54
Maintenance
Service Manual
NO. Malfunction
Name
Display
Method of
Indoor Unit
A/C Status Possible Causes
Error Code
7
Overload
malfunction
E8
Indoor and outdoor fan keeps on
running,other loads stop operation
1. The environment is formidable.
2. Heat exchangers are too dirty or the air inlet/outlet is
blocked.
3. Fan motor is not working Abnormal fan speed; fan speed is
too low or the fan doesnt run.
4. Compressor doesnt work normally. Strange noise or
leakage occurs. Temperature of the shell is too high.
5. System is blocked inside(dirt block, ice block, oil block,
Y-valve not fully open).
6.Temperature sensor of main board cant detect correctly.
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