33
Installation and Maintenance
4. Malfunction of Insucient uorine protection F0
Make compressor run normally.
Remove blockage in the system
Checkthe leakingstatusofrefrigerant
andchargerefrigerant
Troubleshooting
forF0malfunction
Yes
Heat exchangers are
toodirty or theair inlet/outlet
is blocked.
Malfunction is
eliminated.
Yes
No
No
Cleanthe heat exchangers
andremove
blockage of airinlet/outlet.
Yes
Casing is toohot.
Malfunction is
eliminated.
Compressor doesn'twork
normally.Strange noiseorleakage occurs.
Yes
No
No
fully open).
Yes
Malfunction is
System is blocked inside
(dirt block, ice block, oil block, Y-valve no
eliminated.
Yes
No
No
Yes
The refrigerant is leaking
Malfunction is
Yes
eliminated.
No
No
End
Replace a main
board with the
same model.