Friedrich X STAR R 410A User Manual
2 0 1 0  
Room Air Conditioners  
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R-410A Models  
Cool Only  
115-Volt: XQ05M10A, XQ06M10A, XQ08M10A, XQ10M10A  
Cool with Electric Heat  
115-Volt: EQ08M11A  
X-Star-ServMan (4-10)  
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 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 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 this 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.  
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, or not following the above  
Safety Warnings 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 result in damage to the unit and/or minor to serious  
property damage.  
INTRODUCTION  
This service manual is designed to be used in conjunction with the operation and installation manual provided  
with each unit.  
This service manual was written to assist the professional HVAC service technician to quickly and accurately  
diagnose and repair any malfunctions of this product.  
This manual, therefore, will deal with all subjects in a general nature. (i.e. All text will pertain to all models).  
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.)  
Compressor  
Liquid Filter Driers  
Condenser Coil  
Discharge Air  
Front Cover  
System Controls  
Outdoor Grille  
Sleeve  
Evaporator Coil  
Return Air Grille/Filter  
Blower Wheel  
Blower Motor  
Condenser Fan Blade  
Basepan  
4
UNIT IDeNTIfICATION  
Model Number Code  
X Q 08 M 1 0 A  
8th Digit – Engineering  
Major change  
1st Digit – Function  
E = Electric Heat  
X = Straight Cool  
7th Digit – Options  
0 = Straight Cool  
1 = 1 KW Heat Strip, Nominal  
2nd Digit  
Q = Q-Star Chassis Size  
6th Digit – Voltage  
1 = 115 Volts  
5th Digit  
Alphabetical Modifier  
3rd and 4th Digit - Approximate  
BTU/HR in 1000s (Cooling)  
Heating BTU/Hr capacity listed in the  
Specification/Performance Data Section  
RAC Serial Number Identification Guide  
Serial Number  
Decade Manufactured  
A
K
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  
5
PeRfORMANCe DATA  
R-410A  
REF.  
EVAP. AIR TEMP. DEG. F  
OPERATING PRESSURES  
ELECTRICAL RATINGS  
BREAKER FUSE  
60 Hertz Amps  
COOLING  
CONDENSER  
Discharge Temp Suction Temp Super Heat Sub-Cooling  
Voltage  
PERFORMANCE DATA*  
TEMPERATURE DEG. F  
Temp.  
Drop F.  
Locked Rotor Charge in  
Discharge Air  
Suction  
Discharge  
Amps Cool Amps Heat  
Amps  
OZ.  
XQ05M10A  
XQ06M10A  
XQ08M10A  
XQ10M10A  
EQ08M11A  
57  
54  
51  
47  
49  
23  
26  
29  
33  
31  
117  
120  
119  
131  
120  
133  
152  
160  
176  
162  
60  
63  
63  
59  
60  
5
19  
18  
25  
32  
27  
157  
150  
138  
132  
133  
410  
410  
420  
490  
420  
4.5  
4.9  
6.3  
9.8  
24.0  
25.0  
32.0  
57.0  
32.0  
27.0  
21.0  
25.5  
24.0  
25.5  
115  
115  
115  
115  
115  
15  
15  
15  
15  
15  
12  
13  
12  
14  
7.0  
7.6  
*Rating Conditions: 80 degrees F, room air temp. & 50% relative humidity, with 95 degree F, outside air temp & 40% relative humidity, all systems use R410A.  
Energy  
Estimated  
Yearly  
Room Side  
Air  
Moisture  
Net  
Cooling  
Capacity Btu Capacity Btu  
Heating  
Volts  
Rated  
Cooling  
Amps  
Cooling  
Watts  
Heating  
Amps  
Heating  
Watts  
Ratio  
EER  
Operating Removal Circulation  
Weight  
Sleeve Lbs  
Model  
COP  
Cost  
Pints/HR  
CFM  
XStar  
®
XQ05M10A  
XQ06M10A  
XQ08M10A  
XQ10M10A  
5500  
6000  
7500  
9500  
—
—
—
—
115  
115  
115  
115  
4.5  
4.9  
6.9  
9.0  
491  
500  
701  
970  
—
—
—
—
—
—
—
—
11.2  
12.0  
10.7  
9.8  
$39  
†
1.0  
1.0  
1.7  
2.5  
170  
175  
175  
180  
Q
Q
Q
Q
72  
72  
71  
71  
$56  
$56  
XStar  
®
Electric Heat  
EQ08M11A 7500  
4000  
115  
6.3  
701  
11.2  
1290  
2.8  
10.7  
$56  
1.9  
175  
Q
72  
As an ENERGY STAR® partner, Friedrich Air Conditioning Co. has determined that the selected ENERGY STAR® () models  
meet the ENERGY STAR®  
Estimated yearly operating cost based on a 2007 national average electricity cost of 10.65 cents per kWh.  
† The estimated yearly operating cost of this model was not available at the time the range was published.  
Installation Information / Sleeve Dimensions  
Thru-the-wall Installation  
Finished Hole  
Depth Shell Depth to  
Window Width  
Minimum  
Extension  
Into Room*  
Minimum  
Extension  
Outside*  
with Front  
Louvers  
Sleeve  
Height  
Width  
19  
Minimum** Maximum Height  
Width  
Max. Depth  
3
Q
14"  
21 /8"  
22"  
42"  
14 ¼"  
20"  
8 ½”  
¾
"
8
½"  
5
½"  
10 ¾"  
* Minimum extensions when mounted in a window.  
** Minimum widths achieved using one side curtain assembly as opposed to both in a standard installation.  
Circuit Rating/ Breaker  
Circuit Rating  
Breaker or  
T-D Fuse  
Plug  
Face  
(NEMA#)  
Wall Outlet  
Appearance  
Power Cord  
Length (ft.)  
Model  
XQ05M10A, XQ06M10A,  
XQ08M10A, XQ10M10A  
EQ08M11A  
7
125V - 15A  
5 - 15P  
6
Front  
SIDE VIEW  
(
Window Mounting Kits  
Heat/Cool Models  
Kit No.  
EQ08M11A  
WIKQ  
Friedrich heat/cool models include accessories for  
thru-the-wall installation only. Window mounting requires  
use of optional accessory kit as listed above.  
6
eleCTRICAl DATA  
WARNING  
ELECTRIC SHOCK HAZARD  
Turn off electric power before service or  
installation.  
All electrical connections and wiring MUST be  
installedbyaqualifiedelectricianandconformto  
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  
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.  
Receptacle  
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.  
*HACR: Heating Air Conditioning and Refrigeration  
7
WARNING: Before operating unit  
Make sure the wiring is adequate for your unit.  
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 Figure 1.  
WARNING  
ELECTRICAL SHOCK HAZARD  
Make sure your electrical receptacle has the same  
configuration as your air conditioner’s plug. If  
different, consult a Licensed Electrician.  
Do not use plug adapters.  
Do not use an extension cord.  
Do not remove ground prong.  
DO NOT use an extension cord.  
The cord provided will carry the proper amount of electrical power to the  
unit; an extension cord will not.  
Always plug into a grounded 3 prong outlet.  
Failure to follow these instructions can result in  
electrical shock, serious injury or death.  
