Hitachi fault codes
From the Hitachi manuals on file, range by range.
Hitachi Yutaki
Hitachi Yutaki M & Yutaki S
- 03Lost communication with all sub YUTAKI units
- 10Indoor 2nd DHW thermistor anomaly
- 100Indoor-LCD compressor protection
- 106Excessively high discharge gas temperature
- 12Indoor water outlet thermistor abnormally (THMwo)
- 15Water circuit 2 thermistor abnormally (THMwo2)
- 16Water DHW thermistor abnormally (THMdhwt)
- 17Auxiliary sensor 2 thermistor abnormally (THMaux2)
- 18Auxiliary sensor 1 thermistor abnormally (THMaux1)
- 19Activation of the protection device for the indoor fan motor
- 2Activation of protection device (high pressure cut)
- 203Sub PC-ARFH2E stops answering to main PC-ARFH2E