How to tell if your control board or damper is broken. Check voltage from the board, confirm it's sending signals to the damper, then see if the damper moves. No movement means the damper failed; no signals means the board did. Replace the battery first to rule that out.
Well, how would you diagnose between a board and a damper? Yeah, you just go take a voltage, power. Yeah, so there's power coming out of the board, send the signals to a damper, so the damper is not moving. It's a bad damper. You got a bad damper. Now there's nothing coming out of that board that called for that damper. Until we replace this, we don't know what that problem is doing. Yeah, I can't diagnose a bad engine with no battery. Let's replace the battery. By the way, we got a bed. Answer.
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