13. Installation
52
AF50MS3AF50MS3MCEEXHC, AF50MV3AF50MV3MCEEXHC
No.
Displayed
PCB Assy
Meaning
Remarks
Error Code
21
MAIN
Outdoor EEPROM error
Check Outdoor EEPROM data
E471
22
MAIN/INVERTER IPM (IGBT Module) or PFCM Temperature sensor Error
Check Outdoor Inverter PBA
E474
23
MAIN/INVERTER
PFC Overload Error
Check Outdoor Inverter PBA
E484
24
MAIN/INVERTER
IPM is over heated.
Check Outdoor Inverter PBA
E500
25
MAIN
GAS Leak error
Check indoor and outdoor unit model
E554
26
MAIN
Capacity miss match between indoor and outdoor
Check indoor and outdoor unit model
E556
27
MAIN
Error due to not using Smart Install
Check Indoor option code
E508
28
MAIN
Outdoor EEPROM error (checksum)
Check Outdoor EEPROM Data
E470
29
MAIN
EEV or Valve Close error-Self diagnosis
1. Check if the service valve is open
2. Check for refrigerant leakage (pipe
connections, heat exchanger) and
charge refrigerant if necessary
3. Check if there's any blockage on
refrigerant cycle (indoor unit/outdoor
unit)
4. Check if additional refrigerant has been
added after pipe extension
E422
30
MAIN
Outdoor EEPROM checksum error between MAIN and
INVERTER.
Check Outdoor Inverter PBA
E590
31
MAIN
Error on thermal fuse of indoor unit (Open)
E198