Make sure that the receptacle is compatible with  
the air conditioner cord plug provided.  
This insures proper grounding. If you have a two prong receptacle you  
will need to have it replaced with a grounded receptacle by a certified  
electrician. The grounded receptacle should meet all national and local  
codes and ordinances. Under no circumstances should you remove the  
ground prong from the plug. You must use the three prong plug furnished  
with the air conditioner.  
CIRCUIT RATING  
REQUIRED WALL  
OR TIME DELAY  
RECEPTACLE  
FUSE  
MODEL  
NEMA  
NO.  
AMP  
VOLT  
XQ05  
EQ08  
• XQ06 • XQ08 • XQ10  
15  
125  
5-15R  
Test the power cord  
Figure 1  
All Friedrich room air conditioners are shipped from the factory with a  
Leakage Current Detection Interrupter (LCDI) equipped power cord. The  
LCDI device meets the UL and NEC requirements for cord connected air  
conditioners.  
To test your power supply cord:  
1. Plug power supply cord into a grounded 3 prong outlet.  
2. Press RESET (See Figure 2).  
RESET  
TEST  
3. Press TEST (listen for click; Reset button trips and pops out).  
WARNING  
TEST BEFORE EACH USE  
1. PRESS RESET BUTTON  
2. PLUG LDCI INTO POWER  
RECEPTACLE  
3. PRESS TEST BUTTON,  
RESET BUTTON SHOULD  
POP UP  
4. Press and release RESET (listen for click; Reset button latches and  
remains in). The power supply cord is ready for operation.  
4. PRESS TEST BUTTON,  
FOR USE  
DO NOT USE IF ABOVE TEST  
FAILS  
NOTE: LCDI device is not intended to be used as a switch.  
WHEN GREEN LIGHT IS ON  
IT IS WORKING PROPERLY  
Once plugged in the unit will operate normally without the need to reset  
the LCDI device.  
If the device fails to trip when tested or if the power supply cord is  
damaged it must be replaced with a new supply cord from the manufac-  
turer. We recommend you contact our Technical Assistance Line at  
(800) 541-6645 ext. 845. To expedite service, please have your model  
and serial number available.  
Figure 2  
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 ofchassis seal gasket  
Make sure the seal gasket has been installed properly to minimize noise  
and improve efficiency. If the chassis seal gasket has not been installed,  
please  
refer to Step 14 of the installation instructions.  
Also, if you switch from Cool mode to Fan Only, and switch back to  
COOL mode, there is a three minute delay before the compressor comes  
back on.  
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
How to operate the Friedrich room air conditioner (XQ models)  
To start unit  
Figure 3  
8
9
2
3
4
1
If your air conditioner is installed and plugged into a proper receptacle, it is  
ready to go. The firsttimethe unit is started, thecompressorwilldelay for three  
minutes. See Automatic Component Protection on the following page.  
X Star  
Touch the Power button once. The unit will automatically be in Cool  
mode with the temperature set at 75°F (24°C) and the fan speed at  
F1, the sleep setting.  
1
PM  
Power  
To set mode of operation  
When you rst turn the unit on, it will be in the Cool mode (light on), with  
constant fan.  
Cool  
Mode  
Fan  
®
MoneySaver  
Speed  
Fan Only  
Clock  
Touch the Mode button once to activate the MoneySaver® (light on).  
2
Timer  
Set  
Start Time  
On/Off  
Hour  
Temp/Hour  
MoneySaver® is a feature that cycles the fan with the compressor  
so that the fan does not run all the time. This saves energy and  
improves dehumidi cation. Or you may prefer constant fan for more  
air movement (to return to constant fan, touch the Mode button two  
more times).  
Stop Time  
6
5
13  
10 11 12  
7
In order to run the fan by itself, do the following:  
To set the hour clock  
Continuing fromMoneySaver® mode (light on), touchtheModebutton  
once to activate the FAN ONLY feature (light on).  
3
Touch the Set Hour button to see the current setting (clock light  
10  
comes on). The number that is displayed is the approximate time  
The FAN ONLY setting will circulate air in the room without the com-  
(hour only). Use the and  
buttons to change the settings. BE  
pressor coming on.  
SURE TO SET A.M. AND P.M. ACCORDINGLY. (P.M. is indicated  
by a red light in the upper left corner of the display).  
To adjust temperature  
Use the Mode button to select either the COOL or MoneySaver®  
function  
To set the timer  
NOTE: Set the HOUR CLOCK before attempting to set timer functions.  
4
You can set the START and STOP times a minimum of one hour apart, and  
a maximum of twenty-three hours apart.  
COOLER – Touch the  
button to lower the room air temperature.  
button to raise the room air temperature.  
and buttons at the same time to switch the  
5
6
7
WARMER – Touch the  
After setting the time, press the Set Hour button once (Start light  
11  
12  
comes on). Use the  
and  
buttons to select the time that the  
Press both the  
temperature readout from Fahrenheit (°F) to Celsius (°C).  
unit will START.  
Repeat step 7 to switch from °C back to °F.  
After selecting the STARTtime, press theSetHourbutton once more  
(Stop light comes on). Use the and buttons to select the time  
To adjust fan speed  
that the unit will STOP. After selecting the stopping time, press the  
Set Hour button once.  
Touch the FanSpeedbutton to see the current setting. Touch it again  
to change speed. F1 is the lowest setting (SLEEP SETTING / LOW),  
F2 is MEDIUM, and F3 is HIGH.  
8
Press the Timer On/Off button (light turns on) to activate the timer  
function. To deactivate this function, press theTimer On/Off button  
once again (light turns off). Once the on and off times have been  
selected, they will remain in memory and cycle daily until changed.  
13  
To activate Smart Fan  
NOTE: If the unit is unplugged or the power is interrupted, the HOUR  
must be reset or the Timer On/Off will not function when desired.  
There is a fourth option, SF, when selecting the fan speed. This is  
the SMART FAN function. SMART FAN DOES NOT OPERATE IN  
CONJUCTION WITH THE FAN ONLY MODE.  
9
Automatic component protection  
Smart Fan will adjust the fan speed automatically to maintain the  
desired comfort level. For example, if the outside doors in your home  
are opened for an extended period of time, or more people enter a  
room, Smart Fan may adjust to a higher fan speed to compensate  
for the increased heat load. This keeps you from having to adjust the  
fan speed on your own.  
Your unit is equipped with Automatic Component Protection. To protect the  
compressor of the unit, there is a three minute start delay if you turn the unit  
off or if power is interrupted. The fan operationwill not be affected. Also, if you  
switch from Cool mode to Fan Only, and switch back to Cool mode, there  
is a three minute delay before the compressor comes back on.  
9
How to use the remote control (XQ models)  
To start unit  
To set the timer  
NOTE: You can set the START and STOP times a minimum of one hour  
POWER - Press the Power button once. The unit will automatically  
start in the mode and fan speed it was last left on.  
1
apart, and a maximum of 23 hours apart.  
TIMER START - Press Start to view the current start time for cooling.  
Continue pressing the Start button until you arrive at the start time  
you desire. The start time for cooling will then be set.  
9
To set mode of operation  
COOL - Press the Cool button to automatically switch the operating  
mode to COOL.  
