Flavio G Portland , OR April 07, 2021 The damper stopped closing I diagnosed the problem to be related to the damper because it would stay open even after reaching the set temperature and only by jiggling the cables connecting to the damper control, it would actuate. The new part resolved the issue. Read More... Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes Tools: Screwdrivers