Aiwa -09CHSRINV/TP11 Service Manual page 55

3.2.17 F6 The Compressor Lack of phase / Anti-phase protection.
If ODU PCB can't test one, or even three phase of compressor current, it will show F6 protection.
Yes
Air Conditioner Service Manual
Display F6
Check compressor
wiring connector, is
it well connected?
Yes
The Compressor
wiring in good quality?
Yes
Compressor phase-
current test circuit failure
Replace ODU PCB
Problem solved?
No
Replace compressor
End
No
Re-connect
No
Problem solved?
No
Replace the wires
No
Problem solved?
Yes
Yes
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