Hitachi ECO COMPACT PC-ARC-E Installation & Operation Manual page 80

Code
Enforced Thermo-OFF due to Enforced Cleaning Operation
33
Stoppage of Thermo-OFF by Motion Sensor
34
Retry due to Abnormal Refrigeration Cycle
35
Retry after Defrosting Operation
36
Enforced Stoppage of Room Temperature Water (Heating) Switching to Refrigerant Operation under Air
38
Conditioning Hot Water Supply System
Enforced Thermo-OFF Stoppage of Target Indoor Unit due to Rotation Control at Indoor Unit (Outdoor ->
Indoor)
39
Enforced Thermo-OFF Stoppage of Target Indoor Unit due to Thermo On/Off at Indoor Unit (Remote Controller
-> Indoor)
Enforced Thermo-OFF Stoppage due to GentleCool Comfort at Indoor Unit
40
Enforced Thermo-OFF Stoppage of the Connecting Indoor Unit due to PumpDown at Outdoor Unit
41
Enforced Thermo-OFF Stoppage of Cooling/Heating Operation in frostWash Mode
46
Enforced Thermo-OFF Stoppage due to Econo Fresh
47

NOTE
(*1) Even if stoppage Alarm "02" is not always indicated. If the unit is thermo-OFF due to another
cause of stoppage prior to alarm occurrence, the code of the cause remains.
(*2) The outdoor unit equipped with an inverter resets ODU Micro-Computer if the transmission
between inverter PCB and outdoor unit PCB is interrupted for 30 seconds. Therefore, the stoppage
cause code when Alarm 04 occurs may be "05".
(*3) IDU Micro-Computer is reset if the transmission between the indoor unit and the outdoor unit is
interrupted for 3 minutes. Therefore, the stoppage cause code when Alarm 03 occurs may be "06".
(*4) If the stoppage cause code "21" is indicated on the indoor unit of twin, triple, or quad, check
the stoppage cause of other indoor unit numbers.
PMEN0630 rev.0 - 07/2022
Cause
10
66