2
3
4
TIMER STOP - Press the Stop button. Continue pressing the Stop  
button until you arrive at the stop time you desire. The stop time for  
cooling will then be set.  
10  
11  
FAN ONLY - Press the Fan Only button if you want to run the fan  
only.  
TIMER ON / OFF - Press the On/Off button to activate (light on) or  
deactivate (light off) the timer. Once the on and off times have been  
selected, they will remain in memory and cycle daily until changed.  
MoneySaver® - Press the MoneySaver® button to activate the  
MoneySaver® feature. This feature cycles the fan with the compres-  
sor so that the fan does not run all the time.  
NOTE: If the unit is unplugged or the power is interrupted, the Set Hr.  
function must be reset or the On/Off function will not work.  
To adjust temperature setting  
WARMER - Press the Warmer button to raise the temperature  
setting.  
5
COOLER - Press the Cooler button to lower the temperature  
setting.  
6
Temperature  
Cooler  
Warmer  
Power  
6
5
To adjust fan speed  
Cool  
2
3
1
4
7
8
FAN SPEED - Press the Fan Speed button to see the current set-  
ting. Press again to change the fan speed. F1 is the lowest setting  
(SLEEP / LOW), F2 is MEDIUM, F3 is HIGH, and SF is the SMART  
FAN setting.  
7
Fan  
Fan  
Money  
Saver®  
Only  
Speed  
Timer Operation  
On/Oꢀ Start  
Stop Set Hr.  
11  
9
10  
To set the hour clock  
SET HOUR CLOCK - Press Set Hr. once to see the current clock  
setting. Continue pressing the button until you arrive at the current  
time (Hour only). Minutes are not shown on the display. Make sure  
that the A.M. / P.M. setting is correct.  
8
Additional RC1 wireless remote controls can be purchased from your Friedrich dealer.  
How To Operate The EQ08  
Function Control Knob  
The left knob is a six position control that allows you to  
select heat or cool in either low speed or high speed. Plus  
you can select fan only if you wish.  
Thermostat Knob  
The right hand knob is the thermostat - turn it clockwise for  
cooler, counter-clockwise for warmer.  
10  
eleCTRONIC CONTROl SeQUeNCe Of OPeRATION  
MODE CONTROL  
FAN ONLY MODE  
The mode control pad(s) allow the selection of the operating  
modes of the unit.  
When in the FAN ONLY mode, the compressor will not  
operate. The fan will run continuously at the user-selected  
speed (see “Fan Speed Set” below). Smart Fan is not  
available in FAN ONLY Mode.  
There is a two second delay before the mode activates its  
appropriate relay.  
FAN SPEED SET  
OPERATING SEQUENCE / CHARACTERISTICS  
AND FEATURES  
Compressor Operation  
The run state of the compressor is determined by the  
difference between the indoor ambient temperature and  
the set temperature. See specific mode of operation for  
details.  
XQ fan speed is changed by pressing FAN SPEED button  
and scrolling through F1, F2, F3 and SF (Smart Fan) in the  
digital display.  
Therewillbea2seconddelaybeforethefanspeedchanges  
to prevent unnecessary switching of the relays during fan  
speed selection.  
Compressor Time Delay: 180 seconds  
This feature is initiated every time the compressor is de-  
energized, either due to:  
(1) satisfying the temperature set point  
(2) changing mode to fan only  
SMART FAN  
On the XQ model, smart fan is activated by pressing the  
FAN SPEED button and scrolling through speeds until  
“SF” appears in the digital display. Using the remote  
control, Smart Fan is selected by the fourth push of Fan  
Speed button.  
(3) a power interruption or  
(4) turning the unit off  
Smart fan changes fan speeds based on the temperature  
differential between the ambient and set temperatures.  
The compressor is also time delayed for 3 minutes when the  
control is first plugged in or power is restored after failure.  
When the compressor cycles off as a result of satisfying the  
“load”, the time delay is typically timed out during the off  
cycle. Compressor time delay is bypassed by “Test Mode”.  
CHECKING ROOM TEMPERATURE  
Check the room temperature at the electronic control  
pad by pressing the “FAN SPEED” button and the  
“TEMP ” button at the same time on XQ models.  
Return Air Temperature Sensor  
The control range is 60°F to 90°F +/- 2.0°F.  
The indoor temperature will display for 10 seconds. Indoor  
temperature can be viewed in all modes, including the  
TEST mode. The display can be changed back to SET  
temperature by pressing any key, except the ON/OFF  
button, or after 10 seconds has elapsed.  
Frost Protection Sensor  
Temperature settings:  
Disable the compressor when sensing 30 +/- 3°F for 2 min.  
continuously.  
Enable compressor @ 55 +/- 5°F.  
KEEP ALIVE  
The fan should not be affected by the Frost Protection. It  
should continue to function normally if freeze protection is  
called for.  
The electronic control has a memory to retain all functions  
and status as set up by the user in the event of a power  
failure. Once power is restored to the unit there is a two  
second delay before the fan comes on and approximately  
three minutes delay before the compressor is activated,  
providing that the mode was set for cooling and the set  
point temperature has not been met in the room.  
COOL MODE FOR XQ MODELS  
When in the COOL mode, the control will turn on the  
compressor when the indoor temperature is 1.5°F above the  
set point and turn off the compressor when the ambient gets  
below the set point by 1.5°F. The fan will run continuously.  
REbOOT/RESET THE CONTROL bOARD  
With unit on, press “MODE” and “TEMP/HOUR ” buttons  
simultaneously for 10 seconds. If the panel will reboot, you  
will hear the fan come on and the temperature window will  
read 60 degrees. If this happens, turn the unit off for about  
10 seconds and then turn it back on to finish the reboot  
cycle. If the panel does not reboot, you possibly need to  
replace it.  
MONEY SAVER MODE  
When in MONEY SAVER mode, the system will be turned  
on when the indoor temperature gets above the set point by  
0.75°F and turns off when the indoor temperature gets below  
the set point by 0.75°F. The fan will turn on 5 seconds before  
the compressor and turn off 5 seconds after the compressor  
stops. If the compressor is delayed the fan will continue to  
run while the compressor restarts. If the thermostat remains  
satisfied for more than approximately 9 minutes, the fan will  
turn on for a period of 90 seconds for air sampling. Operation  
in MONEY SAVER mode will light both the MONEY SAVER  
and COOL indicators.  
11  
FUNCTIONAL COMPONENT DEFINITIONS  
MECHANICAL COMPONENTS  
Plenum assembly Diffuser with directional louvers used  
to direct the conditioned airflow.  
Blower wheel Attaches to the indoor side of the fan motor  
shaft and is used for distributing unconditioned, room side  
air though the heat exchanger and delivering conditioned  
air into the room.  
Slinger fan blade Attaches to the outdoor side of the fan  
motor shaft and is used to move outside air through the  
condenser coil, while slinging condensate water out of the  
base pan and onto the condenser coil, thus lowering the  
temperature and pressures within the coil.  
ELECTRICAL COMPONENTS  
Thermostat Used to maintain the specified room side  
comfort level  
System switch Used to regulate the operation of the fan  
motor, the compressorortoturnthe unitoff. Fortroubleshoot-  
ing, refer to the wiring diagrams and schematics in the back  
of this service manual.  
