installation, start-up and
service instructions
619FNF
619FNQ
Sizes 018-03036
IN-CEILING CASSETTE
FAN COIL UNITS
Cancels: New
II 619F-18-1
4/1/06
CONTENTS
GENERAL
Page
CAUTION: This system uses Puron® refrigerant
(R-410A), which has higher pressures than R-22 and
other refrigerants. No other refrigerant may be used in
this system. All equipment must be designed to handle
R-410A refrigerant. If unsure about equipment, consult
the equipment manufacturer.
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-19
I. Step 1 — Complete Pre-Installation Checks . . . . . . 2
II. Step 2 — Locating and Mounting the Unit. . . . . . . . 6
III. Step 3 — Locating and Mounting the Room
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
CAUTION: Do not operate the unit without a filter
or with the grille removed. Damage to the unit or per-
sonal injury may result.
IV. Step 4 — Complete Refrigerant Piping
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
V. Step 5 — Make Electrical Connections . . . . . . . . . 11
INSTALLATION OPTIONS . . . . . . . . . . . . . . . . . . . . . . . .19-22
I. Fresh Air Intake . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
II. Conditioned Air Supply to Adjacent Room . . . . . . 19
III. Room Controller Configuration Setup. . . . . . . . . . 21
IV. Louver Mode Selection . . . . . . . . . . . . . . . . . . . . . . 21
V. Main Board Configuration. . . . . . . . . . . . . . . . . . . . 21
These instructions cover the installation, start-up and service
of in-ceiling cassette fan coil units. See Fig. 1.
The following accessories can be used with 619FNF, FNQ
units. See the price pages for part numbers and additional
information for the following accessories:
• photocatalytic and electrostatic filter with mount
• air supply outlet obstruction kit
• wired room controller
• room controller wiring kit for multiple units
• zone manager kit for multiple units
• zone manager
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22,23
SERVICE AND MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . 23
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . .23,24
SAFETY CONSIDERATIONS
• infrared remote kit
Installing and servicing air-conditioning equipment can be
hazardous due to system pressure and electrical components.
Only trained and qualified service personnel should install or
service air-conditioning equipment.
Untrained personnel can perform basic maintenance, such as
cleaning and replacing filters. All other operations should be
performed by trained service personnel. When working on air
conditioning equipment, observe safety precautions in litera-
ture, tags, and labels attached to unit.
Follow all safety codes. Wear safety glasses and work gloves.
Use quenching cloth for brazing operations. Have fire extin-
guisher available. Read these instructions thoroughly. Con-
sult local building codes and the National Electrical Code
(NEC) for special installation requirements.
WARNING: Before installing or servicing system,
always turn off main power to system. There may be
more than one disconnect switch. Turn off accessory
heater power if applicable. Electrical shock can cause
serious personal injury.
Fig. 1 — 619FNF, FNQ Unit
1?10-5/8?(?575)
1' -10-5/8"(575)
3/8"(9)
2"(52)
Ø 2-3/14" (70)
0
5
1
(
1 -5/16"(49)
2-13/64"(56)
"
2
3
/
9
2
-
5
Ø
)
2'-4-11/32"(720)
1'-9-21/32"(550)
Supply air
Supply air
Return air
619FNF018
Ø1"(25)
2
"
(50)
1-7/8"(47)
2'-8-1/2"(825)
2'-8-1/2"(825)
1 -31/32"
(50)
)
0
11-57/64"
(302)
5
1
(
"
2
3
/
9
2
-
5
Ø
Supply air
Supply air
Return air
1'-11-7/16"(595)
619FNF024, 03036 / 619FNQ01824, 03036
)
0
5
1
(
"
2
/
9
2
-
5
Ø3-15/16"
(100)
2
-
5
/
8
"
(
6
6
7
)
/
8
"
(
4
8
)
)
9
4
(
"
6
1
/
5
1
-
1
NOTE: Dimensions in ( ) are in mm.
Fig. 2 — Unit Dimensions
—3—
Table 4A — 619FNF Physical Data
018
SYSTEM SIZE
NOMINAL CAPACITY (Btuh)
OPERATING WEIGHT (lb)
SEER
024
030
29,000
95
036
36,400
95
17,000
49
23,600
91
13
REFRIGERANT*
Control (Cooling)
R-410A
AccuRator Control
INDOOR FAN
Direct Drive Centrifugal
Rpm/Cfm High
1000/470
890/420
730/340
120
440/690
660/910
550/760
470/670
210
660/910
550/760
470/670
210
Rpm/Cfm Medium
Rpm/Cfm Low
360/560
300/470
110
Motor Watts
Blowers Quantity...Size (in.)
1...11.1
INDOOR COIL
Face Area (sq ft)
No. of Rows
Fins/in.
Copper Tube, Aluminum Fin
3.2
2
22
5
4.8
2
4.6
3
4.6
3
18
10
18
6
18
10
Circuits
FILTERS
Quantity...Size (in.)
Cleanable
1...17 x 16
AIRSWEEP
Horizontal
OPERATING LIMITS
Cooling (Min/Max)
Auto/Preset
55 F/125 F
CONTROLS
Integrated Microprocessor
Remote Controller Options
Diagnostics
Wireless, CRC
Yes
Defrost Method
Timer Mode
Warm Start Feature
Test Mode
Freeze Protection
Dehumidification Mode
Fan Mode
Auto Changeover
Auto Restart
Control Voltage
System Voltage
Demand Defrost
Yes
Yes
Yes
Yes
Yes
High/Medium/Low/Auto
Yes
Yes
24
208/230
REFRIGERANT LINES
Connection Type
Flare
Flare
Flare
Flare
3
3
3
3
Mixed-Phase Line (in.) OD
Vapor Line (in.) OD
/
/
/
/
8
8
8
8
5
5
3
3
/
/
/
/
8
8
4
4
Max Length (ft)
Max Lift (Fan Coil Above) (ft)
Max Lift (Fan Coil Below) (ft)
200
60
200
60
200
60
200
60
60
60
60
60
CONDENSATE DRAIN SIZE (in.)
1
1
1
1
LEGEND
CRC — Carrier Room Controller
SEER — Seasonal Energy Efficiency Ratio
*See Table 3 for factory charge and additional field charge requirements.
