Troubleshooting 16
7.3 E3/EH 03 / E8/ EC 07 (Fan speed is operating outside of the normal range diagnosis
and solution)
Description: When indoor fan speed keeps too low (300RPM) for certain time, the unit will stop and the LED displays
the failure code.
Recommended parts to prepare:
• Connection wires
• Fan assembly
• Fan motor
• 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 normallyNO
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 manr PCBNO
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