M Design ACP-09CH25AEMI/I, Service Manual

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5.8 F0(Overload current protection diagnosis and solution)
Description : An abnormal current rise is detected by checking the specified current detection circuit.
Recommended parts to prepare:
• Power supply problems.
• System blockage
• Faulty PCB
• Wiring mistake
• Compressor malfunction
Troubleshooting and repair:
Check the power supply.
Is it in working order? NO Stop the unit.
YES
Check system for blockages.
Do any exist? NO Clear the blockage.
YES
Check the compressor resistance values.
Are they within acceptable
parameters?
NO Replace the compressor.
YES
Check the connections and wires.
Are they properly connected?
NO
Ensure proper connections or
replace the wires.
YES
Check the reactor.
Is it in working order?
NO Replace outdoor PCB.
YES
Replace the outdoor unit.
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