Error 466 - Over voltage /low voltage of inveter PBA1

What does 466 mean?

Inverter PBA1 (Printed Board Assembly) is experiencing either excessively high or low voltage, which can disrupt its operation and potentially damage components.

• Unstable main power supply to the outdoor unit
• Faulty inverter PBA itself
• Wiring issues affecting voltage delivery

Click steps to track your progress.

1. 1

   Check the main power supply voltage to the outdoor unit using a multimeter (professional task).

2. 2

   Ensure all electrical connections to Inverter PBA1 are secure.

3. 3

   Power cycle the unit to attempt a reset of the inverter system.