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DIAGNOSIS AND SOLUTION (CONT)
E3/F5 (Fan speed is operating outside of the Normal Range)
Description: When the indoor fan speed maintains a low speed (ex. 300RPM) or a speed that’s too high (ex.1500RPM) for a certain time, the
unit stops and the LED displays the failure (E3). When the outdoor fan speed registers below 200RPM or over 1500RPM for an extended
period of time, the unit stops and the LED displays the failure (F5).
Recommended parts to prepare:
S Wiring
S Faulty fan assembly
S Faulty fan motor
S Faulty PCB
Troubleshooting and Repair:
YES
Power o , then restart the unit after 2 minutes.
Is it within normal parameters ?
Replace the fan motor
Does a problem remain ? The unit is operating normallyNO
Shut o the power supply , Rotate
the fan by hand .
YES
Does it turn easily ?
Find the cause of the problem and resolve itNO
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 /outdoor
PCB
NO
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