Gree GUHD09NK3FO Service Manual page 99

U-Match Series DC
Inverter Service Manual
(2). G U H D 1 8 N K 3 F O / G U H D 2 4 N K 3 F O / G U H D 3 0 N K 3 F O / G U H D 3 6 N K 3 F O / G U H D 4 2 N K 3 F O /
GUHD48NK3FO/ GUHD36NM3FO/GUHD42NM3FO/GUHD48NM3FO/GUHD60NM3FO
Main Control Board
NO. SILK-SCREEN
1 AC-L
2 AC-N
3 PWR 1
4 DC_MOTOR2
5 DC_MOTOR1
6 CN3
96
INTERFACE INSTRUCTION
Live wire input
Neutral wire input
Power supply interface to the drive
1-pin: DC bus voltage
3-pin: DC bus GND
Interface of DC fan motor
1-pin: DC bus voltage
2-pin: Suspended
3-pin: DC bus GND
4-pin: +15V
5-pin: Control signal input
6-pin: Not connected
Interface of DC fan motor
1-pin: DC bus voltage
2-pin: Suspended
3-pin: DC bus GND
4-pin: +15V
5-pin: Control signal input
6-pin: DC fan motor feedback
Power supply interface to the drive
1-pin: GND
2-pin: +18V
3-pin: +15V
NO. SILK-SCREEN
10 H-PRESS
11 HPP
12 LPP
13 OVC-COMP
14 T-SENSOR2
15 FA
INTERFACE INSTRUCTION
Pressure protection switch
for fan speed adjustment
Interface of high
pressure protection
Interface of low pressure protection
Interface of compressor
overload protection
1&2 pin: Case temperature sensor
3&4 pin: Ambient
temperature sensor
5&6 pin: Discharge
temperature sensor
Interface of electronic
expansion valve:
1 to 4-pin: Drive impulse output;
5-pin: +12V;