Capacitor Reduces line current and steadies the voltage  
supply, while greatly improving the torque characteristics of  
the fan motor and compressor motor.  
Smart Fan  
Automatically adjusts the fan speed to main-  
tain the desired room temp.  
MoneySaver® switch When engaged, it sends the power  
supply to the fan motor through the thermostat, which allows  
for a cycle-fan operation.  
Fan Motor Dual-shafted fan motor operates the indoor  
blower wheel and the condenser fan blade simultaneously.  
Heatingelement Electricresistanceheater, availablein  
EQ08 model.  
Heat anticipator Used to provide better thermostat and  
room air temperature control.  
HERMETIC COMPONENTS  
Compressor Motorizeddeviceusedtocompressrefrigerant  
through the sealed system.  
Capillarytube Acylindrical meter deviceusedto evenly dis-  
tribute the flow of refrigerant to the heat exchangers (coils.)  
12  
COMPONeNTS TeSTING  
TESTING THE ELECTRONIC CONTROL  
ERROR CODE LISTINGS  
bOARDS FOR XQ MODELS  
E1 SHORT CYCLE SITUATION: Defined as (compressor  
powered on before the three minute time delay ten times in  
one hour. Investigate and correct short cycling problem.  
X Star  
PM  
E2 KEYbOARD STUCK ERROR: If key button(s) are  
pressed continuously for twenty seconds or more. If MODE  
key is stuck, unit will default to cool. Exit Error Code  
Mode to see if error “E2” is no longer displayed and unit is  
functioning. Replace board if “E2” still displays after exiting  
Error Code Mode.  
Power  
Cool  
Fan  
®
MoneySaver  
Speed  
Mode  
Fan Only  
Clock  
Timer  
On/Off  
Set  
Start Time  
Stop Time  
E3 FROST PRObE OPEN: Normal operation is allowed.  
Ohm frost probe. Replace probe if ohm value not read. If  
ohm value is present replace board.  
Hour  
Temp/Hour  
E4 FROST PRObE SHORT: Normal operation allowed.  
Replace probe.  
Activating Test Mode:  
Activate test mode by pressing at the same time the  
“MODE” button and the “TEMP ” button on XQ  
models. LEDs for Hour, Start, and Stop will blink 1 bps  
while Test Mode is active.  
E5 INDOOR PRObE OPEN: Control assumes indoor  
ambient temperature is 90 degree F and unit will operate.  
Ohm indoor probe. Replace probe if ohm value not read.  
Test Mode has duration of 90 minutes. Test Mode can  
be activated under any conditions, including Off. Test  
Mode is cancelled by pressing the On/Off button,  
unplugging the unit, or when the 90 minutes is timed  
out. All settings revert to the factory default settings of  
Cool, 75 degrees F, Timer and Set Hour features are  
nonfunctional.  
E6 INDOOR PRObE SHORT: Control assumes ambient  
temperature is 90 degree F and unit will operate. Replace  
probe.  
NOTE: All Error Code displays for Frost & Indoor Probe  
will allow unit to operate. Unit may or will ice up if faulty  
components not replaced.  
Test Mode overrides the three-minute lockout, all  
delays for compressor and fan motor start / speed  
change, and no delay when switching modes.  
FROST PRObE SENSOR: disables compressor at 35  
degrees F.  
INDOOR PRObE SENSOR: Control range is 60 degrees F  
to 90 degrees F +/- 2 degrees F.  
Test Mode default settings are ON, Money Saver, 60  
degrees F, and High fan speed.  
Indoor temperature will be displayed by pressing:  
(XQ units) The Fan Speed button and the “TEMP  
button.  
”
Activating Error Code Mode: (Submode of Test Mode)  
Unit must be in Test Mode to enter Error Code Mode  
The indoor temperature will be displayed for 10 seconds.  
The display will change back to the Set Point temperature  
by pressing any key button except for the On/Off button.  
The indoor temperature can be viewed in all modes,  
including test mode.  
1. Activate Error Code Mode by pressing the “TIMER ON/  
OFF” button on XQ models. LED for the “TIMER ON/OFF”  
will flash 1 bps while Error Code Mode is active. Pressing  
the “TEMP/HR  
” button will display 00. Consecutive  
presses will scroll through all error codes logged. Press  
the “TEMP/HR ” button to see the reverse order of all  
error codes logged. When the end of logged error codes is  
reached the temperature set point will appear.  
IMPORTANT: Error Codes are cleared from the  
log by exiting from Error Code Mode. To exit on XQ  
models, press Timer On/Off button. Or unplug unit to  
exit Error Code Mode. Plug unit in after 5 seconds to  
resume normal operation of unit.  
13  
COMPONeNTS TeSTING (Continued)  
EQ08 SYSTEM CONTROL SWITCH - TEST  
4. Turn thermostat knob counterclockwise to its warmest  
position.  
“EQ08” SYSTEM CONTROL SWITCH – TEST  
5. Test for continuity - contacts should be open.  
Turn knob to phase of switch to be tested. There must be  
continuity as follows:  
NOTE: The thermostat must be within the temperature  
range listed to open and close.  
1. “Fan Only” Position – between terminals “MS” and “H”  
To maintain the comfort level desired, a cross ambient type  
thermostat is used. The thermostat has a range from 60°  
±2°F to 92° ±3°F. The thermostat bulb is positioned in front  
of the evaporator coil to sense the return air temperature.  
Thermostat malfunction or erratic operation is covered in  
the troubleshooting section of this manual.  
2. “Hi Cool” Position – between terminals “L1” and “C” and  
“MS” and “H”  
3. “Low Cool” Position – between terminals “L1” and “C”  
and “MS” and “LO”  
4. “Low Heat” Position – between terminals “L2” and “2”  
and “MS” and “LO”  
TEST:  
Cooling/Heating Models: Remove wires from thermostat  
and check continuity between terminal “2” (common) and  
“3” for cooling. Check between terminals “2” (common)  
and “1” for heating. Also check that contacts in thermostat  
open after placing in either position. NOTE: Temperature  
must be within range listed to check thermostat. Refer to  
the troubleshooting section in this manual for additional  
information on thermostat testing.  
5. “Hi Heat” Position – between terminals “L2” and “2” and  
“MS” and “H”  
L1  
System Control Switch  
(EQ Models)  
B1  
L2  
MS  
THERMOSTAT ADJUSTMENT  
No attempt should be made to adjust thermostat. Due  
to the sensitivity of the internal mechanism and the  
sophisticated equipment required to check the calibration,  
it is suggested that the thermostat be replaced rather than  
calibrated. Thermostat bulb must be straight to insure  
proper performance.  
C
H
2
LO  
THERMOSTAT (“EQ08” Models)
This thermostat is single pole-double throw, cross ambient  
with a range of 60° to 92°F and a differential of ±2°F. Terminal  
“2” is common.  
Thermostat  
Thermostat  
(EQ Model)  
THERMOSTAT BULB LOCATION  
The position of the bulb is important in order for the  
thermostat to function properly. The bulb of the thermostat  
should be located approximately 45° to a maximum of 60°  
from horizontal. Also, do not allow the thermostat bulb to  
touch the evaporator coil.
