CONNECT SERIES SERVICE MANUAL
15
ENGLISH
Troubleshooting
Indoor unit:
Model: AUH2436ZGDA, AUH4860ZGDA
Main Board
No. Printing Interface No. Printing Interface
1 AC-L Live wire input 11 H-PRESS High pressure sensor interface
2 AC-N Neutral wire input 12 LPP System low pressure protection interface
3 HEAT_TIE_B Chassis electric heating belt 13 HPP System high pressure protection interface
4 HEAT_TIE_C Compressor electric heating belt 14 T_SENSOR2
2. Outdoor tube temperature sensor interface
4. Outdoor ambient temperature sensor
interface
6. Discharge temperature sensor interface
5 4WAY 4-way valve 15 T_LAC Low temperature cooling temperature sensing
6 VA Electromagnetic valve interface 16 COM7 Unit communication interface
7 FA Electronic expansion valve interface 17 CN6 GPRS communication interface
8 FA1
Electronic expansion valve 1 interface
Refrigerant heat dissipation
18 COM-MANUAL Thermostat interface
9 COMM1 Drive communication interface 19
DC_MOTOR1
DC_MOTOR2
DC motor output
10 L-PRESS Low pressure sensor interface 20 PWR1 310V DC power supply interface
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