—4—
Table 4B — 619FNQ Physical Data
018
SYSTEM SIZE
024
030
036
NOMINAL CAPACITY (Btuh)
Heat Pump
Cooling
17,900
16,800
17,000
22,600
20,800
22,600
29,200
27,400
29,000
33,400
32,400
36,000
Heating
Cooling with Electric Heat
SEER
13
HSPF
7.7
OPERATING WEIGHT (lb)
91
91
95
95
REFRIGERANT*
Control (Cooling)
Control (Heating)
R-410A
AccuRator Control
AccuRator Control
INDOOR FAN
Direct Drive Centrifugal
Rpm/Cfm High
440/690
360/560
300/470
110
440/690
660/910
550/760
470/670
210
660/910
550/760
470/670
210
Rpm/Cfm Medium
Rpm/Cfm Low
360/560
300/470
110
Motor Watts
Blowers Quantity...Size (in.)
1...18
INDOOR COIL
Face Area (sq ft)
No. of Rows
Fins/in.
Copper Tube, Aluminum Fin
4.8
2
18
6
4.8
2
4.6
3
4.6
3
18
10
18
6
18
10
Circuits
FILTERS
Quantity...Size (in.)
Cleanable
1...24 x 235/16
AIRSWEEP
Horizontal
Auto/Preset
OPERATING LIMITS
Heating (Min/Max)
Cooling (Min/Max)
15 F/75 F
55 F/125 F
CONTROLS
Integrated Microprocessor
Remote Controller Options
Diagnostics
Wireless CRC
Yes
Defrost Method
Timer Mode
Warm Start Feature
Test Mode
Freeze Protection
Dehumidification Mode
Fan Mode
Auto Changeover
Auto Restart
Control Voltage
System Voltage
Demand Defrost
Yes
Yes
Yes
Yes
Yes
High/Medium/Low/Auto
Yes
Yes
24
208/230
REFRIGERANT LINES
Connection Type
Flare
Flare
Flare
Flare
3
3
3
3
Mixed-Phase Line (in.) OD
Vapor Line (in.) OD
/
/
/
/
8
8
8
8
5
5
3
3
/
/
/
/
8
8
4
4
Max Length (ft)
Max Lift (Fan Coil Above) (ft)
Max Lift (Fan Coil Below) (ft)
200
60
200
60
200
60
200
60
60
60
60
60
CONDENSATE DRAIN SIZE (in.)
1
1
1
1
LEGEND
CRC — Carrier Room Controller
HSPF — Heating Seasonal Performance Factor
SEER — Seasonal Energy Efficiency Ratio
*See Table 3 for factory charge and additional field charge requirements.
—5—
II. STEP 2 — LOCATING AND MOUNTING THE UNIT
A. Locating the Unit
cable (see Fig. 2 for dimensions). The cardboard template
(supplied with the unit) may be used as a guide. Depending
on the type of ceiling, the hangers can be fixed as shown in
Fig. 5.
Install the unit as centrally as possible in the room. The air-
flow direction can be controlled by the remote control (where
used) or automatically, according to the unit operating mode
(cooling or heating). Controlling the airflow automatically
will ensure optimum distribution of the air in the room.
Once the threaded hangers have been positioned, do not
tighten the nuts. Insert the washers as shown in Fig. 5. First
position the refrigerant lines, which will be connected in the
Complete Refrigerant Piping Connections section. Remove
the “T” bar in the ceiling to facilitate installation. See Fig. 6.
In Cooling mode, the louvers should be positioned so that the
air is directed towards the ceiling. Refer to Fig. 3. In Heating
mode, the louvers should be positioned so that the air is
directed toward the floor to prevent layers of hot air forming
close to the ceiling. Refer to Fig. 3. The louvers will be auto-
matically positioned when the louvers are set to Automatic
mode. Alternatively, the louvers can be placed in intermedi-
ate positions (with infrared remote accessory kit only) or
allowed to move continuously (Swing mode).
Carefully lift the unit (without the frame) using the four sus-
pension brackets (or the four corners), and insert it into the
false ceiling. If the “T” bar cannot be removed from the ceil-
ing the unit may need to be tilted. See Fig. 7.
NOTE: Tilting the unit may only be carried out with false
ceilings with a minimum height of 11 ft-13/16 inches.
Align and level the unit by adjusting the nuts and locknuts
on the threaded hangers, maintaining a distance of 1 in. to
13/16 in. between the sheet metal body and the underside of
the false ceiling. See Fig. 8. Reposition the “T” bar and align
the unit in relation to the bar by tightening the nuts and
locknuts. After connection of the condensate drain line and
the refrigerant lines, carry out a final check to make sure
that the unit is level.
In order to allow easy and rapid installation and mainte-
nance, ensure that the unit is mounted in a location that is
easily accessible.
Restricting Air Outlets
A maximum of two air outlets can be restricted at one time.
See Fig. 3. The air supply outlet obstruction accessory kit
can be used to obstruct air outlets. Contact your local dealer
for more information.
Drilling the Hole for Connection Pipes in the External Wall
After positioning the units and determining the connection
position, drill a 23/4 in. hole in the wall. The same hole can be
used as a condensate drain pipe conduit. The hole should
B. Mounting the Unit
Use a stacker to lift the unit to the installation location.
Refer to Fig. 4. If the mounting location is in a plaster board
ceiling, the maximum dimensions of the unit housing cutout
must not exceed 2 ft, 2 in. square for 619FNF018 units and
2 ft, 11 in. square for 619FNF024, 03036 and 619FNQ01824,
03036 units.
3
3
have a /16 in. to /8 in. slope toward the outside. Refer to
Fig. 9. Insert the plastic conduit. Pass the power connection
cables through the conduit. The power connection cables will
be connected in the Make Electrical Connections section.
Running the Condensate Drain Piping
NOTE: In rooms with high humidity, brackets should be
insulated using self-adhesive insulation.
To ensure correct condensate water flow, the drain pipe
should have a gradient of 2% without obstructions. Addition-
ally, a trap of at least 2 in. depth should be made to prevent
unpleasant odors from reaching the room.
Mark the position of the hangers, refrigerant lines and con-
densate drain pipe, power supply cables and remote control
Max. 2 louvers closed
Heat pump: louver position for correct airflow.
Cooling: louver position for correct airflow.
Fig. 3 — Louver Positioning
—6—
Spirit
Level
False
Ceiling
1“ to 1-3/16”
Fig. 4 — Positioning Unit
Fig. 8 — Align and Level the Unit
Outdoor
3/16"÷3/8"
(5÷10 mm)
Indoor
Nut
Washer
Threaded hangers
Washers
Fig. 9 — Drilling for Connections
Threaded hangers
Wooden frame
Nut
Washer
Nut
The condensate may be discharged at a maximum height of
77/8 in. above the unit, as long as the ascending tube is verti-
cal and aligned with the drainage flange.
