Malfunction Name of 42K Multi zone
Incorrect connection of communication wire or expansion valve failure
Exhaust Protection (Temperature Overheat)
Communication Malfunction
41 (for Unit D)
51 (for Unit E)
46 (for Unit D)
56 (for Unit E)
Condensate Water Full in Indoor Unit
Indoor Ambient Sensor Failure
15 (for Unit A)
25 (for Unit B)
35 (for Unit C)
45 (for Unit D)
55 (for Unit E)
Indoor Tube Sensor Failure
42 (for Unit D)
52 (for Unit E)
Outdoor Ambient Sensor Failure
Outdoor Tube Sensor Failure
Outdoor Exhaust Sensor Failure
Oil Return in Cooling Mode
Refrigerant Recovery Mode
Defrost or Oil Return Heat Mode
Compressor Overload Protection
Compressor Desynchronizing
High Supply Voltage Protection
Compressor Phase Failure / Reverse Protection
Compressor Over-current Protection
Communication Error between the Drive Board and the Main Board
Module Temperature Sensor Failure
Radiator Overheat Protection
AC input Current Protection
Transducer Connection Protection
Temperature Drift Protection
Drive Board Ambient Sensor Failure
Capacitor Charging Circuit Error