Tr
oubleshooting
Page 62
5.5 E3(Fan speed has been out of control diagnosis and solution)
Description
: When indoor fan speed keeps too low (300RPM) for certain time, 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
Troubleshooting and repair:
YES
Power off, then restart the unit after 2 minutes.
Is it within normal parameters?
Replace the fan motor
Does a problem remain?
The unit is operating normally
NO
Shut off the power supply, Rotate
the fan by hand.
YES
Does it turn easily?
Find the cause of the problem and resolve it
NO
Check the wiring of fan motor.
YES
Is it improperly wired?
Ensure proper connections
Measure the voltage for
the fan motor from the PCB.
YES
Replace the indoor PCB
NO