Error Code: PC 45 – Outdoor Unit IR Chip Drive Failure

Error Code: PC 45 – Outdoor Unit IR Chip Drive Failure

What this means:
This error indicates that the IR (Intelligent Regulator) chip on the inverter PCB has detected a parameter error in itself. The failure is flagged when the outdoor unit powers on, and the system halts to prevent further damage.

Try this first (quick reset):

1. Turn off power to the unit.

2. Wait at least 2 minutes.

3. Power the unit back on and observe the LED or error display.

• If the error clears — normal operation resumes.

• If the error remains — proceed to replacement.

Next steps (for technicians):

• Replace the inverter module PCB.

What you might need:

• Inverter module PCB

Helpful tip:
PC 45 is specific to startup conditions. If this error appears at power-on and does not clear with a restart, the inverter board is considered irrecoverable and must be replaced.

Click here to view the detailed guide. TS40