Gree U-MATCH B Series, Manual

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U-MATCH SERIES DC INVERTER AIR CONDITIONERS SERVICE MANUAL
89
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
UMAT18HP230V1BO
/
UMAT24HP230V1BO
/
UMAT30HP230V1BO
(1). Driving Board
2 3 4 1 5
6
7
8 9 10 13 14 15 11 12
No. Printing Interface No. Printing Interface
1 L2_2 PFC induction wire (blue) 2 L1_1 PFC induction wire (brown)
3 N Neutral wire input (white) 4 AC-L Live wire input (red)
5 COMM/COMM1 Communication interface 6 JTAG1 (Reserved)
7 PWR Control power input 8 DC-BUS1
Bus electric discharging interface
(for testing)
9 L2-1 PFC induction wire (yellow) 10 L1-2 PFC induction wire (white)
11 P-OUT (Reserved) 12 G-OUT (Reserved)
13 W Compressor Phase W 14 V Compressor Phase V