Air-to-water Heat Pump
29
19 Wring Diagram
19.1 PCB outline
(1) GRS-CQ12Pd/NaB-K(O), GRS-CQ14Pd/NaB-K(O), GRS-CQ16Pd/NaB-K(O)
Silk screen
Specification
AC-L
live wire input of power supply, red
N
Neutral line input of power supply(PFC blue inductive wire) blue
L1-1
PFC brown inductive wire
L2-1
PFC yellow inductive wire
L1-2
PFC white 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, 6 hole: 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;
