Error 452 - ZPC detection circuit problem or power failure

What does 452 mean?

There's an issue with the Zero-Phase-Control (ZPC) detection circuit or a general power failure is affecting the unit, disrupting its electrical synchronization.

• Faulty ZPC circuit component
• Unstable or interrupted power supply to the unit
• Loose power connections

Click steps to track your progress.

1. 1

   Check the main power supply to the unit at the electrical panel, ensuring it is stable.

2. 2

   Ensure all power connections to the outdoor unit are secure.

3. 3

   Power cycle the unit by turning off its main power for 30 seconds and then turning it back on.