Service manual

32
disconnected, replace or connect the feedback
signal wire.
6、Check whether the supply power is phase-lacking or
phase opposition.
7、Check whether the AC electromagnetic contactor is
well.
E8
display at
off state
flicker 8/10
SEC
display at
off state
frost
protection/over
heat protection
1、Check whether the filter of the indoor unit is dirty or
blocked, and clean if it is dirty.
2、Check whether the indoor fan is running normally,
and replace the motor if it is abnormal.
3、Check whether indoor pipe temperature sensor is
normal, and replace the sensor if it is abnormal.
4、Check whether the system pressure is normal, if
abnormal, should check whether there is leakage,
and fill the refrigerant again.