kühl + (cool & heat models), N models only.
Contents:
•
•
•
Remote Control with Holder
(2) AAA-batteries
Instruction Sheet
ATTENTION! – If the Remote Control Does not Control the Unit, You May
Need to Configure it. Follow the steps below to configure:
Please read instructions completely before attempting configuration of the Remote Control. Before
performing the steps below, please test the remote control with your Air Conditioning unit as it may
already configured for your unit model type.
Step 1. Point the Remote Control at the Air Conditioning Unit and press the Remote Control
POWER key once to illuminate the Air Conditioning Unit’s display.
Step 2. Once the display on the Air Conditioning Unit is illuminated, note the number shown in the
display. (See Figure 1)
Step 3. With the Remote Control display illuminated, press and hold the Remote Control
SCHEDULE and the FAN SPEED Keys simultaneously for approximately 6 seconds until
the Remote Control displays current configuration number message. (See Figure 2)
If the number displayed does not match what is shown on the Remote Control display, you
will need to change the Remote Control’s setting to match that of the Air Conditioning Unit.
Air Conditioner Message
Remote Control Message
Figure 1
Figure 2
80
Kühl Gen2 Remote Control
Step 4. Using the Remote Control Increase or Decrease Keys, match the configuration
number displayed on the Remote Control to the number shown on the Air Conditioning Unit
display (see examples below).
Air Conditioning Unit Display
Remote Control Display
Step 5. To save setting in Remote Control, press and hold the Remote Control SCHEDULE and
FAN SPEED Key simultaneously for approximately 6 seconds until the displayed
configuration number on the Remote Control flashes.
The Remote Control is now configured to work with the air conditioner.
81
Kühl User Interface Service Kit
Replacement Instructions
For Use with Kühl (cool only models) and Kühl + (cool and heat models)
ATTENTION! - Please read these instructions completely before attempting replacement.
Always unplug the power supply from the power supply receptacle.
Contents:
•
•
•
•
User Interface (UI)
Ribbon Cable
2 – Mounting screws for UI
Instruction Sheet
Step 1. Disconnect ribbon cable by pulling straight out
Step 2. Remove 2 –mounting screws securing UI and disconnect ribbon cable
Step 3. Remove UI and ribbon cable from handle assembly
Step 4. Install new UI using the 2-screws, route new ribbon cable and reattach ribbon cable to UI
and Main control board
Step 5. Verify control operation
Ribbon cable connection
Mounting screws
82
PARTS SECTION
Kühl & Kühl+ Standard Chassis Unit Exploded Diagram
83
PARTS SECTION
Kühl & Kühl+ Standard Chassis Unit Exploded Diagram
84
Kühl & Kühl+ Small-Chassis 2012 Parts List
Item Part Number Part Description
ES12N33-A ES15N33-A SS08N10-A SS10N10-A SS12N10-A SS12N30-A SS14N10-A SS15N30-A YS10N10-A YS12N33-A
1
1
1
1
*
62050304 CONDENSOR COIL
1
61850343 CONDENSOR COIL
1
1
61850345 CONDENSOR COIL
1
1
1
1
61850344 CONDENSOR COIL
1
1
1
3
1
1
1
3
1
1
1
3
61818520 EXPANDED METAL GRILLE PAINTED SML
60169120 SCRIPT FRIEDRICH 2010 "FESTOON"