WARNING  
ELECTRIC SHOCK HAZARD  
Disconnect power to the unit before  
servicing. Failure to follow this warning  
could result in serious injury or death.  
Thermostat Bulb Location  
(EQ Model)  
TEST:  
Thermostat sensor holder 020  
to be positioned between the  
4th and 5th and 6th and 7th  
rows of tubes from the bottom  
of the coil at dimension shown  
1. Remove leads from thermostat.  
2. Turn thermostat knob clockwise to its coldest  
position.  
3. Test for continuity between the two terminals. Contacts  
should be closed.  
14  
COMPONeNTS TeSTING (Continued)  
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.
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.  
WARNING  
ELECTRIC SHOCK HAZARD  
Capacitor Check with Capacitor Analyzer  
Disconnect power to the unit before  
servicing. Failure to follow this warning  
could result in serious injury or death.  
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.  
BLOWER/FAN MOTOR - TEST  
1. Determine that capacitor is serviceable.  
2. Disconnect fan motor wires from fan speed switch or  
system switch.  
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.  
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.  
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.  
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.  
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  
CAPACITORS  
WARNING  
ELECTRIC SHOCK HAZARD  
Turn off electric power before servicing.  
Discharge capacitor with a 20,000 Ohm 2 Watt  
resistor before handling.  
Failure to do so may result in personal injury,  
or death.  
15  
COMPONeNTS TeSTING (Continued)  
HEATING ELEMENT
DRAIN PAN VALVE  
All electric heat models are equipped with a heating element.  
The EQ08 has a 1.15 KW element.  
During the cooling mode of operation, condensate which  
collects in the drain pan is picked up by the condenser fan  
blade and sprayed onto the condenser coil. This assists  
in cooling the refrigerant plus evaporating the water.  
Heating Element  
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 condenser  
fan blade to freeze in the accumulated water and prevent  
it from turning.  
To provide a means of draining this water, a bellows type  
drain valve is installed over a drain opening in the base  
pan.  
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.  
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.  
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.  
Bellows Assembly  
Drain Pan Valve  
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.  
The control is designed to open at 110°F ±6°F. Test  
continuity below 110°F and for open above 110°F.  
TESTING THE HEATING 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 10.11  
ohms for the 1.15 KW heater should be registered.  
16  
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  
driertotrapanymoisturepresentinthesystem,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  
17  
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.  
R410Asystems 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.  
18  
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  
2. Evacuation from both the high side and low side of the  
system simultaneously.  
detecting HFC (Hydrofluorocarbon) refrigerants.  
8. Accurate refrigerant charge measuring device such  
as:  
3. Introducing refrigerant charge into high side of the  
system.  
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  
SealedRefrigerationSystemcontainsrefrigerant  
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 XStar 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.  
19  
Method Of Charging / Repairs  
The acceptable method for charging the RAC 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 R410-A  
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.  
20  
WARNING  
WARNING  
ELECTRIC SHOCK HAZARD  
Turn off electric power before service or  
installation.  
HIGH PRESSURE HAZARD  
SealedRefrigerationSystemcontainsrefrigerant  
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  
21  
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  
22  
COMPRESSOR CHECKS  
External Overload  
WARNING  
ELECTRIC SHOCK HAZARD  
The compressor is equipped with an external overload  
which senses both motor amperage and winding tem-  
perature. High motor temperature or amperage heats the  
overload causing it to open, breaking the common circuit  
within the compressor.  
Turn off electric power before service or  
installation. Extreme care must be used, if it  
becomes necessary to work on equipment with  
power applied.  
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.  
Failure to do so could result in serious injury or  
death.  
Locked Rotor Voltage (L.R.V.) Test  
Locked rotor voltage (L.R.V.) is the actual voltage available  
at the compressor under a stalled condition.  
Checking the External Overload  
Single Phase Connections  
WARNING  
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.  
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.  
Failure to do so could result in serious injury or  
death.  
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.  
WARNING  
BURN HAZARD  
Certain unit components operate at  
temperatures hot enough to cause burns.  
Proper safety procedures must be followed,  
and proper protective clothing must be  
worn.  
Amperage (L.R.A.) Test  
Failure to follow this warning could result  
in moderate to serious injury.  
The running amperage of the compressor is the most impor-  
tant of these readings. A running amperage higher than that  
indicated in the performance data indicates that a problem  
exists mechanically or electrically.  
With power off, remove the leads from compressor termi-  
nals. If the compressor is hot, allow the overload to cool  
before starting check. Using an ohmmeter, test continu-  
ity across the terminals of the external overload. If you  
do not have continuity; this indicates that the overload is  
open and must be replaced.  
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 compres-  
sor. 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.).  
23  
Single Phase Resistance Test  
Remove the leads from the compressor terminals and set  
the ohmmeter on the lowest scale (R x 1).  
Many compressor failures are caused by the following  
conditions:  
1. Improper air flow over the evaporator.  
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”).  
2. Overcharged refrigerant system causing liquid to be  
returned to the compressor.  
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.”  
3. Restricted refrigerant system.  
4. Lack of lubrication.  
5. Liquid refrigerant returning to compressor causing oil  
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.  
to be washed out of bearings.  
6.  
Noncondensables such as air and moisture in  
the system. Moisture is extremely destructive to a  
refrigerant system.  
7. Defective capacitors.  
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.  
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.  
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.  
24  
COMPReSSOR RePlACeMeNT  
Recommendedprocedure forcompressor  
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  
RISK OF ELECTRIC SHOCK  
Unplug and/or disconnect all electrical power  
to the unit before performing inspections,  
maintenances or service.  
stub of the defective compressor into a clean  
container.  
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  
SealedRefrigerationSystemcontainsrefrigerant  
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 R410-A 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.  
25  
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  
SealedRefrigerationSystemcontainsrefrigerant  
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 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.  
26  
ROUTINe MAINTeNANCe  
AIR FILTER  
WARNING  
Clean the unit air intake filter at least every 300 to 350 hours  
of operation. Clean the filters with a mild detergent in warm  
water and allow to dry thoroughly before reinstalling.  
ELECTRIC SHOCK HAZARD  
Turn off electric power before inspections,  
maintenances, or service.  
COILS AND bASE PAN  
Extreme care must be used, if it becomes  
necessary to work on equipment with power  
applied.  
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 verti-  
cal 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.  
Failure to do so could result in serious injury  
or death.  
WARNING  
EXCESSIVE WEIGHT HAZARD  
Use two people to lift or carry the unit, and wear  
proper protective clothing.  
bLOWER WHEEL / HOUSING / CONDENSER FAN /  
SHROUD  
Failure to do so may result in personal injury.  
Inspect the indoor blower housing, evaporator blade, con-  
denser 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 con-  
denser shroud. Use warm or cold water when rinsing these  
items. Allow all items to dry thoroughly before reinstalling  
them.  
WARNING  
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.  
ELECTRONIC / ELECTRICAL / MECHANICAL  
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.  
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.  
Use an electronic tester to measure wet bulb temperatures  
indoors and outdoors.  
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.  
27  
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.  
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.  
CLEARANCES  
Inspect the surrounding area (inside and outside) to ensure that the unit’s clearances have not been compromised or  
altered.  
