“D4” Inlet Pipe Temperature Sensor Error - Gree GMV5 Series Service Manual

GREE
2.2.4.45 "d4" Inlet pipe temperature sensor error
Error display: IDU wired controller and IDU receive light board will display
Error judgment condition and method:
Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the
range of AD value. If the sampling AD value exceeds upper limit and lower limit in 5 seconds continuously,
report the error
Possible reason：
■Poor contact between inlet pipe temperature sensor and terminal in mainboard interface
■Inlet pipe temperature sensor is abnormal
■Detecting circuit is abnormal
Troubleshooting:
GMV5 HR INVERTER VRF UNITS SERVICE MANUAL
189