GREE U-Match 5 SERIES UNIT SERVICE MANUAL
57
3.4.2 “E2” Indoor Anti-freezing Protection
Error display:
IDU wired controller and IDU receiver light board will display E2
Error judgment condition and method:
Check IDU pipe temperature. When pipe temperature is too low, freeze protection will be activated to
prevent freezing damage of evaporator.
Possible reason
:
■IDU filter and evaporator are dirty
■IDU motor is blocked
■Refrigerant amount is insufficient
■Ambie
nt temperature of IDU and ODU is too low
Troubleshooting
:
Summary of Contents for U-Match 5 Series
Page 31: ...GREE U Match 5 SERIES UNIT SERVICE MANUAL 28 Model GUD100W NhA T...
Page 32: ...GREE U Match 5 SERIES UNIT SERVICE MANUAL 29 Model GUD125W NhA T GUD140W NhA T...
Page 33: ...GREE U Match 5 SERIES UNIT SERVICE MANUAL 30 Model GUD100W NhA X...
Page 34: ...GREE U Match 5 SERIES UNIT SERVICE MANUAL 31 Model GUD125W NhA X GUD140W NhA X...
Page 35: ...GREE U Match 5 SERIES UNIT SERVICE MANUAL 32 Model GUD160W NhA X...
Page 59: ...GREE U Match 5 SERIES UNIT SERVICE MANUAL 56 Troubleshooting...
Page 78: ...GREE U Match 5 SERIES UNIT SERVICE MANUAL 75 Troubleshooting...
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