91002900 SPEEDNUT PUSH TYPE
61850126 EVAPORATOR COIL
61850129 EVAPORATOR COIL
61850128 EVAPORATOR COIL
61850127 EVAPORATOR COIL
61850131 EVAPORATOR COIL
61834800 STRAINER .312 COIL
61718107 COMPRESSOR KIT 62200118
61717176 COMPRESSOR KIT 62200501
61717127 COMPRESSOR KIT 62200109
61718104 COMPRESSOR KIT 62200420
61717126 COMPRESSOR KIT 62200115
61717116 COMPRESSOR KIT 62200103
61718114 COMPRESSOR KIT 62200419
3760500 CAPILLARY TUBE
1
1
3
1
1
3
1
1
3
1
1
3
1
1
3
1
1
3
1
1
1
3
*
*
2
2
2
2
2
*
1
1
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
1
1
1
1
2
1
3
3
3
3
3
3
3
*
1
1
1
1
1
1
1
1
1
*
3760520 CAPILLARY TUBE
1
1
*
3760513 CAPILLARY TUBE
1
*
3760511 CAPILLARY TUBE
*
3760451 CAPILLARY TUBE
1
*
3760547 CAPILLARY TUBE
1
*
3760543 CAPILLARY TUBE
1
1
*
3760555 CAPILLARY TUBE
*
3760479 CAPILLARY TUBE
1
1
1
4
5
6
6
6
6
7
7
7
7
7
7
7
*
25022022 REVERSING VALVE KIT + SOLENOID KIT
62601016 USER INTERFACE SERVICE KIT
62601013 ELECTRONIC CONTROL SERVICE KIT CL-EH 3SP GEN2
62601010 ELECTRONIC CONTROL SERVICE KIT COOL 4SP GEN2
62601012 ELECTRONIC CONTROL SERVICE KIT HP-EH 3SP GEN2
62601014 ELECTRONIC CONTROL SERVICE KIT HP 3SP GEN2
61080522 CAPACITOR
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
61080529 CAPACITOR
61080533 CAPACITOR
1
61080559 CAPACITOR
1
61080582 CAPACITOR
1
1
1
61080566 CAPACITOR
1
61080532 CAPACITOR
1
1
1
1
61820700 CAPACITOR STRAP 2.0 DIAMETER
61820702 CAPACITOR STRAP 2.5 DIAMETER
61820401 CAPACITOR MOUNTING BRACKET
25063505 COIL SOLENOID 115VAC
25063605 COIL SOLENOID 208/230VAC
61764583 OVERLOAD
1
1
1
1
1
1
1
1
1
1
1
1
1
*
1
1
1
1
1
1
8
8
9
1
9
61764585 OVERLOAD
1
1
9
61764586 OVERLOAD
1
1
9
61764589 OVERLOAD
1
9
61764594 OVERLOAD
1
1
9
61764601 OVERLOAD
1
9
61764606 OVERLOAD
1
10
11
11
12
12
12
13
14
14
15
16
61878610 HEATER 3.3 KW @ 230V
61871496 FAN MOTOR
1
1
1
1
1
1
1
1
1
1
1
61871497 FAN MOTOR
1
1
1
1
1
1
1
1
1
1
60500390 SUPPLY CORD 15A 125V
60500394 SUPPLY CORD 13A 250V
60500398 SUPPLY CORD 20A 250V
60179904 CONDENSATE DRAIN VALVE
60610603 BLOWER WHEEL
1
1
1
1
1
1
1
1
1
1
1
60610604 BLOWER WHEEL
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
61814905 SCROLL SML
1
1
1
1
1
1
1
1
1
1
60542003 FAN BLADE
85
Kühl & Kühl+ Small-Chassis 2012 Parts List
Item Part Number Part Description
ES12N33-A ES15N33-A SS08N10-A SS10N10-A SS12N10-A SS12N30-A SS14N10-A SS15N30-A YS10N10-A YS12N33-A
17
18
19
20
*
61803601 SHROUD, SML
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
61802500 MOUNT, FAN MOTOR
61907312 INNERWALL ASY SML
61821500 ASSY DOOR/SLIDE S/M/L
61814805 CONNECTOR FRESH AIR S/M
61817100 DECK SML/MED
21
*
61817000 INSUL L/S PANEL SML
61820200 AIRFOIL SM/MED/SH
61816701 INSUL TOP COVER S/M
61906700 COVER TOP S/M
22
23
24
25
26
27
28
29
29
29
29
30
31
32
*
61817300 BLOWER FR SML
61816900 INSUL INNERWALL SML
61807255 PANEL CONTROL SML
61802810 ASSY PARTITION SML
61803457 BASEPAN
61803459 BASEPAN
1
1
1
61803461 BASEPAN
1
1
1
61803462 BASEPAN
1
1
1
1
1
1
2
3
2
1
1
1
1
1
1
2
3
3
1
1
1
1
1
1
2
3
61803800 DRAINPAN SML/MED
62400127 AIR FILTER ASSEMBLY SML
62400134 TOOL MANIFOLD
1
1
1
1
1
2
3
3
3
1
1
1
1
1
2
3
3
1
1
1
1
1
2
3
3
1
1
1
1
1
2
3
2
3
1
1
1
1
