Midea MOX630U-55HFN8-RRD0WGA - Section 4

Contents
Troubleshooting
1. Safety Caution ............................................................................................. 39
2. General Troubleshooting .............................................................................. 40
2.1 Error Display (Indoor Unit) ......................................................................................... 40
2.2 Error Display (For Some Outdoor Units) ..................................................................... 42
3. Complain Record Form ................................................................................. 43
4. Information Inquiry ...................................................................................... 45
5. Outdoor Unit Point Check Function(For Some Outdoor Unit) ........................ 48
6. Error Diagnosis and Troubleshooting Without Error Code ........................ 50
6.1 Remote maintenance ................................................................................................ 50
6.2 Field maintenance ..................................................................................................... 51
7. Quick Maintenance by Error Code ............................................................... 56
8. Troubleshooting by Error Code .................................................................... 57
8.1 EH 00/ EH 0A / EC 51 (EEPROM Parameter Error Diagnosis and Solution) ................. 57
8.2 EL 01 (Indoor and Outdoor Unit Communication Error Diagnosis and Solution) ......... 58
8.3 EH 03 / EC 07 (Fan Speed Is Operating Outside of Normal Range)/EC 71(Over Current
Failure of Outdoor DC Fan Motor) Diagnosis and Solution ............................................. 61
8.4 EH 60/EH 61/EC 53/EC 52/EC 54/EC 55/EC 50/EC 05 (Open Circuit or Short Circuit of
Temperature Sensor Diagnosis and Solution) ............................................................ 64
8.5 EL 0C (Refrigerant Leakage Detection Diagnosis and Solution) .................................. 65
8.6 EH 0b(Indoor PCB / Display board communication error diagnosis and solution) ........ 66
8.7 PC 00(IPM malfunction or IGBT over-strong current protection Diagnosis and Solution)....... 67