Gree Versati II Series - DC Fan Error EF; Overload Proection of Compressor or Driver Error E5

66
Air to Water Heat Pump
Service Manual- Versati II Series
MAINTENANCE
(4) Overload proection of compressor or driver error E5
Check if the AC
contactor is damaged
Check if the compressor
wiring is correct
Check if the voltage is normal
Check if the refrigerant of
the system is excessive
Comp Overload Protection E5
Replace the AC contactor
Adjust the
compressor wiring
Contact the power
supply company
Recharge suitable
amount of the refrigerant
no
no
yes
yes
yes
yes
no
(5) DC fan error EF
Is the motor wire
phase sequence right?
EF is displayed on
the wired controller
Adjust the motor wire
Yes
No
Replace the outdoor fan
Work Normally
Yes
Tighten the fan
wiring terminal
Replace the mainboard.
Does it work normally?
Yes
No
No
Is the Fan wire
terminal loose?