Operating instructions

52_ Appendix
Display Explanation ErrorSource
474 IPM(IGBTModule)orPFCMtemperaturesensorError OUTDOOR UNIT
475 OUTDOOR UNIT fan2 error OUTDOOR UNIT
484 PFC Overload Error OUTDOOR UNIT
485 Input current sensor error OUTDOOR UNIT
500 IPM is overheated OUTDOOR UNIT
554 Gasleakerror OUTDOOR UNIT
601
Communication error between the Hydro Unit and wired remote
controller
Wired Remote
Controller
602 Wired remote controller Master/Slave setting error
Wired Remote
Controller
604
Communication tracking error between the Hydro Unit and wired
remote controller
Hydro Unit, Wired
Remote Controller
607
Communication error between the Master and Salve wired remote
controllers
Wired Remote
Controller
901 Water inlet (PHE) temperature sensor error(open/short) OUTDOOR UNIT
902 Water outlet (PHE) temperature sensor error(open/short) OUTDOOR UNIT
903 Water outlet (backup heater) temperature sensor error. Hydro Unit
904 DHW tank temperature sensor error Hydro Unit
906 Refrigerant gas inlet (PHE) temperature sensor (open/short) OUTDOOR UNIT
911
Flow switch and water pump error (F/S signal is OFF for 10 sec.
during the water pump signal is ON)
Hydro Unit
912
Flow switch and water pump error (Water pump signal is OFF for
60sec during the F/S signal is ON)
Hydro Unit
Appendix
ERROR CODES