SG-38MPRA-02 Specifications subject to change without notice. 33
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:
• Wiring
• Faulty fan assembly
• Faulty fan motor
• Faulty PCB
Troubleshooting
YES
Is it within normal parameters?
Replace the fan motor.
Does the problem exist? The unit is operating normally.NO
YES
Does it turn easily?
Find the cause of the problem and resolve.NO
Check the fan motor wiring.
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
Power o. Wait 2 minutes then restart.
Shut o the power supply.
Rotate the fan by hand.
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