Air-to-water Heat Pump Split Versati
95
SPLIT TYPE
3.4 Overload Protection of Compressor or Driver Error
Comp Overload Protection
Check if the AC
contactor is damaged
Replace the AC contactor
Check if the compressor
wiring is correct
Adjust the
compressor wiring
Check if the voltage is normal
Check if the refrigerant of
the system is excessive
Contact the power
supply company
Recharge suitable
amount of the refrigerant
yes
no
no
yes
no
yes
yes
3.5 DC Fan Error EF
EF is displayed on
the wired controller
Is the motor wire
phase sequence right
?
Adjust the motor wire
Is the Fan wire
terminal loose
?
Replace the mainboard AP2.
Does it work normally?
Work Normally
yes
no
yes
no
no
Tighten the fan
wiring terminal
Replace the outdoor fan
yes
