Gree GUD24W2/D-D(U) - Page 26

GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL
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No. Printing Interface No. Printing Interface
4 HEAT_ B Chassis electric heating belt 13 T_SENSOR1
2. Outdoor ambient temperature
sensor interface
4. Defrosting temperature sensor
interface
6. Discharge temperature sensor
interface
5 HEAT_ C Compressor electric heating belt 14 OFAN fan terminal
6 CN5 Control relay terminal 15 W Compressor W phase terminal
7 CN1 Thermostat interface 16 V Compressor V phase terminal
8 CN3 High pressure sensor interface 17 U Compressor U phase terminal
9 LPP
System low pressure protection
interface
18 - -
Filtering Board:
Model:
GUD42W2/D-D(U), GUD48W2/D-D(U), GUD60W2/D-D(U)
No. Printing Interface No. Printing Interface
1 L-OUT Power output live wire terminal 4 N Power input neutral wire terminal
2 N-OUT Power output neutral wire terminal 5 AC-L Power input live wire terminal
3 E1 Filtering board ground wire terminal 6 CN1 Control relay terminal
3.2.2 IPM Testing Method
3.2.2.1Method of Testing IPM Module
(1) Preparation before test: prepare a universal meter and turn to its diode option, and then remove the wires
U, V, W of the compressor after it is powered off for one minute.