Nut
Fig. 5 — Attaching Hangers to Ceiling
If it is necessary to discharge the condensate from a level
above 77/8 in., install an auxiliary water discharge pump and
float valve. A float valve is recommended to stop the com-
pressor if there is a fault at the auxiliary pump.
The condensate pipe must be insulated with condensation
proof material such as polyurethane, propylene or neoprene
of 3/16 in. to 3/8 in. thickness. See Fig. 10.
Threaded hangers
CAUTION: The drain tube extension must be
securely fastened to the condensate drain. Failure to
do so could result in condensate water dripping on to
the floor, which could cause personal injury.
"T" bar
(to be removed)
Fig. 6 — Threaded Hangers and T Bar
NOTE: If more than one unit is installed in the room, the
drain system can be designed as shown in Fig. 10.
Installing the Grille and Frame Assembly
Carefully unpack the assembly and check for damage sus-
tained in transport. Attach the assembly to the unit by using
the two hooks. See Fig. 11. Tighten the four screws, link the
electrical connectors and insert the wires in the cable clamp.
Use the screws supplied to fix the frame in to position. See
Fig. 12.
Threaded Hangers
Threaded Hangers
T-Bar
Ensure that the frame is not distorted by excessive tighten-
ing, that it is aligned with the false ceiling and that there is
a seal between the air inlet and outlet. See Fig. 13. Gasket
“A” prevents return air from mixing with the supply air and
gasket “B” prevents the supply air from leaking into the ceil-
ing void. Once the unit is mounted in the ceiling, the gap
between the unit frame and the false ceiling must not be
more than 3/16 in. wide.
T-Bar
T-Bar
Supension Brackets
Supension Brackets
Fig. 7 — Positioning Unit in Ceiling
—7—
2%
2” (50 mm)
A. Gasket "A"
B. Gasket "B"
max.
7-7/8”(200 mm)
A
AIR
B
Fig. 10 — Condensate Drain Pipe
Fig. 13 — Gasket Location
Frame support brackets
III. STEP 3 — LOCATING AND MOUNTING THE ROOM
CONTROLLER
WARNING: Electrical shock can cause personal
injury and death. Shut off all power to this equipment
during installation. There may be more than one dis-
connect switch. Tag all disconnect locations to alert
others not to restore power until work is completed.
A. Locating the Room Controller
See Fig. 14 for room controller dimensions. If the air sensor
in the room controller is going to be used, the room controller
should be located by considering the following:
Fig. 11 — Attach Frame Assembly
• Position controller with a minimum clearance of 5 ft from
the floor.
• Locate the unit in the same area as the fan coil unit; pref-
erably on an inside partitioning wall.
• Locate on a section of the wall without pipes or ductwork.
• Do not locate close to a window, on an outside wall, or
next to a door leading to the outside.
• Do not locate where the controller is exposed to direct
light and heat from a lamp, sun, fireplace, or other tem-
perature-radiating object that may cause a false reading.
• Do not locate close to, or in direct airflow of, a heating or
cooling supply.
• Do not locate in areas with poor circulation, such as
behind a door or in an alcove.
Safety cord
Cable clamp
Power connection
cables from unit
Power connection
cables from frame
Frame support
screws
NOTE: Do not exceed 500 ft of network wiring when mount-
Fig. 12 — Fix Frame in Position
ing the room controller.
—8—
3/4"(20mm)
4-1/4" (108mm)
Fig. 14 — Room Controller Dimensions
B. Mounting the Room Controller (Fig. 15-17)
Unscrew the side fixing screw. Open the room controller rear
mounting base to expose the mounting holes. The base can
be removed to simplify mounting (snap apart carefully at
hinge to separate mounting base from the rest of the room
controller). Route the room controller wires through the
large hole in the mounting base. Level the mounting base
against the wall (for aesthetic value only, as the room con-
troller does not need to be level for proper operation) and
P
G
C
mark the wall through the two mounting holes. Drill two
Connection Cable
Fig. 16 — Locating the Connection Cable
3
/
16 in. mounting holes in the wall where marked. Secure the
mounting base correctly (UP) to the wall with the two screws
and two anchors provided, (additional anchoring holes are
available for more secure mounting if necessary) making
sure all wires extend through the hole in the mounting base.
Adjust the length and routing of each wire to reach the
proper terminal in the connector block on the mounting base,
with 1/4 in. of extra wire (strip only 1/4 in. of insulation from
each wire to prevent adjacent wires from shorting together
when connected).
Match and connect equipment wires to proper terminals in
the connector block. Both power and communication wires
must be connected correctly for proper room controller
operation.
Push any excess wire into the wall and against mounting
base. If the air sensor is being used on the room controller,
seal the hole in the wall to prevent air leaks. Leaks can
affect sensor operation.
P
G
C
Push the room controller snap hinge to the base and tighten
the side fixing screw.
Connection Cable
Fig. 17 — Connecting the Room Controller
Mounting screws
P
G
C
Fig. 15 — Mounting the Room Controller
—9—
IV. STEP
CONNECTIONS
4
—
COMPLETE REFRIGERANT PIPING
If either refrigerant tubing or indoor coil is exposed to the
atmosphere, the system must be evacuated following good
refrigeration practices.
IMPORTANT: During unit installation make the refrigerant
connections first and then the electrical connections. If the
unit is uninstalled, disconnect the electrical cables first and
then the refrigerant connections. Refer to the outdoor unit
installation instructions for tube sizing and limitations.
Use field-supplied refrigerant grade piping designed for use
with R-410A refrigerant.
A. Flaring the Ends of Pipes
Remove the protective caps from the copper pipe ends. Hold-
ing the tube downward, cut the extreme end off, removing
any copper shavings with a deburring blade. Remove the
flare nuts from the “FLARE” connection body of the indoor
unit and insert them into the pipes. Make the flare to the
pipe end with the proper flaring tool. The flare end must not
have any burrs or imperfections. The length of the flared
walls must be uniform. See Fig. 18 and 19.
Fig. 18 — Removing Burrs
Lubricate the end of pipe and the thread of the flare connec-
tion with anti-freeze oil. Tighten by hand and then use two
wrenches to tighten all connections fully, applying the tight-
ening torque shown in Table 5. Refer to Fig. 20.
L
Table 5 — Tightening Torque
L
TUBE DIAMETER
(in.)
TORQUE
(ft-lb)
3/8 in.
5/8 in.
3/4 in.
31
48
74
B. Piping Connection to the Unit
Use two wrenches to tighten all connections.
CAUTION: Insufficient tightening torque could
cause a refrigerant leak from the connection. Excessive
tightening torque will damage the pipe flare.
