38MARB: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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DIAGNOSIS AND SOLUTION (CONT)
The Outdoor Fan Speed is Operating Outside of Normal Range (EC07)
Description:
When the outdoor fan speed remains too low or too high for a certain time, the LED displays the failure code and the AC turns off.
Recommended parts to repair:
• Connection wires
• Fan assembly
• Fan motor
• Outdoor main PCB
Troubleshooting
NOTE: For certain models, outdoor PCB could not be removed separately. In this case, the outdoor electric control box should be replaced as
a whole.
YES
Power off. After two minutes turn the unit on.
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 fan motor wiring.
YES
Is it improperly wired?
Ensure the proper connections.
Measure the fan motor voltage
for the fan motor from the PCB.
YES
Replace the outdoor main PCB.
NO