1
2
3
3
3
1
1
1
1
1
2
3
5
1
1
1
1
1
2
3
2
60301802 CLIP MANIFOLD TOOL
62400124 ASSY UI HOLDER MOUNT SML/MED
61802600 BRACE SHROUD, S/M
91400402 COMPRESSOR STUD
61715800 COUNTER WEIGHT
33
34
35
35
36
36
36
37
38
39
40
41
42
43
44
45
46
47
48
*
61028900 COMPRESSOR GROMMET
61028901 COMPRESSOR GROMMET
61028903 COMPRESSOR GROMMET
61937200 PANEL L/S SML
3
3
3
3
3
3
3
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
61816800 INSUL L/S AIR DECK S/M
62400425 DECORATIVE FRONT SERVICE KIT SML
61819816 ANGLE WNGBRD SIDE PAINTED SML
61109514 BRKT SUPPORT ASSY PAINTED
61819715 ANGLE WINGBOARD TOP PAINTED SML/MED
60610305 WINDOW SEAL GASKET
61717302 CHASSIS GASKET SEAL
61808414 SILL PLATE PAINTED SML/MED
61825720 SHELL OUTER SML REPLMT 2010
60294416 WINGBOARD SML 2010
62601015 REMOTE CONTROL SERVICE KIT
61824405 CHECK VALVE
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
*
61883102 48 PAD ISOLATION 3X6
61818900 HEATER MOUNT BRACKET
61812900 SHIELD BOTTOM S/M 3R
61812901 SHIELD BOTTOM S/M 4R
61821800 SHEILD HEAT SMALL
61715800 COUNTER WEIGHT
*
1
1
1
1
1
*
*
1
1
*
1
1
1
1
*
1
1
1
1
*
60846016 ASSY PLSTC BAG W/WIK
60846017 ASSY PLSTC BAG W/O WIK
60073300 GASKET URETHANE FOAM
61819601 SHELL GUIDE S/M/L
1
1
1
1
1
*
1
1
*
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
*
2
1
1
2
1
1
2
1
1
2
1
1
*
61826400 CHASSIS RETAINER WIRE
62601019 THERMISTOR SENSOR KIT
*
86
Kühl & Kühl+ Medium-Chassis 2012 Parts List
Item Part Number Part Description
EM18N34-A EM24N34-A SM15N10-A SM18N30-A SM21N30-A SM24N30-A YM18N34-A
1
1
1
1
*
61850227 CONDENSOR COIL
1
61850140 CONDENSOR COIL
1
1
61850244 CONDENSOR COIL
1
1
1
61850141 CONDENSOR COIL
1
1
1
3
61818521 EXPANDED METAL GRILLE PAINTED MED
60169120 SCRIPT FRIEDRICH 2010 "FESTOON"
91002900 SPEEDNUT PUSH TYPE
61850108 EVAPORATOR COIL
1
1
3
1
1
3
1
1
3
1
1
3
1
1
1
3
1
1
3
*
*
2
2
2
2
2
*
62050030 EVAPORATOR COIL
1
62050034 EVAPORATOR COIL
1
1
1
1
1
1
61850130 EVAPORATOR COIL
1
1
1
1
1
1
62050040 EVAPORATOR COIL
1
1
61834800 STRAINER .312 COIL
61834801 STRAINER .375 COIL
61718111 COMPRESSOR KIT 62200311
61717131 COMPRESSOR KIT 62200108
61717118 COMPRESSOR KIT 62200105
61717119 COMPRESSOR KIT 62200106
61718105 COMPRESSOR KIT 62200121
3760500 CAPILLARY TUBE
1
1
1
1
*
3
3
3
3
3
*
1
1
3
1
1
*
3760520 CAPILLARY TUBE
*
3760513 CAPILLARY TUBE
2
*
3760545 CAPILLARY TUBE
3
3
*
3760451 CAPILLARY TUBE
2
1
1
4
5
6
6
6
7
7
7
7
7
*
25022032 REVERSING VALVE KIT + SOLENOID KIT
62601016 USER INTERFACE SERVICE KIT
62601013 ELECTRONIC CONTROL SERVICE KIT CL-EH 3SP GEN2
62601010 ELECTRONIC CONTROL SERVICE KIT COOL 4SP GEN2
62601012 ELECTRONIC CONTROL SERVICE KIT HP-EH 3SP GEN2
61080529 CAPACITOR
1
1
1
1
1
1
1
1
1
1
1
1
1
1
61080557 CAPACITOR
1
1
61080588 CAPACITOR
1
61080591 CAPACITOR
1
1
61080592 CAPACITOR
1
61820700 CAPACITOR STRAP 2.0 DIAMETER
61820702 CAPACITOR STRAP 2.5 DIAMETER
61820401 CAPACITOR MOUNTING BRACKET
25063605 COIL SOLENOID 208/230VAC
61764583 OVERLOAD
1
1
1
1
1
*
1
1
1
1
1
1
1
1
1
1
8
9
1
9
61764570 OVERLOAD
1
1
1
1
1
10
11
11
12
12
12
12
13
14
14
14
15
16
61878611 HEATER 4.0 KW @ 230V
61871495 FAN MOTOR
1
1
1
1
1
1
1
1
61871498 FAN MOTOR
1
1
60500390 SUPPLY CORD 15A 125V
