Closed Damper 2 Fault

¿Qué significa Fd2 ?

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).

Haga clic en los pasos para seguir su progreso.

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]).