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Goodman heatpump. Crazy pressure in heat mode

I have an R410 Goodman heatpump. It works just fine in AC mode. 300 on high side and 105 on low with 70 degrees outside. When I try to turn on the heat pressure on BOTH sides goes beyond 600 and then overload protection kicks in and compressor shuts off. Is it a bad reversing valve? Heat pump is only 6 months old.

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  • Stephen Evans May 11, 2010

    Sounds like it. Goodman has a nationwide 5 yr parts and labor warranty and lifetime on the compressor. Call who installed it so you dont void your warranties.

  • Ken Bledsoe May 11, 2010

    Sure sounds like it to me. ken



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Check the TXV valve on the outdoor unit, it could be stuck closed. We have been experiencing the same problems with the 410 systems and the TXV was the culprit. Good Luck

Posted on Feb 10, 2009


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