:
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
37
DIAGNOSIS AND SOLUTION (CONT)
Inverter compressor drive error (PC04)
Description:
If the IPM module temperature is higher than the limited value, the LED displays the failure code.
Recommended parts to prepare:
• Wiring mistake
• IPM malfunction
• Outdoor fan assembly faulty
• Compressor malfunction
• Outdoor PCB faulty
Troubleshooting and Repair:
Check the wiring between the
PCB and compressor?
Is it improperly wired ?
Ensure proper connections or replace
the wires and connectors.
YES
Check the IPM
NO
Is it functioning
properly?
Replace the IPM board or
replace the outdoor PCB.
NO
Check the outdoor fan and
the outdoor unit ventilation.
YES
Is it functioning
properly?
Refer to
Fan Speed is out
of Control (EHO3)
solution.
NO
Check the compressor
resistance values.
YES
Are they within
acceptable parameters ?
Replace the compressor.
NO
Replace the outdoor PCB.
YES
