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    kb1dvg's Avatar
    kb1dvg Posts: 1, Reputation: 1
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    #1

    Sep 14, 2008, 07:34 AM
    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
    esquire1's Avatar
    esquire1 Posts: 2,483, Reputation: 209
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    #2

    Sep 14, 2008, 09:05 AM
    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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