XX-05 — Compressor board power supply disconnected

What does XX-05 mean?

The power supply to the compressor board (e.g., for B1) has been disconnected or is unstable. The compressor is shut down.

• Unstable system voltage.
• Power supply to the unit is unavailable or intermittent.
• Loose power connection to the board.

Click steps to track your progress.

1. 1

   Check the main power supply to the unit.

2. 2

   Verify all power connections to the compressor board are secure.

3. 3

   Measure the system voltage to ensure it is within the correct range.

4. 4

   If voltage is unstable, consult an electrician.