60500394 SUPPLY CORD 13A 250V
60500398 SUPPLY CORD 20A 250V
60500399 SUPPLY CORD 30A 250V
60179904 CONDENSATE DRAIN VALVE
60610616 BLOWER WHEEL
1
1
1
1
1
1
1
1
1
1
60610617 BLOWER WHEEL
1
1
60610618 BLOWER WHEEL
1
1
1
1
1
1
61817505 SCROLL MED
1
1
1
1
1
1
1
1
1
1
60542004 FAN BLADE
87
Kühl & Kühl+ Medium-Chassis 2012 Parts List
Item Part Number Part Description
EM18N34-A EM24N34-A SM15N10-A SM18N30-A SM21N30-A SM24N30-A YM18N34-A
17
18
19
20
*
61804901 SHROUD, MED
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
61804100 MOUNT, FAN MOTOR
61907212 INNERWALL ASY MED
61821500 ASSY DOOR/SLIDE S/M/L
61814805 CONNECTOR FRESH AIR S/M
61817100 DECK SML/MED
21
*
61817001 INSUL L/S PANEL MED
61820200 AIRFOIL SM/MED/SH
22
23
24
25
26
27
28
29
29
30
31
32
*
61816701 INSUL TOP COVER S/M
61906700 COVER TOP S/M
61817400 BLOWER FR MED
61816901 INSUL INNERWALL MED
61807256 PANEL CONTROL MED
61804310 ASSY PARTITION MED
61803461 BASEPAN
61803462 BASEPAN
1
1
1
1
1
1
2
3
2
3
1
1
1
1
1
1
2
3
2
1
1
1
1
1
1
2
3
2
61803800 DRAINPAN SML/MED
62400210 AIR FILTER ASSEMBLY MED
62400134 TOOL MANIFOLD
1
1
1
1
1
2
3
3
1
1
1
1
1
2
3
2
3
1
1
1
1
1
2
3
2
3
1
1
1
1
1
2
3
2
60301802 CLIP MANIFOLD TOOL
62400124 ASSY UI HOLDER MOUNT SML/MED
61802600 BRACE SHROUD, S/M
91400402 COMPRESSOR STUD
61715800 COUNTER WEIGHT
33
34
35
35
36
36
37
38
39
40
41
42
43
44
45
46
47
48
*
61028900 COMPRESSOR GROMMET
61028901 COMPRESSOR GROMMET
61937100 PANEL L/S MED
3
1
1
1
3
1
1
1
2
2
1
1
1
1
1
1
1
3
1
1
1
2
2
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
61816800 INSUL L/S AIR DECK S/M
62400426 DECORATIVE FRONT SERVICE KIT MED
61819817 ANGLE WNGBRD SIDE PAINTED MED
61109514 BRKT SUPPORT ASSY PAINTED
61819715 ANGLE WINGBOARD TOP PAINTED SML/MED
60610305 WINDOW SEAL GASKET
61717302 CHASSIS GASKET SEAL
61808414 SILL PLATE PAINTED SML/MED
61825721 SHELL OUTER MED REPLMT 2010
60294421 WINGBOARD MED 2010
62601015 REMOTE CONTROL SERVICE KIT
61824405 CHECK VALVE
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
*
61883102 48 PAD ISOLATION 3X6
61818900 HEATER MOUNT BRACKET
61812900 SHIELD BOTTOM S/M 3R
61812901 SHIELD BOTTOM S/M 4R
61821801 SHIELD HEAT MED
*
1
1
*
*
1
1
1
*
1
1
1
1
*
61715800 COUNTER WEIGHT
1
1
1
1
*
60846016 ASSY PLSTC BAG W/WIK
60846017 ASSY PLSTC BAG W/O WIK
60073300 GASKET URETHANE FOAM
61819601 SHELL GUIDE S/M/L
1
1
*
1
*
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
*
2
1
1
2
1
1
2
1
1
*
61826400 CHASSIS RETAINER WIRE
62601019 THERMISTOR SENSOR KIT
*
88
Kühl & Kühl+ Large-Chassis 2012 Parts List
Item Part Number Part Description
EL25N35-A EL36N35-A SL22N30-A SL25N30-A SL28N30-A SL36N30-A YL24N35-A
1
1
1
*
61850238 CONDENSOR COIL
1
62050222 CONDENSOR COIL
1
1
1
1
1
61850246 CONDENSOR COIL
1
1
1
3
61818522 EXPANDED METAL GRILLE PAINTED LRG
60169120 SCRIPT FRIEDRICH 2010 "FESTOON"
91002900 SPEEDNUT PUSH TYPE
61896305 EVAPORATOR COIL
1
1
3
1
1
3
1
1
1
3
1
1
3
1
1
3
1
1
1
3
*
*
2
2
2
*
62050004 EVAPORATOR COIL
1
1
1
1
1
1
1
1
1
3
1
62050041 EVAPORATOR COIL
1
1
61834801 STRAINER .375 COIL
1
1
1
1
3
3
3
3
*
61717134 COMPRESSOR KIT 62200205
61717131 COMPRESSOR KIT 62200108
61718113 COMPRESSOR KIT 62200207