Compressor  
Liquid Filter Driers  
Condenser Coil  
Discharge Air  
Front Cover  
System Controls  
Outdoor Grille  
Sleeve  
Evaporator Coil  
Return Air Grille/Filter  
Blower Wheel  
Blower Motor  
Condenser Fan Blade  
Basepan  
28  
ROOM AIR CONDITIONeR UNIT  
PeRfORMANCe TeST DATA SHeeT  
DATE: _______________ MODEL:_______________ SERIAL:________________  
YES  
____  
____  
____  
NO  
IS THERE A FRIEDRICH SLEEVE INSTALLED?  
IS THERE A FRIEDRICH OUTDOOR GRILL INSTALLED?  
IS MAINTENANCE BEING PERFORMED?  
____  
____  
____  
If NO is checked use back of sheet for explanation  
ELECTRICAL:  
LINE VOLTAGE (STATIC)  
START UP VOLTAGE  
AMPERAGE DRAW  
--------- VOLTS  
--------- VOLTS  
--------- AMPS (COOL)  
--------- AMPS (HEAT)  
AMPERAGE DRAW  
COMPRESSOR  
LOCKED ROTOR AMPS  
RUNNING AMPERAGE DRAW  
--------- AMPS  
--------- AMPS  
INDOOR TEMPERATURES:  
INDOOR AMBIENT TEMPERATURE  
RELATIVE HUMIDITY (RH) INDOOR  
-------- F  
-------- %  
COOL  
HEAT  
DISCHARGE AIR TEMPERATURE (INDOOR)  
RETURN AIR TEMPERATURE (INDOOR)  
---------- F --------- F  
---------- F --------- F  
OUTDOOR TEMPERATURE:  
OUTDOOR AMBIENT TEMPERATURE  
RH OUTDOOR  
--------- 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 ------------  
This is a general guide.  
Please consult manual J or M for exact load calculations.  
Due to variations in room design, climate zone and occupancy, larger areas  
may require the use of multiple units to provide the optimal cooling solution.  
29  
29  
GENERAL TROUBLESHOOTING TIPS  
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).  
Electrical overload, overheating, or  
cord pinching can trip (Reset button  
pops out) the LCDI power cord.  
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.  
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.  
30  
GENERAL 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  
31  
COOlING ONlY ROOM AIR CONDITIONeRS: TROUBleSHOOTING TIPS  
Problem  
Possible Cause  
Low voltage  
Action  
Check voltage at compressor. 115V & 230V  
units will operate at 10% voltage variance  
T-stat not set cold enough or  
inoperative or electronic control  
board is bad  
Set t-stat to coldest position. Test t-stat &  
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  
Open capacitor  
Inoperative system switch,  
thermistor or electronic board  
Broken, loose or incorrect wiring  
Problem  
Possible Cause  
Inoperative system switch  
Broken, loose or incorrect wiring  
Open capacitor  
Action  
Test switch & replace if inoperative  
Refer to applicable wiring diagram  
Test capacitor & replace if inoperative  
Test switch & replace if inoperative  
Test fan motor & replace if inoperative (be sure  
internal overload has had time to reset)  
Fan motor  
does not run  
Fan speed switch open  
Inoperative fan motor  
Problem  
Possible Cause  
Action  
Undersized unit  
Refer to industry standard sizing chart  
Thermistor or electronic board is bad,  
T-stat open or inoperative  
Set to coldest position. Test t-stat or electronic  
control board & replace if necessary.  
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  
on applicable models  
Low capacity - undercharge  
Check for leak & make repair  
Check amperage draw against nameplate. If  
not conclusive, make pressure test  
Compressor not pumping properly  
32  
COOlING ONlY ROOM AIR CONDITIONeRS: TROUBleSHOOTING TIPS  
Problem  
Possible Cause  
Action  
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 switch in “OFF” position  
Set switch correctly  
Unit does not run  
Inoperative system switch or open  
electronic control board  
Test for continuity  
Loose or disconnected wiring at  
Check wiring & connections. Reconnect per  
wiring diagram  
switch, control board or other com-  
ponents  
Problem  
Possible Cause  
Action  
Dirty filter  
Clean as recommended in Owner’s Manual  
Check for dirty or obstructed coil. Use  
pressure wash or biodegradable cleaning  
agent to clean  
Restricted airflow  
Inoperative t-stat or thermistors  
Short of refrigerant  
Test for continuity  
Evaporator coil  
freezes up  
De-ice coil & check for leak  
Inoperative fan motor  
Test fan motor & replace if inoperative  
De-ice coil. Check temp. differential (delta T)  
across coil. Touch test coil return bends for  
same temp. Test for low running current  
Partially restricted capillary tube  
Problem  
Possible Cause  
Action  
Unit undersized. Test cooling performance &  
replace with larger unit if needed  
Check for partially iced coil & check  
temperature split across coil  
Excessive heat load  
Restriction in line  
Refrigerant leak  
Check for oil at silver soldered connections.  
Check for partially iced coil. Check split across  
coil. Check for low running amperage  
Check operation of t-stat. Replace if contacts  
remain closed.  
Compressor runs  
continually & does  
not cycle off  
T-stat contacts stuck  
T-stat incorrectly wired  
Thermistor shorted  
Refer to appropriate wiring diagram  
Replace thermistor or electronic control board  
Problem  
Possible Cause  
Action  
Disconnect power to unit. Remove cover  
of t-stat & check if contacts are stuck. If so,  
replace t-stat  
T-stat contacts stuck  
Turn to higher temp. setting to see if unit  
cycles off  
T-stat set at coldest point  
Incorrect wiring  
T-stat 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  
33  
COOlING ONlY ROOM AIR CONDITIONeRS: TROUBleSHOOTING TIPS  
Problem  
Possible Cause  
Overload inoperative. Opens too  
soon  
Action  
Check operation of unit. Replace overload if  
system operation is satisfactory  
Allow a minimum of 2 minutes to allow  
pressures to equalize before attempting to  
restart. Instruct customer of waiting period  
Check voltage with unit operating. Check for  
other appliances on circuit. Air conditioner  
should be in separate circuit for proper voltage  
& fused separately  
Compressor restarted before  
system pressures equalized  
Compressor runs  
for short periods  
only. Cycles on  
overload  
Low or fluctuating voltage  
Incorrect wiring  
Refer to appropriate wiring diagram  
Check by substituting a known good capacitor  
of correct rating or test cap  
Shorted or incorrect capacitor  
Restricted or low air flow through  
Check for proper fan speed or blocked  
coils  
condenser coil or evaporator coil  
Check for kinked discharge line or restricted  
condenser. Check amperage  
Compressor running abnormally  
hot  
Problem  
Possible Cause  
Action  
Place jumper across t-stat terminals to check if  
unit operates. If unit operates, replace t-stat.  
