Have any of you guys ever had this happen? The first time it happened it took four years to get to the point of failure. All the refrigerant and oil leaked out and the compressor seized. The manufacturer wouldn't give me a new unit so I had to rebuild the old one. They gave me a new coil and compressor. After just one year, it happened again. The original installer didn't use pump ups so I put them on when I rebuilt the unit. This is a heat pump installed in northern Pennsylvania. I'm at a loss to explain this and so is the manufacturer.
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