Alert Code 346 — HP Jumper Not Removed

What does 346 mean?

This critical alert indicates that the heat pump configuration jumper has not been cut on the air handler control. This is typically seen when matching a non-communicating heat pump with a Lennox communicating indoor unit.

• Heat pump configuration jumper not cut on air handler control

Click steps to track your progress.

1. 1

   Ensure the O to R configuration link is cut on the air handler control.

2. 2

   The system should automatically clear this alert when it detects the issue is resolved.

3. 3

   If the issue persists, consult your installation manual or contact a qualified technician.