Error Code: PC 45 – Outdoor IR Chip Drive Failure

Error Code: PC 45 – Outdoor IR Chip Drive Failure

What this means:
When the inverter control chip (IR chip) detects an internal parameter error during startup, the system shuts down and displays this error code. This usually indicates a fault within the inverter module PCB itself.

Try this first (quick reset):

1. Turn off power to the unit completely.

2. Wait 2 full minutes.

3. Turn the unit back on and check if the error clears.

• If the error clears — it may have been a one-time internal glitch.

• If the error persists — continue with the step below.

Next step (for technicians):

• Replace the inverter module PCB. This is the only corrective action recommended by the manufacturer for this error.

What you might need:

• Inverter module PCB

Helpful tip:
This error occurs during power-on self-check and cannot be resolved by sensor resets or external wiring changes. Always ensure you're replacing with a compatible PCB for the specific model.

Click here to view the detailed guide.TS40