Carrier DHMVHA - Overload and Current Protection; Overload Current Protection (PC08)

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DIAGNOSIS AND SOLUTION (CONT.)
Overload Current Protection (PC08)
Troubleshooting
Error Code PC08
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
Check the power supply.
Check the connections
and wires.
Stop the unit.
No
Yes
No
Correct the connections or
replace the wires.
Yes
Replace the outdoor unit.
Yes
Check the reactor.
No Replace the outdoor main PCB.
Check for system blockage.
Yes
No Clear the blockage.
Check the compressor
resistance values.
Yes
No
Replace the compressor.