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This OEM high pressure switch is the factory-specified replacement for the Payne PA17NA02400GBBAA split-system heat pump. The high pressure switch monitors refrigerant pressure on the high side of the refrigeration circuit and sends a signal to shut down the compressor if pressure exceeds a safe threshold. When this switch fails or trips, the system will lock out, refuse to start, or shut down shortly after beginning a cooling or heating cycle — protecting the compressor from catastrophic damage due to over-pressurization.
Compatibility: Designed specifically for the Payne PA17NA02400GBBAA 2-ton split-system heat pump. Always cross-reference part number 312926-252 and verify electrical connector type and port thread size against your existing switch before ordering. Our fitment team is available to confirm compatibility prior to purchase.