121 PB
WIRING DIAGRAMS
48k-60k BTU Outdoor Units
Figure 803 (48-60k BTU Units)
1 2
1 2
3
3
1 2
1 2
1 2
1 2
1 2
1 2
1 2
1 2
1 2
1 2
1 2
1 2
1 2
1 2
M
M
M
1 2
1 2
3
3
1 2
1 2
3
3
1 2
1 2
M
1 2
1 2
IPM Board
Filter Board
COMPRESSOR
POWER TERMINAL PANEL
DRAINAGE
PAN HEATER
DRAINAGE
PAN HEATER
CRANKCASE
HEATER
POWER
PRESSURE SENSOR 4-WAY VALVE
INDUCTOR
DC FAN1 MOTOR DC FAN2 MOTOR
HIGH
PRESSURE
SWITCH
LOW
PRESSURE
SWITCH
OVERHEAT
PROTECTION
SWITCH
DISCHAGE
TEMPERATURE
SENSOR
SUCTION
TEMPERATURE
SENSOR
COIL
TEMPERATURE
SENSOR
DEFROST
TEMPERATURE
SENSOR
ELECTRONIC EXPANSION
VALVE
AMBIENT
TEMPERATURE
SENSOR
CONNECTION TERMINAL PANEL
NOUT2
LOUT
LOUT1 NOUT1
RED WHT
BLU
Main Control Board
S4 DIP switch setting
S5 DIP switch setting
DIP Switch Setting of Outdoor Unit
Turn on the power before setting the S4-2/S4-3
DIP switches, and dial the switches from OFF to
ON. Turn off the power before setting the S4-1/
S5-1,2,3 DIP switches. Otherwise, the swithes do
not work and the content of the setting are invalid.
Mark of " " indicates the position of DIP switches.
Capacity
Hi Low