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Rheem High Pressure Trips
Hi. We have a Rheem RPKA--48JAZ heat pump which we installed about 15 years ago. I runs perfectly in AC mode, and also in heating mode as long as the outside temp is below 60F. But once the outside temp rises to the 60F range, it will repeatedly trip the high pressure sensor.
Our HVAC contractor is stumped. We had a problem last summer with the coils freezing in cooling mode, but that was a pinhole leak in the accumulator, which has been replaced and the system recharged. He's added a bi-directional filter and inspected the metering devices on both the outside unit and in the air handler.
Others have told him about a checkvalve in the compressor unit that goes bad. Does this unit have a TXV in the compressor? Could that be the issue?
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