38MBR: Service Manual
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21
Overload Current Protection Diagnosis and Solution (F0)
Troubleshooting
Error Code
F0
Malfunction decision conditions
An abnormal current rise is detected by checking the specified current detection circuit.
Supposed Causes
• Power supply problems
• System blockage
• PCB faulty
• Wiring mistake
• Compressor malfunction
Clear the blockage.
Stop the unit
Yes
No
Check the power supply
Replace the compressor.
Check what is blocking the system
No
Check the compressor resistance
values
Yes
No
Check the connec
Ɵ
ons and wires
Yes
Correct the connec
Ɵ
ons or replace the wires.
No
Check the reactor
Yes
Replace the outdoor main PCB.
No