Fig. 19 — Flared Walls are Equal
Once all connections have been completed, check for leaks
using soapy water. If no leaks were found, wrap connections
with anti-condensate insulation and tighten with tape, with-
out exerting excessive pressure on the insulation. Repair and
cover any possible cracks in the insulation.
1
CAUTION: DO NOT BURY MORE THAN 36 IN.
OF REFRIGERANT PIPE IN THE GROUND. If any
section of pipe is buried, there must be a 6-in. vertical
rise to the valve connections on the outdoor unit. If
more than the recommended length is buried, refriger-
ant may migrate to cooler, buried section during
extended periods of system shutdown. This causes
refrigerant slugging and could possibly damage the
compressor at start-up.
3
Adjustable wrench or torque wrench
Outdoor end
2
Indoor end
Fig. 20 — Tightening Connections
—10—
V. STEP 5 — MAKE ELECTRICAL CONNECTIONS
unit, readily accessible, but out of reach of children. Provi-
sion for locking the switch open (off) is advisable to prevent
power from being turned on while unit is being serviced. Dis-
connect switch, fuses, and field wiring must comply with the
NEC and local code requirements. Use copper wire only
between the disconnect switch and unit. Use minimum 60 C
wire for the field power connection.
WARNING: Unit cabinet must have an uninter-
rupted, unbroken electrical ground to minimize the
possibility of personal injury if an electrical fault
should occur. This ground may consist of electrical
wire connected to unit ground lug in control compart-
ment, or conduit approved for electrical ground when
installed in accordance with NEC, and local electrical
codes. Failure to follow this warning could result in the
installer being liable for the personal injury of others.
Remove the external box cover. Route the low voltage wires
from the outdoor unit to the indoor unit:
7
1. Place wiring through /8 in. knockouts on the left or
right hand side of external control box (low voltage
side).
CAUTION: Unit failure as a result of operation on
improper line voltage or excessive phase imbalance
constitutes abuse and may cause damage to electrical
components. Such operation would invalidate any
applicable Bryant warranty.
2. Connect the R and Y wires to the 2 pin terminal block
for cooling only units (619FNF) and heat pump units
(619FNQ) that are matched to 538ENF outdoor units.
3. Connect the R, Y, O, G, DT, A, and B wires to the
(PGB-1) 1 terminal for 619FNQ indoor units matched
with 538QNF outdoor units.
WARNING: Electrical shock can cause personal
injury and death. Shut off all power to this equipment
during installation. There may be more than one dis-
connect switch. Tag all disconnect locations to alert
others not to restore power until work is completed.
Route the line power leads from the indoor disconnect to the
fan coil unit.
7
1. Place wiring through /8 in. or 11/8 in. knockouts on
the left and on the right hand side of external control
box (high voltage side).
2. Connect L1 to the black wire and L2 to the red wire
using wire nuts and fix the ground wire between the
2 washers.
See Tables 6A and 6B for electrical information.
A. Units With Electric Heater
The unit is equipped with two thermostats: one with auto-
matic reset and one with manual (electric) reset that can be
reactivated by switching the power supply off and then
back on.
See Fig. 27 for a view of the internal control panel. The inter-
nal control panel can be accessed by opening the grille and
removing the metal cover attached by four screws.
NOTE: The internal control panel does not need to be
accessed during the installation process unless there is a
need for service.
B. Power Wiring (Fig. 21-26)
The unit is factory wired for voltage shown on nameplate.
Provide adequate, fused disconnect switch within sight from
Table 6A — 619FNF Fan Coil Electrical Data
VOLTAGE
RANGE*
FAN
POWER
MIN WIRE
SIZE
AWG
SYSTEM
SIZE
CONDENSATE
PUMP FLA
LOUVER
MOTOR FLA
V-PH-Hz
Motor Power
(Watts)
Min
Max
FLA
MCA
MOCP
018
024
030
036
208/230-1-60
208/230-1-60
208/230-1-60
208/230-1-60
187
187
187
187
253
253
253
253
0.55
0.50
0.95
0.95
120
110
210
210
0.06
0.06
0.06
0.06
0.01
0.01
0.01
0.01
0.8
0.7
1.3
1.3
15
15
15
15
14
14
14
14
LEGEND
AWG — American Wire Gage
FLA — Full Load Amps
MCA — Minimum Circuit Amps per NEC Section 430-24
MOCP — Maximum Overcurrent Protection
NEC — National Electrical Code
*Permissible limits of the voltage range at which unit will operate
satisfactorily.
NOTE: In compliance with NEC requirements for multimotor and combina-
tion load equipment (refer to NEC Articles 430 and 440), the overcurrent pro-
tective device for the unit shall be fuse or equipped with a breaker.
Table 6B — 619FNQ Fan Coil Electrical Data
VOLTAGE
RANGE*
ELECTRIC
HEATERS
MIN
WIRE
SIZE
AWG
FAN
POWER
SYSTEM
SIZE
CONDENSATE
PUMP FLA
LOUVER
MOTOR FLA
V-PH-Hz
Motor Power
(Watts)
Min
Max
FLA
kW
FLA
MCA MOCP
018
024
030
036
208/230-1-60
208/230-1-60
208/230-1-60
208/230-1-60
187
187
187
187
253
253
253
253
0.50
0.50
0.95
0.95
110.0
110.0
210.0
210.0
0.06
0.06
0.06
0.06
0.01
0.01
0.01
0.01
3
3
3
3
12.5
12.5
12.5
12.5
16.3
16.3
16.9
16.9
20
20
20
20
12
12
12
12
LEGEND
AWG — American Wire Gage
FLA — Full Load Amps
MCA — Minimum Circuit Amps per NEC Section 430-24
MOCP — Maximum Overcurrent Protection
NEC — National Electrical Code
*Permissible limits of the voltage range at which unit will operate
satisfactorily.
NOTE: In compliance with NEC requirements for multimotor and combina-
tion load equipment (refer to NEC Articles 430 and 440), the overcurrent pro-
tective device for the unit shall be fuse or equipped with a breaker.