61717130 COMPRESSOR KIT 62200200
1390000 CAPILLARY TUBE
1
1
2
1
1
*
3760482 CAPILLARY TUBE
*
3760473 CAPILLARY TUBE
2
2
*
3760512 CAPILLARY TUBE
2
2
*
3760518 CAPILLARY TUBE
2
1
1
4
5
6
6
6
7
7
7
7
*
25022032 REVERSING VALVE KIT + SOLENOID KIT
62601016 USER INTERFACE SERVICE KIT
62601013 ELECTRONIC CONTROL SERVICE KIT CL-EH 3SP GEN2
62601011 ELECTRONIC CONTROL SERVICE KIT COOL 3SP GEN2
62601012 ELECTRONIC CONTROL SERVICE KIT HP-EH 3SP GEN2
61080589 CAPACITOR
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
61080588 CAPACITOR
1
61080520 CAPACITOR
1
61080514 CAPACITOR
1
1
61820700 CAPACITOR STRAP 2.0 DIAMETER
61820702 CAPACITOR STRAP 2.5 DIAMETER
61820401 CAPACITOR MOUNTING BRACKET
25063605 COIL SOLENOID 208/230VAC
61878612 HEATER 5.2 KW @ 230V
61871466 FAN MOTOR
1
1
1
1
1
1
*
1
1
1
1
1
1
1
1
1
1
1
1
8
10
11
11
12
12
12
13
14
14
14
14
15
16
17
18
19
20
*
1
1
1
61871467 FAN MOTOR
1
1
1
1
1
1
1
60500394 SUPPLY CORD 13A 250V
60500398 SUPPLY CORD 20A 250V
60500399 SUPPLY CORD 30A 250V
60179904 CONDENSATE DRAIN VALVE
60610617 BLOWER WHEEL
1
1
1
1
1
1
1
1
1
60610619 BLOWER WHEEL
1
1
60610620 BLOWER WHEEL
1
1
1
60610620 BLOWER WHEEL
1
1
1
1
1
1
1
1
61818100 SCROLL LRG
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
60542007 FAN BLADE
61807702 SHROUD, LRG
61806700 MOUNT, FAN MOTOR
61907111 INNERWALL ASY LRG
61821500 ASSY DOOR/SLIDE S/M/L
61814806 CONNECTOR FRESH AIR LRG
89
Kühl & Kühl+ Large-Chassis 2012 Parts List
Item Part Number Part Description
EL25N35-A EL36N35-A SL22N30-A SL25N30-A SL28N30-A SL36N30-A YL24N35-A
21
*
61818000 DECK LRG
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
61817600 INSUL L/S PANEL LRG
61820201 AIRFOIL LRG
22
23
24
25
26
27
28
29
29
29
29
30
31
32
*
61818201 INSUL, TOP COVER LRG
61906600 COVER TOP LRG
61817800 BLOWER FRONT LRG
61816902 INSUL INNERWALL LRG
61807257 PANEL CONTROL LRG
61807010 ASSY PARTITION LRG
61809515 BASEPAN
1
1
1
61809516 BASEPAN
1
61809517 BASEPAN
1
1
1
61809518 BASEPAN
1
1
1
1
1
1
2
3
2
3
1
1
1
1
1
1
2
3
61807400 DRAINPAN LRG
1
1
1
1
1
2
3
1
1
1
1
1
2
3
2
3
1
1
1
1
1
2
3
2
3
1
1
1
1
1
2
3
2
3
1
1
1
1
1
2
3
2
3
62400321 AIR FILTER ASSEMBLY LRG
62400134 TOOL MANIFOLD
60301802 CLIP MANIFOLD TOOL
62400318 ASSY UI HOLDERMOUNT LRG
61810000 BRACE SHROUD, LARGE
91400402 COMPRESSOR STUD
61715800 COUNTER WEIGHT
33
34
35
35
36
36
37
37
38
39
40
42
43
44
45
46
47
48
*
1150934 COMPRESSOR GROMMET
61028902 COMPRESSOR GROMMET
61937000 PANEL L/S LRG
3
3
1
1
1
1
61937002 PANEL L/S LRG PTCR
61818300 INSUL L/S AIR DECK LRG
62400427 DECORATIVE FRONT SERVICE KIT LRG
61819818 ANGLE WNGBRD SIDE PAINTED LRG
61819710 ASSY ANGLE WINGBOARD TOP LRG
60610305 WINDOW SEAL GASKET
61717302 CHASSIS GASKET SEAL
61808415 SILL PLATE PAINTED LRG
61825730 SHELL OUTER LRG REPLMT 2010
60294426 WINGBOARD LRG 2010
62601015 REMOTE CONTROL SERVICE KIT
61108801 SOLID STATE RELAY
61768203 BOX EXTERNAL RELAY
61883803 PTCR RESISTOR HARD START
61883804 PTCR MNTG CLIP PTCAUX36-520H RND
61824405 CHECK VALVE
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
*
*
*
*
1
1
*
61883102 48 PAD ISOLATION 3X6
61883101 48 PAD ISOLATION 2X4
61818900 HEATER MOUNT BRACKET