Check as above  
Loss of charge in t-stat bulb  
T-stat does not  
turn unit on  
Loose or broken parts in t-stat  
Incorrect wiring  
Refer to appropriate wiring diagram  
Replace thermistor or electronic control board  
Defective thermistor  
Problem  
Possible Cause  
Poorly installed  
Action  
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. Correct as needed  
Problem  
Possible Cause  
Action  
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  
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  
34  
COOlING ONlY ROOM AIR CONDITIONeRS: TROUBleSHOOTING TIPS  
Problem  
Possible Cause  
Sublimation:  
Action  
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  
Action  
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  
Action  
Replace thermistor or electronic control board  
Replace t-stat  
T-stat differential too narrow  
Plenum gasket not sealing,  
allowing discharge air to short  
cycle t-stat  
T-stat or  
thermistor  
short cycles  
Check gasket. Reposition or replace as  
needed  
Clean & advise customer of periodic cleaning  
& maintenance needs of entire unit  
Restricted coil or dirty filter  
Problem  
Possible Cause  
Heat anticipator (resistor) wire  
disconnected at t-stat or system  
switch  
Action  
Refer to appropriate wiring diagram  
Disconnect plus from outlet. Remove resistor  
from bracket. Insert plug & depress “COOL”  
& “FAN AUTOMATIC” buttons. Place t-stat to  
warmest setting. Feel resistor for temperature.  
If no heat, replace resistor  
Prolonged off  
cycles (automatic  
operation)  
Heat anticipator (resistor) shorted or  
open  
Partial loss of charge in t-stat bulb  
causing a wide differential  
Replace t-stat  
Defective thermistor  
Replace thermistor or electronic control board  
Problem  
Possible Cause  
Evaporator drain pan cracked or  
obstructed  
Action  
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  
35  
HeAT / COOl ONlY ROOM AIR CONDITIONeRS: TROUBleSHOOTING TIPS  
Problem  
Possible Cause  
Action  
Disconnect power to unit. Remove resistor from  
t-stat bulb block. Plug in unit & allow to operate.  
Feel resistor for heat. If not heat, replace resistor  
Heat anticipator (resistor) shorted (on applicable  
models)  
Room temperature  
uneven  
(Heating cycle)  
Wide differential - partial loss of t-stat bulb charge Replace t-stat  
Refer to appropriate wiring diagram. Resistor is  
Incorrect wiring  
energized during "ON" cycle of compressor or  
fan.  
Problem  
Possible Cause  
Action  
Close doors or windows.  
Opened doors or windows  
Dirty filter  
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  
Check for adequate fan air across heater. Check  
control for open at 110°F & close at 100°F  
Heater hi-limit control cycling on & off  
Shorted or opened heater  
Incorrect wiring  
Ohmmeter/continuity check  
Check applicable wiring diagram  
36  
eleCTRONIC CONTROl  
COOl ONlY MODelS:  
XQ05M10A XQ06M10A XQ08M10A XQ10M10A  
37  
eleCTROMeCHANICAl CONTROl  
COOl WITH eleCTRIC HeAT MODel:  
eQ08M11A  
38  
INSTRUCTIONS FOR USING COOLING LOAD ESTIMATE  
FORM FOR ROOM AIR CONDITIONERS  
(AHAM PUB. NO. RAC-1)  
A. This cooling load estimate form is suitable for estimating the cooling load for comfort air conditioning installations  
which do not require specific conditions of inside temperature and humidity.  
B. The form is based on an outside design temperature of 95°F dry bulb and 75°F wet bulb. It can be used for areas  
in the continental United States having other outside design temperatures by applying a correction factor for the  
particular locality as determined from the map.  
C. The form includes “day” factors for calculating cooling loads in rooms where daytime comfort is desired (such as  
living rooms, offices, etc.)  
D. The numbers of the following paragraphs refer to the corresponding numbered item on the form:  
1. Multiply the square feet of window area for each exposure by the applicable factor. The window area is the  
area of the wall opening in which the window is installed. For windows shaded by inside shades or venetian  
blinds, use the factor for “Inside Shades.” For windows shaded by outside awnings or by both outside aw-  
nings and inside shades (or venetian blinds), use the factor for “Outside Awnings.” “Single Glass” includes  
all types of single thickness windows, and “Double Glass” includes sealed airspace types, storm windows,  
and glass block. Only one number should be entered in the right hand column for Item 1, and this number  
should represent only the exposure with the largest load.  
2. Multiply the total square feet of all windows in the room by the applicable factor.  
3a. Multiply the total length (linear feet) of all walls exposed to the outside by the applicable factor. Doors should  
be considered as being part of the wall. Outside walls facing due north should be calculated separately from  
outside walls facing other directions. Walls which are permanently shaded by adjacent structures should be  
considered “North Exposure.” Do not consider trees and shrubbery as providing permanent shading. An  
uninsulated frame wall or a masonry wall 8 inches or less in thickness is considered “Light Construction.” An  
insulated wall or masonry wall over 8 inches in thickness is considered “Heavy Construction.”  
3b. Multiply the total length (linear feet) of all inside walls between the space to be conditioned and any uncondi-  
tioned spaces by the given factor. Do not include inside walls which separate other air conditioned rooms.  
4. Multiply the total square feet of roof or ceiling area by the factor given for the type of construction most nearly  
describing the particular application (use one line only.)  
5. Multiply the total square feet of floor area by the factor given. Disregard this item if the floor is directly on the  
ground or over a basement.  
6. Multiply the number of people who normally occupy the space to be air conditioned by the factor given. Use  
a minimum of 2 people.  
7. Determine the total number of watts for light and electrical equipment, except the air conditioner itself, that  
will be in use when the room air conditioning is operating. Multiply the total wattage by the factor given.  
8. Multiply the total width (linear feet) of any doors or arches which are continually open to an unconditioned  
space by the applicable factor.  
NOTE: Where the width of the doors or arches is more than 5 feet, the actual load may exceed the calculated  
value. In such cases, both adjoining rooms should be considered as a single large room, and the room air  
conditioner unit or units should be selected according to a calculation made on this new basis.  
9. Total the loads estimated for the foregoing 8 items.  
10. Multiply the subtotal obtained in item 9 by the proper correction factor, selected from the map, for the particular  
locality. The result is the total estimated design cooling load in BTU per hour.  
E. For best results, a room air conditioner unit or units having a cooling capacity rating (determined in accordance  
with the NEMAStandards Publication for RoomAir Conditioners, CN 1-1960) as close as possible to the estimated  
load should be selected. In general, a greatly oversized unit which would operate intermittently will be much less  
satisfactory than one which is slightly undersized and which would operate more nearly continuously.  
F. Intermittent loads such as kitchen and laundry equipment are not included in this form.  
39  
COOLING LOAD ESTIMATE FORM  
FACTORS  
BTU/Hr.  
(Quantity x Factor)  
HEAT GAIN FROM  
QUANTITY  
DAY  
No  
Shades*  
60  
Outside  
(Area  
Inside  
1.  
WINDOWS: Heat gain from the sun.  
Awnings* X Factor)  
Shades*  
Northeast  
East  
____sq. ft.  
____sq. ft.  
____sq. ft.  
____sq. ft.  
____sq. ft.  
____sq. ft.  
____sq. ft.  
____sq. ft.  
Use  
only  
the  
largest ____  
load. ____  
Use  
only  
one.  
____  
____  
____  
20 ____  
25 ____  
20 ____  
20 ____  
30 ____  
45 ____  
35 ____  
0 ____  
25  
40  
30  
35  
45  
65  
50  
0
* These factors are for single glass  
only. For glass block, multiply the  
above factors by 0.5; for double  
glass or storm windows, multiply the  
above factors by 0.8.  
