C471 - OTP error EEPROM Data Error (Main Micom <-> Inv Micom)

What does C471 mean?

This error indicates an issue with EEPROM data communication, specifically between the Main Micom and the Inverter Micom. This can happen if the outdoor PBA (Printed Board Assembly) was recently changed or if there is a short circuit.

• Problem with data transfer between Main Micom and Inverter Micom.
• A short circuit around the micom.
• A short circuit around the 'A' component on the board.
• EEPROM IC was not downloaded or inserted after changing the outdoor PBA.

Click steps to track your progress.

1. 1

   Turn off the air conditioner at the main power supply.

2. 2

   If you are a technician, download the correct EEPROM data or insert the service EEPROM IC.

3. 3

   Restore power and restart the unit to see if the error persists.

4. 4

   If the error continues, the outdoor PBA may need replacement by a qualified service technician.