Yellow ALERT LED 7 flashes — Reverse phase

What does ALERT LED 7 flashes Yellow mean?

The electrical supply phases are reversed, causing the compressor to attempt to run backward. This is a LOCKOUT condition.

• Supply phase reversal.
• Incorrect wiring of power leads.

Click steps to track your progress.

1. 1

   Turn off unit power supply and install a lockout tag.

2. 2

   Verify the electrical supply phase sequence is correct.

3. 3

   Check that the power leads are wired correctly to the compressor and contactor.