Incorrect phase sequence — Compressor will not start

What does Incorrect phase sequence mean?

If the electrical connections for the heat pump are made with the incorrect phase sequence, the scroll compressor will not start. An alarm will be displayed in this situation.

• Incorrect electrical wiring or phase connection.
• Improper installation of electrical supply.

Click steps to track your progress.

1. 1

   Verify that the electrical connections to the heat pump follow the correct phase sequence (L1, L2, L3).

2. 2

   Ensure the power supply to the heat pump is correctly configured.

3. 3

   If unsure, consult the installation manual or a qualified electrician.

4. 4

   Restart the heat pump after verifying the connections.