80
Air to Water Heat Pump
Service Manual- Versati Series
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(3) GRS-CQ12Pd/Na-M(O), GRS-CQ14Pd/Na-M(O), GRS-CQ16Pd/Na-M(O),GRS-CQ16Pd/Na-H(O):
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L1
live wire input of power supplyL2
L3
N Neutral line input of power supply
L Reactor red inductive wire
U U-phase of compressor
V V-phase of compressor
W W-phase of compressor
DC_MOTOR1
DC fan
1 pin: strong power supply; 3 pin: fan GND; 4 pin: +15V; 5 pin: control signal; 6 pin: feedback signal;
DC_MOTOR2
DC fan
1 pin: strong power supply; 3 pin: fan GND; 4 pin: +15V; 5 pin: control signal; 6 pin: feedback signal;
4V1 4-way valve
HEAT electric heating tape
VA-1 e-heater of chassis
HPP high pressure switch
LPP low pressure switch
T-SENSOR2 1, 2hole: pipe temperature; 3, 4hole: environment; 5, 6hole: exhaust
T-SENSOR3 1 hole:+3.3V; 2 hole: detection: suction temperature sensor
CN66, CN67 communication cable 2 pin B, 3 pin A
CN65
communication cable 1 pin earthed, 2 pin B, 3 pin A, 4 pin+12 power supply
It can not be used for communication between outdoor unit and indoor unit.
FA
pipe electric expansion valve
1-4 pin: driving impulse output; 5 pin: +12V;
H-PRESS
signal input of pressure sensor
1 pin: GND; 2 pin: signal input; 3 pin: +5V;
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