—11—
Room Controller
Connections
Low
Voltage
Outdoor Unit
Connections
Power
Connections
Ground
Connection
High
Voltage
Fig. 21 — 619FNF Unit Matched to 538ENF Outdoor Unit — Wiring Connection
(Cooling Only System)
—12—
Room Controller
Connections
Low
Voltage
Outdoor Unit
Connections
Power
Connections
Ground
Connection
High
Voltage
Fig. 22 — 619FNQ Unit Matched to 538ENF Outdoor Unit — Wiring Connection
(Cooling with Electric Heat System)
—13—
Room Controller
Connections
Low
Voltage
Outdoor Unit
Connections
Power
Connections
Ground
Connection
High
Voltage
Fig. 23 — 619FNQ Unit Matched to 538QNF Outdoor Unit — Wiring Connection
(Heat Pump System)
—14—
DISPLAY
TM-COIL
TM-AIR
MODULAR "D"
CONTROL 1PCB
BARE COPPER
TO UNIT DISCONNECT
(USE CABLE PROVIDED)
EQUIP. GND
619FNF GLOBAL CASSETTE
538ENF OUTDOOR CONDENSER
NOTE 7
EQUIP GND
208/230V
1PH
(SEE NOTE 9)
TO OUTDOOR
UNIT DISCONNECT
TO CASSETTE
TO CASSETTE
NOTE 8
NOTES:
LEGEND
1. If any of the original wire furnished must be replaced, it must be
replaced with Type 90° C wire or its equivalent.
2. Wire in accordance with National Electrical Code (NEC) and local
codes.
1PCB
—
Main Control Printed
OFM
OL
S
—
—
—
—
—
Outdoor Fan Motor
Overload
Emergency
Terminal Block
Sensor
Circuit Board
2PCB
C
CAP
CH
—
—
—
—
—
—
—
—
—
Display Board
Contactor
3. Compressor and fan motors are protected by internal thermal
overloads.
TB
TM
Capacitor
Crankcase Heater
Crankcase Heater Switch
Compressor
4. Indoor unit transformer has internal 2A thermal fuse on the primary
side.
5. Infrared (IR) connection to be inserted on “J5” (replace the actual
factory-installed “CRC” connector) for IR option.
6. Terminal strip for Carrier Room Controller (CRC) connection.
7. Compressor crankcase heater installed on 538QNF035 and
538QNF030 only.
8. Outdoor unit transformer is factory wired for 230 v. For 208 v move
the black wire to the 208-v tap.
9. Use minimum 60° C wire for the field power wiring.
TRAN — Transformer
CHS
COMP
CRC
DP
Terminal (Marked)
Carrier Room Controller
Drain Pump
Equipment Ground
Terminal (Unmarked)
Splice
EQUIP.
GND
FC
Terminal Block
—
—
—
—
—
—
—
—
Fan Capacitor
Float Switch
Ground
High Pressure Switch
Indoor Fan Motor
Infrared
Indoor Test Point
Liquid Low Pressure
Switch
Louver Motor
Louver Micro Switch
FS
Factory Wiring
GND
HPS
IFM
Field Control Wiring
Field Power Wiring
Accessory or Optional Wiring
Plug Connector
THERMISTOR EQUIVALENCE
IR
TEMPERATURE
RESISTANCE
Ω
ITP
°F
95
72
32
°C
35
22
0
LLPS
6,500
11,400
32,500
LM
LMS
—
—
NOTE: All thermistors are identical.
Fig. 24 — 619FNF/538ENF Cooling Only System Wiring Diagram
—15—
DISPLAY
TM-COIL
TM-AIR
MODULAR "D"
CONTROL 1PCB
BARE COPPER
TO UNIT DISCONNECT
(USE CABLE PROVIDED)
EQUIP. GND
619FNQ GLOBAL CASSETTE
538ENF OUTDOOR CONDENSER
EQUIP GND
208/230V
1PH
NOTE 7
(SEE NOTE 9)
TO OUTDOOR
UNIT DISCONNECT
TO CASSETTE
TO CASSETTE
NOTE 8
NOTES:
LEGEND
1. If any of the original wire furnished must be replaced, it must be
replaced with Type 90° C wire or its equivalent.
2. Wire in accordance with National Electrical Code (NEC) and local
codes.
1PCB
—
Main Control Printed
Circuit Board
LMS
OFM
OL
S
—
—
—
—
—
—
—
Louver Micro Switch
Outdoor Fan Motor
Overload
2PCB
3PCB
—
—
Display Board
Printed Circuit Board for
Electric Heat
Contactor
Capacitor
3. Compressor and fan motors are protected by internal thermal
overloads.
Emergency
ST
Safety Thermostat
Terminal Block
Sensor
C
CAP
CH
CHS
COMP
CRC
DP
—
—
—
—
—
—
—
—
—
4. Indoor unit transformer has internal 2A thermal fuse on the primary
side.
5. Infrared (IR) connection to be inserted on “J5” (replace the actual
factory-installed “CRC” connector) for IR control.
6. Terminal strip for Carrier Room Controller (CRC) connection.
7. Compressor crankcase heater installed on 538QNF035 and
538QNF030 only.
8. Outdoor unit transformer is factory wired for 230 v. For 208 v move
the black wire to the 208-v tap.
9. Use minimum 60° C wire for the field power wiring.
TB
TM
Crankcase Heater
Crankcase Heater Switch
Compressor
TRAN — Transformer
Terminal (Marked)
Carrier Room Controller
Drain Pump
Terminal (Unmarked)
Splice
E-HTR
EQUIP.
GND
FC
Electric Heater
Equipment Ground
Terminal Block
—
—
—
—
—
—
—
—
Fan Capacitor
Float Switch
Ground
High Pressure Switch
Indoor Fan Motor
Infrared
Factory Wiring
THERMISTOR EQUIVALENCE
FS
GND.
HPS
IFM
TEMPERATURE
RESISTANCE
Ω
Field Control Wiring
Field Power Wiring
Accessory or Optional Wiring
Plug Connector
°F
95
72
32
°C
35
22
0
6,500
11,400
32,500
IR
ITP
Indoor Test Point
Liquid Low Pressure
Switch
LLPS
NOTE: All thermistors are identical.
LM
—
Louver Motor
Fig. 25 — 619FNQ/538ENF Heat/Cool System Wiring Diagram with Electric Heaters
—16—
DISPLAY
TM-COIL
TM-AIR
OUTDR DEFROST
MODULAR "D"
CONTROL 1PCB
BARE COPPER
TO UNIT DISCONNECT
(USE CABLE PROVIDED)
EQUIP. GND
619FNQ GLOBAL CASSETTE
538QNF OUTDOOR CONDENSER
208/230V
1PH
EQUIP GND
NOTE 7
(SEE NOTE 9)
TO OUTDOOR
UNIT DISCONNECT
TO CASSETTE
TO CASSETTE
TO CASSETTE
TO CASSETTE
TO CASSETTE
TO CASSETTE
TO CASSETTE
TO CASSETTE
NOTE 8
LEGEND
NOTES:
1. If any of the original wire furnished must be replaced, it must be
replaced with Type 90° C wire or its equivalent.
