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Wall unit makes gurgling noises and bangs - Heating & Cooling

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  • rw60 May 10, 2008

    This is a Panasonic split system about 7.5 kva (not an inverter) we use it more for heating than cooling but it does it more on heating cycle, happens not all the time just every now and then. Sounds as if its gas noises in the wall unit pipes startles you when it happens. Bang sounds a pressure valve releasing abruptly?/ Compressor is outside

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Is this a heating unit or air conditioning unit?

Posted on May 10, 2008

  • James Helmer
    James Helmer May 11, 2008

    On heat/cool pump systems there is a reversing valve in the outside unit that changes the gas flow. When you change from heat to the cool mode there will be a change in pressure due to the reversing of the gas flow. The sound you are most likely hearing is this valve operating in a normal manor.

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