Closed Damper 2 Fault

What does Fd2 mean?

This fault indicates that the damper is blocked open or soldered, preventing it from closing. This condition can affect temperature control or system operation by not restricting airflow as intended.

• Damper is blocked open or soldered.
• Incorrect settings for damper feedback or relay control (F130, F132, F580).

Click steps to track your progress.

1. 1

   Set parameter [Damper fdb type] (F580) to 0 (No feedback) or 1 (LI L set).

2. 2

   Check the FL relay connection (FLA/FLB terminals) for proper wiring.

3. 3

   Verify the relay configuration using parameters F130 ([RY Relay Function 1]) and F132 ([FL Relay Function]).