2. Wire in accordance with National Electrical Code (NEC) and local
codes.
1PCB
—
Main Control Printed
Circuit Board
OAS
—
—
—
—
—
—
—
—
—
Outdoor Air Sensor
Outdoor Fan Motor
Outdoor Fan Relay
Overload
OFM
OFR
OL
2PCB
3PCB
—
—
Display Board
Printed Circuit Board for
Electric Heat
3. Compressor and fan motors are protected by internal thermal
overloads.
RVS
S
Reversing Valve Solenoid
Emergency
C
CAP
CH
—
—
—
—
—
—
—
—
—
Contactor
4. Indoor unit transformer has internal 2A thermal fuse on the primary
side.
5. Infrared (IR) connection to be inserted on “J5” (replace the actual
factory-installed “CRC” connector) for IR option.
6. Terminal strip for Carrier Room Controller (CRC) connection.
7. Compressor crankcase heater installed on 538QNF035 and
538QNF030 only.
8. Outdoor unit transformer is factory wired for 230 v. For 208 v move the
black wire to the 208-v tap.
9. Use minimum 60° C wire for the field power wiring.
Capacitor
ST
Safety Thermostat
Terminal Block
Sensor
Crankcase Heater
TB
CHS
COMP
CRC
DFT
DP
Crankcase Heater Switch
Compressor
TM
TRAN — Transformer
Carrier Room Controller
Defrost Thermostat
Drain Pump
Terminal (Marked)
Terminal (Unmarked)
Splice
E-HTR
Electric Heater
EQUIP. — Equipment Ground
GND
Terminal Block
FC
—
—
—
—
—
—
—
—
—
—
Fan Capacitor
THERMISTOR EQUIVALENCE
FS
Float Switch
TEMPERATURE
RESISTANCE
Ω
Factory Wiring
GND
HPS
IFM
IR
Ground
°F
95
72
32
°C
35
22
0
High Pressure Switch
Indoor Fan Motor
Infrared
Field Control Wiring
Field Power Wiring
Accessory or Optional Wiring
Plug Connector
6,500
11,400
32,500
ITP
Indoor Test Point
Liquid Low Pressure Switch
Louver Motor
LLPS
LM
NOTE: All thermistors are identical.
LMS
Louver Micro Switch
Fig. 26 — 619FNQ/538QNF Heat Pump System Wiring Diagram with Electric Heaters
—17—
CA
CLR
CG
CP
CV
C
G
CV
CP
CLR
CA
INTERNAL CONTROL PANEL
619FNF018
INTERNAL CONTROL PANEL
619FNF024, 03036
619FNQ01824, 03036
Capacitor
GMC board
Electric heater board
(only on models with electric heater)
Transformer
Holes for fixing panel in position
Emergency push-button
CV
Fan connector
LED/RECEIVER connector
Float connector
Pump connector
Louver connector
CLR
CG
CP
CA
Fig. 27 — Internal Control Panel
—18—
C. Wiring the Room Controller
INSTALLATION OPTIONS
The room controller is capable of controlling from 1 to 6 fan
coil units. The total run length of the wire connecting the
room controller to the fan coil units should be kept to under
500 feet. Wire the room controller to the unit using daisy
chain wiring. See Fig. 28. The room controller connects to
the receiver board connection on the electronic board inside
the unit.
The 619FNF, FNQ units can be used to cool an adjacent
room or for fresh-air ventilation. Plan the installation care-
fully. Measure carefully and follow acceptable building prac-
tices and the National Electric Code (NEC).
I. FRESH AIR INTAKE
1. Using Fig. 30, locate and remove the factory-installed
insulation from the side of the unit where the
pre-punched knockouts are located.
Wiring the Power Connection to the Room Controller
The thermostat will be powered by unregulated nominal
12.5 volts DC (10V min to 20V max) which is provided by the
electronic board inside the unit. The power consumption will
be 50 mA 12.5 volts DC. For applications where more than
one fan coil unit is to be controlled, the fan coil unit closest to
the room controller will be the only one that supplies power
to the room controller. The control should be protected from
damage in case of accidental wiring of power, ground and
signal wiring occurs.
2. Remove the pre-punched knockouts for fresh air
intake. Refer to Fig. 30. Be careful not to damage
internal parts such as the heat exchanger coil.
3. If installing a 619FNF018 unit, install baffle. Refer to
Fig. 30.
4. Install ductwork using field-supplied, insulated flex
duct, or insulated sheet metal suitable for working
temperatures up to 140 F. Conduits can be of flexible
polyester (with spiral core) or corrugated aluminum,
externally covered with anti-condensate material
(fiberglass from 1/4 in. to 1 in. thickness).
Wiring the Room Controller to the Indoor Unit
Loosen the screws of terminals P (DC Power), G (GROUND)
and C (SIGNAL) on the indoor unit and room controller
terminal blocks. Refer to Fig. 29 and connect the indoor unit
terminal block to the room controller terminal block.
5. Use Fig. 31 to determine the allowable static pres-
sure loss for the ductwork airflow. The ductwork
design must not exceed this value or the job airflow
requirements will not be met.
6. Use a field-supplied fan if airflow does not meet job
requirements. The field-supplied fan motor for out-
side air intake must be controlled by a bipolar ON/
OFF switch with safety fuses.
REMOTE
FCU 1
FCU 2
FCU 3
FCU 6
IMPORTANT: Ventilated air must not exceed 10% of the total
airflow or problems with operation will result. If the venti-
lated air surpasses 10% of the total airflow, a field-supplied
primary air treatment system with separate deflectors is
recommended.
7. Install an air inlet grille with filter inspection port to
prevent dust and dirt from entering and fouling the
indoor unit heat exchanger. Filter installation also
makes the installation of a duct closing damper dur-
ing shutdown periods unnecessary.
8. All non-insulated ducts must be covered with anti-
condensate insulation (such as expanded neoprene,
1/4 in. thickness).
Fig. 28 — Room Controller Daisy Chain Wiring
(Multidrop)
II. CONDITIONED AIR SUPPLY TO ADJACENT ROOM
Diagram 1
Air supply to an adjacent room requires that the outlet corre-
sponding with the duct is closed, using the air supply outlet
obstruction accessory kit.
NOTE: The accessory kit cannot be used in units equipped
with an electric heater.
Red
Black
White
P
P
G
C
G
C
An air inlet grille must be fitted (if possible near the floor)
between the air conditioned room (where the unit is situ-
ated) and the adjacent room or, alternatively, the door must
be undercut, as shown in Fig. 30. The duct lengths can be
calculated in accordance with Fig. 30, also taking into
account the pressure drop through air diffusers and fresh air
filters.