80  
Southeast  
South  
Southwest  
West  
75  
75  
110  
150  
120  
0
____  
____  
____  
Northwest  
North  
2.  
3.  
WINDOWS: Heat by conduction  
(Total of all windows.)  
_____  
_____  
Single glass  
14  
7
____sq. ft.  
____sq. ft.  
Double glass or glass block  
WALLS: (Based on linear feet of wall)  
a. Outside walls  
Light Construction  
Heavy Construction  
_____  
_____  
North Exposure  
30  
60  
____ ft.  
____ ft.  
20  
30  
Other than North exposure  
b. Inside Walls (between conditioned and  
unconditioned spaces only.)  
_____  
30  
____sq. ft.  
4.  
5.  
ROOF OR CEILING: (Use one only)  
a. Roof, uninsulated  
b. Roof, 1 inch or more insulation  
c. Ceiling, occupied space above  
d. Ceiling, insulated, with attic space above  
e. Ceiling, uninsulated, with attic space above  
_____  
_____  
_____  
_____  
_____  
19  
8
____sq. ft.  
____sq. ft.  
____sq. ft.  
____sq. ft.  
____sq. ft.  
3
5
12  
_____  
Floor: (Disregard if floor is directly on ground or  
over a basement.  
3
____sq. ft.  
_____  
_____  
6.  
7.  
8.  
NUMBER OF PEOPLE  
600  
3
____  
LIGHTS AND ELECTRICAL EQUIPMENT IN USE  
____watts  
DOORS AND ARCHES CONTINUOUSLY  
OPENED TO UNCONDITIONED SPACE: (TOTAL  
LINEAR FEET OF WIDTH.)  
_____  
_____  
300  
____ft.  
*****  
9.  
SUBTOTAL  
*****  
10. TOTAL COOLING LOAD (BTU per hour to be used  
for selection of room air conditioner(s).)  
____ Total in Item 9 X ____ (Factor from Map) =  
____  
40  
HEAT LOAD FORM  
The heat load form on the following page may be used by  
Following is an example using the heat load form:  
servicingpersonneltodeterminetheheatlossofaconditioned  
space and the ambient winter design temperatures in which  
the unit will heat the calculated space.  
A space to be conditioned is part of a house geographically  
located in an area where the lowest outdoor ambient winter  
temperature is 40°F. The calculated heat loss is 184 BTU/  
Hr./°F.  
The upper half of the form is for computing the heat loss of  
the space to be conditioned. It is necessary only to insert  
the proper measurements on the lines provided and multiply  
by the given factors, then add this result for the total heat  
loss in BTU/Hr./°F.  
Subtract 40°F (lowest outdoor ambient temperature for the  
geographical location) from 70°F (inside design temperature  
of the unit) for a difference of 30°F. Multiply 184 by 30 for a  
5500 BTU/Hr. total heat loss for the calculated space.  
The BTU/Hr. per °F temperature difference is the 70°F  
inside winter designed temperature minus the lowest outdoor  
ambient winter temperature of the area where the unit is  
installed. This temperature difference is used as the multiplier  
when calculating the heat loss.  
On the graph, plot the base point (70°) and a point on the  
40°F line where it intersects with the 5500 BTU/Hr. line on  
the left scale. Draw a straight line from the base point 70  
through the point plotted at 40°F. This is the total heat loss  
line.  
The graph shows the following:  
Knowing that we have a 5500 BTU/Hr. heat loss, and  
we expect that our heat pump will maintain a 70°F inside  
temperature at 40°F outdoor ambient, we plot the selected  
unit capacity BTU/Hr. of the unit between 35° and 60° on the  
graph and draw a straight line between these points. Where  
the total heat loss line and the unit capacity line intersect,  
read down to the outdoor ambient temperature scale and  
find that this unit will deliver the required BTU/Hr. capacity  
to approximately 30°F.  
Left Hand Scale  
Unit capacity BTU/Hr. or heat loss  
BTU/Hr.  
Bottom Scale  
Outdoor ambient temperature, base  
point.  
Heat Pump Model  
Balance Point  
BTU/Hr. capacity heat pump will  
deliver at outdoor temperatures.  
Maximum BTU/Hr. heat pump  
will deliver at indicated ambient  
temperature.  
41  
HEATING LOAD FORM  
FRIEDRICH ROOM UNIT HEAT PUMPS  
BTU/HR PER  
WALLS: (Linear Feet)  
2” Insulation  
°F TEMP. DIFFERENCE  
Lin. Ft. x 1.6  
Average  
Lin. Ft. x 2.6  
WINDOWS & DOORS (Area, sq. ft.)  
Single Glass:  
Sq. Ft. x 1.13  
Sq. Ft. x 0.61  
Double Glass:  
INFILTRATION - WINDOWS & DOORS: AVG.  
Lin. Ft. x 1.0  
Lin. Ft. x 2.0  
Loose  
CEILING: (Area, Sq. Ft.)  
Insulated (6”)  
Sq. Ft. x 0.07  
Sq. Ft. x 0.10  
Sq. Ft. x 0.10  
Sq. Ft. x 0.20  
Sq. Ft. x 0.33  
Insulated (2”)  
Built-up Roof (2” insulated  
Built-up Roof (1/2” insulated)  
No Insulation  
FLOOR: (Area, Sq. Ft.)  
Above Vented Crawl space  
Insulated (1:)  
Sq. Ft. x 0.20  
Sq. Ft. x 0.50  
Uninsulated  
* Slab on Ground  
1” Perimeter insulation  
* Based on Linear Feet of outside wall  
Lin. Ft. x 1.70  
Lin. Ft. x 1.00  
TOTAL HEAT LOSS PER °F BTU/HR/°F  
Multiply total BTU/HR/°F X 30 and plot on the graph below at 40°F. Draw a straight line from  
the 70 base point thru the point plotted at 40°F. The intersection of this heat loss line with the  
unit capacity line represents the winter design heating load.  
42  
Friedrich Air Conditioning Company  
P.O. Box 1540  
San Antonio, TX 78295  
210.357.4400  
www.friedrich.com  
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:  
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.  
A
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  
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, Friedrich Air Conditioning Co., P.O. Box 1540, San Antonio, TX 78295-1540.  
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  
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:  
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.  
(10-08)  
43  
TECHNICAL SUPPORT  
CONTACT INFORMATION  
FRIEDRICH AIR CONDITIONING CO.  
Post Office Box 1540 · San Antonio, Texas 78295-1540  
4200 N. Pan Am Expressway · San Antonio, Texas 78218-5212  
(210) 357-4400 · 877-599-5665 x 846 · FAX (210) 357-4490  
Email: [email protected]  
www.friedrich.com  
Printed in the U.S.A.  
44  
FRIEDRICH AIR CONDITIONING CO.  
Post Office Box 1540 · San Antonio, Texas 78295-1540  
4200 N. Pan Am Expressway · San Antonio, Texas 78218-5212  
(210) 357-4400 · FAX (210) 357-4490  
www.friedrich.com  
X-Star-ServMan (4-10)  
Printed in the U.S.A.  

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