61813501 SHIELD BOTTOM LRG 4R
61821900 SHIELD HEAT LRG
*
1
1
1
1
*
1
1
1
1
1
1
1
1
1
*
*
*
60846016 ASSY PLSTC BAG W/WIK
60846017 ASSY PLSTC BAG W/O WIK
60073300 GASKET URETHANE FOAM
61819601 SHELL GUIDE S/M/L
1
1
*
1
1
1
*
1
4
1
1
1
4
1
1
1
4
1
1
1
4
1
1
*
4
1
1
4
1
1
4
1
1
*
61826400 CHASSIS RETAINER WIRE
62601019 THERMISTOR SENSOR KIT
*
90
Addendum 1
Schedule Table with Energy Saving Values
Pre Programmed Residential Schedule Option 1
Period
1
Sun
Start Time
System Mode
Fan Mode
Mon
600 Start Time
Cool System Mode
Auto Fan Mode
Low Fan Speed
Tues
600 Start Time
Cool System Mode
Auto Fan Mode
Low Fan Speed
Wed
600 Start Time
Cool System Mode
Auto Fan Mode
Low Fan Speed
Thur
600 Start Time
Cool System Mode
Auto Fan Mode
Low Fan Speed
Fri
Sat
600 Start Time
Cool System Mode
Auto Fan Mode
Low Fan Speed
600 Start Time
600
Cool
Auto
Low
Cool System Mode
Auto Fan Mode
Low Fan Speed
Fan Speed
Set Point Cool 78
Set Point Heat 70
Set Point Cool 78
Set Point Heat 70
800 Start Time
Set Point Cool 78
Set Point Heat 70
800 Start Time
Set Point Cool 78
Set Point Heat 70
800 Start Time
Set Point Cool 78
Set Point Heat 70
800 Start Time
Set Point Cool 78
Set Point Heat 70
800 Start Time
Set Point Cool 78
Set Point Heat 70
Start Time
System Mode
Fan Mode
800 Start Time
800
Cool System Mode
Auto Fan Mode
Low Fan Speed
Cool System Mode
Auto Fan Mode
Low Fan Speed
Cool System Mode
Auto Fan Mode
Low Fan Speed
Cool System Mode
Auto Fan Mode
Low Fan Speed
Cool System Mode
Auto Fan Mode
Low Fan Speed
Cool System Mode
Auto Fan Mode
Low Fan Speed
Cool
Auto
Low
2
3
4
Fan Speed
Set Point Cool 85
Set Point Heat 62
Set Point Cool 85
Set Point Heat 62
1800 Start Time
Set Point Cool 85
Set Point Heat 62
1800 Start Time
Set Point Cool 85
Set Point Heat 62
1800 Start Time
Set Point Cool 85
Set Point Heat 62
1800 Start Time
Set Point Cool 85
Set Point Heat 62
1800 Start Time
Set Point Cool 85
Set Point Heat 62
Start Time
System Mode
Fan Mode
1800 Start Time
1800
Cool
Auto
Low
Cool System Mode
Auto Fan Mode
Low Fan Speed
Cool System Mode
Auto Fan Mode
Low Fan Speed
Cool System Mode
Auto Fan Mode
Low Fan Speed
Cool System Mode
Auto Fan Mode
Low Fan Speed
Cool System Mode
Auto Fan Mode
Low Fan Speed
Cool System Mode
Auto Fan Mode
Low Fan Speed
Fan Speed
Set Point Cool 78
Set Point Heat 70
Set Point Cool 78
Set Point Heat 70
2200 Start Time
Set Point Cool 78
Set Point Heat 70
2200 Start Time
Set Point Cool 78
Set Point Heat 70
2200 Start Time
Set Point Cool 78
Set Point Heat 70
2200 Start Time
Set Point Cool 78
Set Point Heat 70
2200 Start Time
Set Point Cool 78
Set Point Heat 70
Start Time
System Mode
Fan Mode
2200 Start Time
2200
Cool
Auto
Low
Cool System Mode
Auto Fan Mode
Low Fan Speed
Cool System Mode
Auto Fan Mode
Low Fan Speed
Cool System Mode
Auto Fan Mode
Low Fan Speed
Cool System Mode
Auto Fan Mode
Low Fan Speed
Cool System Mode
Auto Fan Mode
Low Fan Speed
Cool System Mode
Auto Fan Mode
Low Fan Speed
Fan Speed
Set Point Cool 82
Set Point Heat 62
Set Point Cool 82
Set Point Heat 62
Set Point Cool 82
Set Point Heat 62
Set Point Cool 82
Set Point Heat 62
Set Point Cool 82
Set Point Heat 62
Set Point Cool 82
Set Point Heat 62
