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-   -   Bang/Thump noise upon shutoff (https://www.askmehelpdesk.com/showthread.php?t=260304)

  • Sep 14, 2008, 07:34 AM
    kb1dvg
    Bang/Thump noise upon shutoff
    My question is this: I have a 1999 ColemanEvcon furnace/heatpump (not sure of model) & every time the unit shuts off after its cycle there is a loud bang noise for a second or two heating or cooling & was wondering what that may be? Blower motor/bearings gone bad? On the other hand when it's in the emergency heat mode& the cycle is nearng the end the blower does slow for a few min then shuts off without any noise at all. Please can someone tell me what it could be? Thanks in advance, Joe... :o
  • Sep 14, 2008, 09:05 AM
    esquire1
    That is because in them mode, the compressor is not running. Could be the compressor is going bad or the rubber groments on the compressor are worn or dry rotted

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