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    jjgee111's Avatar
    jjgee111 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    May 22, 2008, 09:31 AM
    Heat Pump banging noise
    My heat pump just started to make a banging noise coming from the bottom of the unit, also I notice that sometimes there is a dampness around the bottom of the unit on the floor.
    marc5678's Avatar
    marc5678 Posts: 1, Reputation: 1
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    #2

    May 22, 2008, 09:36 AM
    How do I get bonded in Texas
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #3

    May 22, 2008, 01:29 PM
    You did not actually say inside or outside so you get to answers.

    Could be the defrost cycle OR the fan blade hitting ice OR you have liquid slug back to the compressor. I would schedule a service call from a local professional before damage is done.

    TURN THE outside unit off till it is repaired

    NEXT it could also be the blower wheel or motor mounts on the inside unit. Turn power off remove blower door cover and try to move the motor itself by hand (back and forth). If the motor mount is causing the problem it will move around and cause the banging sound.

    It could be the indoor coil being froze up allowing the condensate to drip down and miss the drain pan. Check for a frozen coil also.
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
    Ultra Member
    		  
    #4

    May 23, 2008, 06:03 AM
    Are you hearing this noise coming from the indoor airhandler or the outside condenser unit?
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