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5.9 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.
Do any exist?
Are they within acceptable
parameters?
Are they properly connected?
Is it in working order?
Replace the outdoor unit.
Is it in working order?
Check system for blockages.
YES
Stop the unit.
NO
Clear the blockage.
NO
Check the compressor resistance values.
YES
Replace the compressor.
NO
Check the connections and wires.
YES
Ensure proper connections or
replace the wires.
NO
Check the reactor.
YES
YES
Replace outdoor PCB.
NO
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