30
Installation and Maintenance
Service Manual
No display for some models
without mode indicator.
F1
Indoor ambient temperature sensor is open/short-circuited
F2
Indoor evaporator temperature sensor is open/short-circuited
H6
Blocked protection of IDU fan motor
C5
Malfunction protection of jumper cap
U8
Zero-crossing inspection circuit malfunction of the IDU fan motor
F0
Lack of refrigerant or block protection for the system(not applicable to
residential air conditioner)
E8
Overload malfunction
H3
Overload of compressor
E1
High pressure protection of system
E5
Overcurrent protection