Troubleshooting
Page 42
2.2 Error Display (For Some Outdoor Units)
Display Malfunction or Protection Solution
EC 51
Outdoor EEPROM malfunction TS21
EL 01
Indoor / outdoor units communication error TS22
PC 40
Communication malfunction between IPM board and outdoor main board TS37
PC 08
Outdoor overcurrent protection TS38
PC 10
Outdoor unit low AC voltage protection TS32
PC 11
Outdoor unit main control board DC bus high voltage protection TS32
PC 12
Outdoor unit main control board DC bus high voltage protection /341 MCE error TS32
PC 00
IPM module protection TS31
PC 0F
PFC module protection TS40
EC 71
Over current failure of outdoor DC fan motor TS25
EC 72
Lack phase failure of outdoor DC fan motor TS41
EC 07
Outdoor fan speed has been out of control TS24
PC 43
Outdoor compressor lack phase protection TS42
PC 44
Outdoor unit zero speed protection TS38
PC 45
Outdoor unit IR chip drive failure TS43
PC 46
Compressor speed has been out of control TS38
PC 49
Compressor overcurrent failure TS38
PC 30
High pressure protection TS44
PC 31
Low pressure protection TS34
PC 0A
High temperature protection of condenser TS46
PC 06
Temperature protection of compressor discharge TS47
PC 02
Top temperature protection of compressor TS35
EC 52
Condenser coil temperature sensor T3 is in open circuit or has short circuited TS28
EC 53
Outdoor room temperature sensor T4 is in open circuit or has short circuited TS28
EC 54
Compressor discharge temperature sensor TP is in open circuit or has short circuited TS28
EC 50
Open or short circuit of outdoor unit temperature sensor(T3,T4.TP) TS28
PC 0L
Low ambient temperature protection TS43