Set Point Cool 82
Set Point Heat 62
Pre Programmed Commercial Schedule Option 2
Period
1
Sun
Mon
700 Start Time
Cool System Mode
Auto Fan Mode
Med Fan Speed
Tues
700 Start Time
Cool System Mode
Auto Fan Mode
Med Fan Speed
Wed
700 Start Time
Cool System Mode
Auto Fan Mode
Med Fan Speed
Thur
700 Start Time
Cool System Mode
Auto Fan Mode
Med Fan Speed
Fri
Sat
Start Time
System Mode
Fan Mode
700 Start Time
700 Start Time
700
Cool System Mode
Auto Fan Mode
Med Fan Speed
Cool System Mode
Auto Fan Mode
Med Fan Speed
Cool
Auto
Med
Fan Speed
Set Point Cool 84
Set Point Heat 62
Set Point Cool 75
Set Point Heat 70
1800 Start Time
Set Point Cool 75
Set Point Heat 70
1800 Start Time
Set Point Cool 75
Set Point Heat 70
1800 Start Time
Set Point Cool 75
Set Point Heat 70
1800 Start Time
Set Point Cool 75
Set Point Heat 70
1800 Start Time
Set Point Cool 84
Set Point Heat 62
Start Time
System Mode
Fan Mode
1800 Start Time
1800
Cool
Auto
Med
Cool System Mode
Auto Fan Mode
Med Fan Speed
Cool System Mode
Auto Fan Mode
Med Fan Speed
Cool System Mode
Auto Fan Mode
Med Fan Speed
Cool System Mode
Auto Fan Mode
Med Fan Speed
Cool System Mode
Auto Fan Mode
Med Fan Speed
Cool System Mode
Auto Fan Mode
Med Fan Speed
2
Fan Speed
Set Point Cool 84
Set Point Heat 62
Set Point Cool 84
Set Point Heat 62
Set Point Cool 84
Set Point Heat 62
Set Point Cool 84
Set Point Heat 62
Set Point Cool 84
Set Point Heat 62
Set Point Cool 84
Set Point Heat 62
Set Point Cool 84
Set Point Heat 62
91
Friedrich Air Conditioning Company
10001 Reunion Place, Suite 500
San Antonio, TX 78216
800.541.6645
ROOM AIR CONDITIONERS
LIMITED WARRANTY
FIRST YEAR
ANY PART: If any part supplied by FRIEDRICH fails because of a defect in workmanship or material within twelve months from
date of original purchase, FRIEDRICH will repair the product at no charge, provided room air conditioner is reasonably accessible
for service. Any additional labor cost for removing inaccessible units and/or charges for mileage related to travel by a Service
Agency that exceeds 25 miles one way will be the responsibility of the owner. This remedy is expressly agreed to be the exclusive
remedy within twelve months from the date of the original purchase.
SECOND THROUGH FIFTH YEAR
SEALED REFRIGERANT SYSTEM: If the Sealed Refrigeration System (defined for this purpose as the compressor, condenser
coil, evaporator coil, reversing valve, check valve, capillary, filter drier, and all interconnecting tubing) supplied by FRIEDRICH in
your Room Air Conditioner fails because of a defect in workmanship or material within sixty months from date of purchase,
FRIEDRICH will pay a labor allowance and parts necessary to repair the Sealed Refrigeration System; PROVIDED FRIEDRICH will
not pay the cost of diagnosis of the problem, removal, freight charges, and transportation of the air conditioner to and from the
Service Agency, and the reinstallation charges associated with repair of the Sealed Refrigeration System. All such cost will be the
sole responsibility of the owner. This remedy is expressly agreed to be the exclusive remedy within sixty months from the date of the
original purchase.
