Gree GRH120DB-K6NA1A

33
Installation and Maintenance
4. Malfunction of Insu󰀩cient 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.