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The unit is opera
�
ng normally
Shut o
ff
the power supply, Rotate
the fan by hand.
Does it turn easily?
Find the cause of the problem and resolve it
5.5
E3(Fan speed has been out of control diagnosis and solu
�
on)
Descrip
�
on
: When indoor fan speed keeps too low (300RPM) for certain
�
me, the unit will stop and the LED will display
the failure.
Recommended parts to prepare:
• Wiring mistake
• Faulty fan assembly’y faulty
• Faulty fan motor
• Faulty PCB
Troubleshoo
�
ng and repair:
YES
NO
YES
YES
Measure the voltage for
the fan motor from the PCB.
Is it within normal parameters?
NO
Replace the indoor PCB
YES
Replace the fan motor
Check the wiring of fan motor.
Is it improperly wired?
Ensure proper connec
�
ons
Power o
ff
, then restart the unit a
�
er 2 minutes.
Does a problem remain?
NO
Tr
o
ub
le
s
h
oo
ti
ng
