Hitachi Error Code Library
Complete Hitachi Appliance Error Reference
Air Conditioner Error Codes
01
Indoor unit communication error
02
Outdoor unit communication error
03
Sensor failure (room temp)
04
Evaporator sensor fault
05
Condenser sensor fault
06
Fan motor abnormal operation
07
Compressor overload protection
08
EEPROM error
09
Power supply instability
10
Drain pump issue
Washing Machine Error Codes
C01
Water supply issue
C02
Drain error
C03
Door lock failure
C04
Motor error
C05
Water overflow detected
C06
Temperature sensor fault
C07
Heater error
Refrigerator Error Codes
F1
Temperature sensor failure
F2
Defrost system error
F3
Fan motor failure
F4
Compressor issue
F5
Door switch error
F6
Communication failure
System Messages
E1
Filter replacement required
E2
Air quality sensor fault
E3
Motor failure
E4
Overheat protection activated
E5
Power failure detected
RESET
System restart required
LOCK
Child lock active