Gree U-match Series

U-Match Series DC Inverter Service Manual
96
NO.
SILK-SCREEN
INTERFACE
INTERFACE INSTRUCTION
1
AC-L
Live wire input
Live wire input
2
AC-N
Neutral wire input
Neutral wire input
3
PWR 1
Control power output[1- DC bus
voltage,3- GND]
Power supply interface to the
drive
1-pin: DC bus voltage
3-pin: DC bus GND
4
DC_MOTOR2
DC fan motor2
1-pin: Power supply of fan motor
3-pin: Fan GND
4-pin: +15V
5-pin: Signal control
6-pin: NC
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
5
DC_MOTOR1
DC fan motor1
1-pin: Power supply of fan motor
3-pin: Fan GND
4-pin: +15V
5-pin: Signal control
6-pin: Signal Feedback
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
65-pin: DC fan motor feedback
6
CN3
Control power output[1-GND、2-18V、
3-15V]
Power supply interface to the
drive
1-pin: GND
2-pin: +18V
3-pin: +15V
7
COMM1
Communication line [1-3.3V、2-TX、
3-RX、4-GND]
Communication needle stand of
main control drive
1-pin: +3.3V， 2-pin: TXD
3-pin: RXD， 4-pin: GND
8
CN2
Communication line with1-pin GND,
2-pin B and 3-pinA）
Communication needle stand
with indoor unit
1-pin: GND, 2-pin: B，
3-pin: A
9
CN1
Communication line with 1-pin plus
12V, 2-pin B, 3-pin A and 4-pin GND
Communication interface
(reserved):
1-pin: +12V, 2-pin: B,
3-pin: A, 4-pin: GND
10
H-PRESS
High pressure switch for fan speed
adjustment
Pressure protection switch for
fan speed adjustment
11
HPP
High pressure switch for system
protection (obligate）
Interface of high pressure
protection
12
LPP
Low pressure switch for system
protection (obligate）
Interface of low pressure
protection
13
OVC-COMP
Compressor overload protection
Interface of compressor overload
protection
14
T-SENSOR2
1&2 pin: Tube sensor
3&4 pin: Ambient temperature
5&6 pin: Air discharge
1&2 pin: Case temperature
sensor
3&4 pin: Ambient temperature
sensor
5&6 pin: Discharge temperature
sensor
15
FA
Electronic expansion valve line
1 to 4-pin: Drive impulse output;5-pin:
+12V;
Interface of electronic expansion
valve:
1 to 4-pin: Drive impulse output;
5-pin: +12V;
16
HEAT
Compressor electrical heater
Compressor electric heating belt
17
VA-1
Chassis electrical heater
Chassis electric heating belt
18
4V
4-way valve
4-way valve