Omega OTEC IEWB Series - Error Code List; Indoor Unit Error Codes; Outdoor Unit Error Codes

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2.3 Error code list
2.2.1 Indoor unit error code
Definitions of malfunction
Error code
Communication failure between indoor and outdoor unit
E1
T1 room temperature sensor fault
E2
T2 temperature sensor fault
E3
T2B temperature sensor fault
E4
Outdoor unit fault
E5
Zero-crossing detection fault
E6
EEPROM error
E7
PG fan motor stall protection
E8
Communication fault of wired controller
E9
Room card port disconnected port
HC
When it shows E5, press to show more error code.
Definitions of malfunction
Error code
Communication failure between indoor and outdoor unit
E2
T4 ambient temperature sensor fault
E4
T5 discharge temperature sensor fault
E5
T3 condenser pipe temperature sensor fault
E6
Indoor unit EEPROM error
E7
AC over-voltage / under-voltage protection
E9
Outdoor unit EEPROM error
E10
Indoor unit fan motor fault
E11
IPM temperature sensor fault
E12
Outdoor unit fan motor fault
E2x
Compressor fault
H2x
PFC fault
H3x