APPLICABILITY AND LIMITATIONS: This warranty is applicable only to units retained within the Fifty States of the U.S.A., District
of Columbia, and Canada. This warranty is not applicable to:
1. Air filters, fuses, batteries and the front grille removal tool.
2. Products on which the model and serial numbers have been removed.
3. Products which have defects or damage which results from improper installation, wiring, electrical current
characteristics, or maintenance; or caused by accident, misuse or abuse, fire, flood, alterations and/or misapplication
of the product and/or units installed in a corrosive atmosphere, default or delay in performance caused by war,
government restrictions or restraints, strikes, material shortages beyond the control of FRIEDRICH, or acts of God.
OBTAINING WARRANTY PERFORMANCE: Service will be provided by the FRIEDRICH Authorized Dealer or Service
Organization in your area. They are listed in the Yellow Pages. If assistance is required in obtaining warranty performance, write
to: Room Air Conditioner Service Manager (the Friedrich address is at the top of this warranty) or email [email protected].
LIMITATIONS:
THIS WARRANTY IS GIVEN IN LIEU OF ALL OTHER WARRANTIES. Anything in the warranty
notwithstanding, ANY IMPLIED WARRANTIES OF FITNESS FOR PARTICULAR PURPOSE AND/OR MERCHANTABILITY
SHALL BE LIMITED TO THE DURATION OF THIS EXPRESS WARRANTY. MANUFACTURER EXPRESSLY DISCLAIMS AND
EXCLUDES ANY LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGE FOR BREACH OF ANY EXPRESSED OR
IMPLIED WARRANTY.
Performance of Friedrich’s Warranty obligation is limited to one of the following methods:
1. Repair of the unit
2. A refund to the customer for the prorated value of the unit based upon the remaining warranty period of the unit.
3. Providing a replacement unit of equal value
The method of fulfillment of the warranty obligation is at the sole discretion of Friedrich Air Conditioning.
NOTE: Some states do not allow limitations on how long an implied warranty lasts, or do not allow the limitation or exclusion of
consequential or incidental damages, so the foregoing exclusions and limitations may not apply to you.
OTHER: This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
PROOF OF PURCHASE: Owner must provide proof of purchase in order to receive any warranty related services.
All service calls for explaining the operation of this product will be the sole responsibility of the consumer.
All warranty service must be provided by an Authorized FRIEDRICH Service Agency, unless authorized by FRIEDRICH prior to
repairs being made.
(9-12)
92
CUSTOMER SATISFACTION and QUALITY ASSURANCE
Friedrich is a conscientious manufacturer, concerned about customer satisfaction, product quality, and
controlling warranty costs.As anAuthorized Service Provider you play a vital role in these areas. By adhering
to the policies and procedures you provide us with vital information on each warranty repair you complete.
This information is used to identify product failure trends, initiate corrective action, and improve product
quality, thereby further reducing warranty expenses while increasing customer satisfaction levels.
FRIEDRICH AUTHORIZED PARTS DEPOTS
AAA Refrigeration Service
1322 24th Street, Suite B
Kenner, Louisiana 70062
504-464-7444
The Gabbert Company
6868 Ardmore
Houston, Texas 77054
713-747-4110
Reeve Air Conditioning, Inc.
2501 South Park Road
Hallandale, Florida 33009
954-962-0252
877-813-7444
800-458-4110
800-962-3383
Alamo Service Company
1450 North Flores Street
San Antonio, Texas 78212
210-227-2450
Johnstone Supply of Woodside Valley of the Sun
27-01 Brooklyn Queens Expway
Woodside, New York 11377
718-545-5464
4710 W. Dewey Drive
Las Vegas, NV 89118
702-547-4900
800-328-2450
800-431-1143
866-259-8500
A/C Warehouse
670 Avahl Street
Honolulu, Hi 96813
808-545-3084
International Parts Depot
Traco Corp.
380 Paterson Road
Carlstadt, NJ 07072
201-939-1600
TECHNICAL SUPPORT
CONTACT INFORMATION
FRIEDRICH AIR CONDITIONING CO.
10001 Reunion Place, Ste. 500, San Antonio, TX 78216
(210) 546-0500 877-599-5665 x 261 FAX (210) 546-0631
Email: [email protected]
Printed in the U.S.A.
Kuhl-Serv/PartsMan (9-12)
93
FRIEDRICH AIR CONDITIONING CO.
10001 Reunion Place, Ste 500, San Antonio, TX 78216
P 210-546-0500 l F 210-546-0731
Printed in the U.S.A.
Kuhl-Serv/PartsMan (9-12)
|