Service & Parts Manual (2019, 2020, 2021, 2022)
Table Of Contents
- INTRODUCTION
- SPECIFICATIONS
- OPERATION
- ROUTINE MAINTENANCE
- REMOVE AND INSTALL THE CHASSIS
- R-410A SEALED SYSTEM REPAIR
- COMPONENT TESTING
- Hermetic Components Check
- Reversing Valve Description And Operation
- Testing The Reversing Valve Solenoid Coil
- Checking The Reversing Valve
- Replace The Reversing Valve
- Touch Test Chart : To Service Reversing Valves
- Compressor Checks
- Compressor Replacement
- Fan Motor
- Capacitors
- Heating Element
- Drain Pan Valve
- Testing the User Interface and Electronic Control Board
- Thermistors Description
- Electronic Control Board Identification
- Replace the Electronic Control Board
- Replace the User Interface
- TROUBLESHOOTING
- WIRING DIAGRAMS
- PARTS CATALOG
- Available Accessories
75 PB
WIRING DIAGRAMS
Figure 802 (Wiring Diagrams)
R
S
C
-
F
-
-
F
-
-
F
-
R
E
D
B
L
U
E
B
L
A
C
K
F
A
N
H
E
R
M
c
H
P
S
HEATER
RELAY
FAN 1
RELAY
FAN 2
RELAY
FAN 3
RELAY
RV SWITCH
RELAY BOARD
COIL
SOLENOID
OLP JUMPER
IF REQ'D
COMPRESSOR
ASSY PANEL FRONT
RAC GEN IV-USER INTERFACE
TO
DISPLAY
Table 1
SENSORS FIND NUM.
INDOOR COIL
YELLOW
OUTDOOR COIL
BLUE
DISHCHARGE AIR
BLACK
AMBIENT AIR
WHITE
RED
BLUE
TO INNERWALL/
MOTOR MOUNT
MOTOR
YELLOW
WHITE
G
R
E
E
N
WHITE
BLACK
RED
BLUE
BLACK
ELECTRONIC CONTROL
RED
BLUE
BLACK
B
L
U
E
B
L
A
C
K
MOUNT SOLENOID WITH
TERMINALS DOWNWARD
EW
L1
N/L2
G
R
E
E
N
AMB TEMP SENSOR
ID COIL TEMP SENSOR
OD COIL TEMP SENSOR
DISCH AIR TEMP SENSOR
HIGH PRESSU
R
E
SWITCH/JUMPER
POWER CORD
TO CHASSIS
B
L
A
C
K
COMP
RELAY
HEATER
RELAY
Y
E
L
L
O
W
O
R
A
N
G
E
WHITE
WHITE
BLA
CK
USED ON MODEL
WHT12A33A