Wring Diagram; Pcb Outline - Gree GRS-CQ16Pd/NaB-K Owner's Manual

Air-to-water Heat Pump

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
AC-L
N
L1-1
L2-1
L1-2
U
V
W
DC_MOTOR1
DC_MOTOR2
4V1
HEAT
VA-1
HPP
LPP
T-SENSOR2
T-SENSOR3
CN66, CN67
CN65
FA
H-PRESS
live wire input of power supply, red
Neutral line input of power supply(PFC blue inductive wire) blue
PFC brown inductive wire
PFC yellow inductive wire
PFC white inductive wire
U-phase of compressor
V-phase of compressor
W-phase of compressor
DC fan
1 pin: strong power supply; 3 pin: fan GND; 4 pin: +15V; 5 pin:control signal; 6 pin:
feedback signal;
DC fan
1 pin: strong power supply; 3 pin: fan GND; 4 pin: +15V;5 pin: control signal; 6 pin:
feedback signal;
4-way valve
electric heating tape
e-heater of chassis
high pressure switch
low pressure switch
1, 2hole: pipe temperature; 3, 4hole: environment; 5, 6 hole: exhaust;
1 hole:+3.3V 2 hole: detection: suction temperature sensor
communication cable 2 pin B, 3 pin A
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.
pipe electric expansion valve
1-4 pin: driving impulse output; 5 pin: +12V;
signal input of pressure sensor
1 pin: GND; 2 pin: signal input; 3 pin: +5V;
Specification
29