Gree GWHD(18)NK3FO Service Manual page 42

7. DC fan malfunction
Main checking points:
If the outdoor fan is blocked by foreign objects;
The connection wire of DC fan is connected reliably? If it is loose?
Flow chart:
Start
Check if the
outdoor fan is blocked by
foreign objects?
no
If the connection wire
of DC fan is loose?
no
Replace the outdoor
mainboard
End
Turn on the unit
yes
after removing the
foreign objects
Turn on the unit after
yes
the connection wire
is properly connected