A
B
Remote connector
(J5) 5 pins
Main electronic card
4 pins terminal block placed on external
control box
A
B
Indoor unit
Wires supplied by the installer
Terminal block in the Room Controller
Room Controller
IMPORTANT: DO NOT use active carbon or electrostatic
filter kits for ducts towards adjacent rooms.
Fig. 29 — Wiring the Room Controller to
the Indoor Unit
—19—
B
Ø A
Ø C
Ø A
Duct connection flange
Clip
1/4" (6 mm) neoprene gasket
Insulated flexible duct
Fresh air intake
Conditioned air supply to an
adjacent room
Polystyrene partition
Baffle (619FNF018 only)
Frame
619FNF024, 03036
Unit
Ø A
B
619FNF018
5-29/32"(150 mm)
4-3/4"(120 mm)
2-3/4"(70 mm)
619FNQ01824, 03036
5-29/32"(150 mm)
4-3/4"(120 mm)
Ø C
3-15/16"(100 mm)
NOTE: Dimensions in ( ) are in mm.
Air intake grille
Wall
Undercut door
Wall-fitted grille
Door-fitted grille
Fig. 30 — Installation Options
Supply air duct to adjacent room
0.18
0.16
0.14
0.12
619FNF, FNQ03036
0.1
0.08
0.06
619FNF018, 024
619FNQ01824
0.04
0.02
0
150
200
250
0
50
100
Airflow (cfm)
NOTE: When two louvers are closed, the fresh airflow towards the adjacent room is 50% higher than when
one louver is closed (with equal static external pressure).
Fig. 31 — Pressure Drop for Conditioned Air Supply to an Adjacent Room: One Louver Closed
—20—
III. ROOM CONTROLLER CONFIGURATION SETUP
C — The Room Controller will allow and display the
following modes:
To configure the room controller, press the Mode button for
5 seconds. After 5 seconds, “10” will appear. This indicates
that the user is setting the first software configuration item.
To display the value of configuration item 10, press the Mode
button again. The value of the Heat/Cool vs Cooling only
remote configuration will be displayed along with the “Set
Temp” icon to indicate that the number displayed is the con-
figuration data. Refer to Table 7 for configuration values. To
change the Heat/Cool vs Cooling only remote Configuration,
press the Up and Down buttons. To move to the next setting,
press the Mode button again and the “10” will be displayed.
Press the up button and the display will change to “11.”
Refer to Fig. 32. The Mode button will toggle the display
between the items and the configuration value. The Up and
Down buttons will change either the index or the value,
whichever is displayed at the time. Press the Fan button to
exit the Configuration Setup Mode. This mode will exit auto-
matically after 10 seconds of inactivity. Once a configuration
value is changed, the last value displayed will be the new
configuration value for the room controller.
•Off
•Fan
•Cool
•Dry
2. Configuration Item 11: Room Thermistor Override
On — Room Thermistor Override is active. Units will
be controlled to the air temperature displayed via the
Room Controller.
Of (Off) — Room Thermistor Override is not active.
All units will be controlled to the room air ther-
mistors located on the units.
3. Configuration Item 12: Celsius vs Fahrenheit
C — Temperatures will be displayed in degrees
Celsius.
F — Temperatures will be displayed in degrees
Fahrenheit.
IV. LOUVER MODE SELECTION
NOTE: The only way to abort a configuration change is to
change the value back to its original value.
To enter louver mode selection, ensure the room controller is
on and then press the Fan button for 5 seconds. After 5 sec-
onds, the selected louver setting will be displayed. Press the
up and down arrows to modify the louver setting between
swing and auto. Refer to Fig. 33. The two settings will be dis-
played as follows:
Table 7 — Room Controller Configuration Values
ITEM
10
VALUE
DESCRIPTION
Heat/Cool Remote
Cooling Only Remote
H*
C
S with Swing Louver Icon
A with Auto Louver Icon
Represents the swing louver
Represents the auto louver
Room Thermistor Override
Active.
On
Control and display room air
temperature at the room con-
troller. Room Thermistor Over-
ride Inactive. Do not display
room air temperature at the
room controller and control to
unit room air thermistor(s).
The fan icon will also be displayed in the louver mode. Press
Fan button to exit the Louver Mode selection. This mode will
exit automatically after 10 seconds of inactivity. The only
way to abort a louver change is to change the value back to
its original value.
11
Of*
Temperatures displayed in
degrees Celsius.
Temperatures displayed in
degrees Fahrenheit.
NOTE: If units are grouped to one room controller, all units
will have the same louver value. Louver Mode selection is
not available during OFF mode.
C*
F
12
V. MAIN BOARD CONFIGURATION
* Factory default.
To configure the main electronic board, push the Up and
Down arrows for 5 seconds while the room controller is off.
1. Configuration Item 10: Heat Pump vs Cooling Mode
H — The Room Controller will allow and display the
following modes:
After 5 seconds, a “20” will appear. This indicates that the
user is setting the first software configuration item. To check
the value of configuration item “20,” press the Mode button.
The value for the Heat Pump/AC Only configuration will be
displayed. To change the value, use the Up and Down
buttons. Once the desired value is selected, press the Fan
button to send that configuration data to the unit. Refer to
Table 8.
•Off
•Fan
•Auto
•Cool
•Dry
•Heat
up
Keep it pressed for
at least 5 seconds
Check the
value
Change the
value
Next
item
down
A
To check/change
the values of items
11 and 12 go back
to point A
up
down
Fig. 32 — Room Controller Configuration Steps
—21—
up
Room Controller
ON
Keep it pressed
for 5 seconds
To change
the value
Automatic
(AUTO)
down
Or
Continuous
movement
(swing)
Fig. 33 — Selecting the Louver Mode
Down button to send a message of Off mode to the unit. Ser-
vice Test mode automatically times out after 30 minutes and
the remote will operate normally.
Table 8 — Modular Platform D Unit Configuration Values
ITEM
20
VALUE
1: Heat Pump
0: AC only (indoor unit with
or without electric heaters)
COMMENT
When test mode is selected, the unit will operate as
described below:
Unit Configuration
defaults to heat pump
• The Unit Status (Green) and Timer (Yellow) LEDs blink
every 2 seconds.
• The indoor fan will operate according to user-selected
speed. If user-selected speed is Auto, the fan will run in
High speed.
• If the unit is configured as an A/C Only unit, it will oper-
ate in cool mode with demand.
• If the unit is configured as a Heat Pump unit, the louver
will operate according to user-selected position. If user
selected louver is Auto, louver operates according to auto
heat or cool louver based on operating mode.
