Lennox LI012CI-170P432-1 Service Manual page 65

6. Malfunction of Insufficient fluorine protection F0
（4）
F0
Troubleshooting
for F0 malfunction
Heat exchangers are
too dirty or the air inlet/outlet
is blocked.
No
Compressor doesn't work
normally. Strange noise or leakage occurs.
Casing is too hot.
No
System is blocked inside
(dirt block, ice block, oil block, Y-valve no
fully open).
No
The refrigerant is leaking
No
Replace a main
board with the
same model.
End
62
Clean the heat exchangers
Yes
blockage of air inlet/outlet.
No
Make compressor run normally.
Yes
No
Yes Remove blockage in the system
No
Check the leaking status of refrigerant
Yes
and charge refrigerant
No
and remove
Malfunction is
eliminated.
Malfunction is
eliminated.
Malfunction is
eliminated.
Malfunction is
eliminated.
Service Manual
Yes
Yes
Yes
Yes
Installation and Maintenance