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This is the factory OEM high pressure switch (part number 312926-252) designed specifically for the Payne PA17NA02400GBAAA split-system air conditioner. The pressure switch monitors refrigerant pressure on the high side of the system and acts as a critical safety device — cutting power to the compressor if pressure exceeds safe operating limits. A failed or stuck pressure switch commonly causes nuisance lockouts, compressor short-cycling, or a system that simply refuses to start even when refrigerant charge is correct.
Compatibility: Engineered as a direct OEM replacement for the Payne PA17NA02400GBAAA 2-ton split-system air conditioner. Always verify the OEM part number 312926-252 against your unit's data plate or existing switch label before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — reach out before placing your order.