• The unit will run in cool mode for 3 minutes, then it will
run in heat mode for 2 minutes, or until the indoor coil is
greater than 104 F. The unit will run in cool mode until
test mode is exited.
CCN Address of the unit.
Defaults to 1.
21
1-199 in increments of 1
0-199 in increments of 1
To display the hundreds,
push
.
Zone number -
Communications zone
the system is located in
Defaults to 0
22
24
To display the hundreds,
push
.
0: Start in Off mode
1: Start in last active mode
Auto Restart
Defaults to “On”
Only the current value being displayed is transmitted. Once
the Fan button is pressed, the room controller will switch to
displaying the configuration item number. To move to the
next setting, press the Mode button again and the “20” will
be displayed. Press the Up button and the display will
change to “21.” The Mode button will toggle the display
between the software configuration item number (i.e., “20,”
“21,” etc.) and the configuration value. The Up and Down
buttons will change either the item number or the value,
whichever is displayed at the time.
Any of the following will cancel the Service Test mode:
• When the unit is turned off by the controller.
• If the power is cycled during the Test Mode, the unit will
return to its normal operating mode.
• After 30 minutes of receiving the last valid test request
message.
• Fail Mode.
This mode will exit automatically after 30 seconds of
inactivity.
START-UP
The following checks should be made before system start-up.
Refer to outdoor unit Installation, Start-Up, and Service
manual for system start-up instructions and refrigerant
charging methods. Be sure to use the refrigerant charge
shown in Table 3.
NOTE: If units are grouped to one room controller, all units
will have the same configuration value.
VI. SERVICE TEST MODE
Prior to start-up, conduct the Service Test mode to ensure
the unit is ready for start-up.
1. Check condensate drainage system.
a. Remove grille and frame from the unit.
b. On the opposite side of the drain connection,
insert a water bottle up into the fan coil unit and
fill drain pan. Refer to Fig. 34. Water must flow
regularly with condensate pump energized. If
water does not, check the pipe slope or see if
there are any pipe restrictions.
There is a hidden Service Test mode that is initiated through
a combination of button presses when the remote is off. The
following buttons need to be pressed, in sequence, within
6 seconds:
1. Down arrow
2. Fan button
3. Up arrow
NOTE: The unit is equipped with a safety float
switch to deenergize the compressor if the drain
water level gets too high.
4. Fan button
5. Mode button
2. Make sure that all wiring connections are correct and
that they are tight.
Once in Service Test mode, the Service Test mode message
will be sent, and Sr will be displayed in the temperature
icons until the Down button is pressed. During Service Test
mode all the icons are off, and the only button that is active
is the Down button. To cancel Service Test mode, press the
3. Make sure that all barriers, covers, and panels are in
place.
—22—
2. Remove the air intake and distribution assembly.
Remove the condensate water in the drain pan by
pulling out the rubber drain plug and letting water
drain into a 3-gallon bucket.
CAUTION: Do not use a screw driver to pry drain
pan out of assembly. It could damage the pan.
3. Remove screws holding the drain pan. Carefully hold
the drain pan to remove it from the assembly.
4. Reinstall the drain pan using the appropriate num-
ber of screws. Center and align the metal fan inlet
orifice with the fan. Ensure the fan spins freely.
Fig. 34 — Inserting Water into Drain Pan
TROUBLESHOOTING
See Table 9 and Fig. 35 for troubleshooting information.
4. Ensure that the filters and return air grilles have
been installed and that the discharge louvers are
correctly positioned.
I. FAULT CODE
Once a failure occurs with the indoor unit in operation, the
green LED on the indoor unit flashes at intervals of 0.5 sec-
onds. The fault code is deduced from the number of times the
green LED flashes, blocking unit operation. Between one
flash cycle and the next one, a pause of 5 seconds elapses.
See Fig. 35.
CAUTION: Never operate unit without a filter or
with grille removed. Damage to the unit or personal
injury may result.
SERVICE AND MAINTENANCE
Table 9 — Fault Codes
Remove unit grille, filter, and condensate pan for cleaning,
lubricating, or replacing parts.
CODE
2
DESCRIPTION
Condensate discharge pump
Room air sensor fault
Indoor unit coil sensor fault
Filter dirty
CAUTION: To avoid personal injury or damage to
unit, do not service until all power sources are shut
down, locked out, and tagged out. Failure to do so could
result in personal injury or unit damage.
3
4
6*
7
Outdoor unit failure
I. MINIMUM MAINTENANCE
10
11
12
13
14
EEPROM corrupt
Card serial number damaged
Address or zone incomplete
Gas flow distributor corrupt
Outdoor air thermistor fault
1. Check, clean, or replace air filter each month or as
required.
2. Check cooling coil, drain pan, condensate trap, and
condensate drain pan each cooling season for cleanli-
ness. Clean as necessary.
*When code is enabled.
3. Check fan motor and wheel for cleanliness each heat-
ing and cooling season.
A. Using the Emergency Button
The Emergency button is for use by a qualified service tech-
nician only. The Emergency button is for use when the room
controller is inoperative. Use a screwdriver to press the
emergency button through the metal protection grille. See
Fig. 35.
4. Check electrical connections for tightness and con-
trols for proper operation each heating and cooling
season. Service as necessary.
II. SERVICE
A. To Clean or Replace Air Filters
Emergency Operation
1. Place a plastic sheet on the floor to catch any water
that may spill from drain pan.
When the unit is in the OFF mode and the Emergency but-
ton is pressed for 5 seconds, the unit will operate as follows:
2. Slide filter out.
• Automatic mode
• temperature preset to 72 F
• automatic fan speed
• louvers set automatically according to the operating mode
• Timer function is cancelled
• buzzer beeps
3. Vacuum clean or wash filter with soapy water. Rinse
and let air dry. If filter needs replacing, filters are
available from the local dealer.
CAUTION: If air filter is not replaced in the unit,
dust and dirt gather in air conditioner and operation
becomes impaired.
When the unit is ON and the Emergency button is pressed
for 5 seconds, the unit will operate as follows:
• the unit is turned off
• buzzer beeps
B. To Clean or Replace Drain Pan
1. Place a plastic sheet on the floor to catch any water
that may spill from drain pan.
When a signal is received by the remote control, the unit
operates accordingly.
—23—
Remote control
signal receiver
Red
LED
Emergency
Button
Green
LED
Yellow
LED
Fig. 35 — Warning Lamps and Emergency Button
Copyright 2006 Bryant Heating & Cooling Systems
Printed in U.S.A.
CATALOG NO. 02-619F0001-II
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