{"product_id":"carrier-ph13pb048000aaaa-pressure-switch-1vlc9v","title":"OEM Carrier High \u0026 Low Pressure Switch Kit for PH13PB048000AAAA","description":"\u003ch1\u003eOEM Carrier High \u0026amp; Low Pressure Switch Kit 312926-252 \/ 312926-258 for Model PH13PB048000AAAA\u003c\/h1\u003e\u003cp\u003eThis factory-authorized OEM pressure switch kit includes both the \u003cstrong\u003e312926-252 High Pressure Switch (670\/470 PSI)\u003c\/strong\u003e and the \u003cstrong\u003e312926-258 Low Pressure Switch (55\/23 PSI)\u003c\/strong\u003e, engineered specifically for the \u003cstrong\u003eCarrier PH13PB048000AAAA\u003c\/strong\u003e heat pump. Together, these switches continuously monitor refrigerant-side pressure and protect the compressor from operating outside its safe pressure envelope. A failed high-pressure switch typically causes nuisance high-pressure lockouts or a compressor that trips and won't restart; a failed low-pressure switch causes the system to shut down on low-refrigerant faults or prevents the unit from starting in cold ambient conditions.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs — High Pressure Switch (312926-252):\u003c\/strong\u003e Cut-out 670 PSIG | Cut-in 470 PSIG | Manual or auto-reset | Factory Authorized Parts (FAP) OEM replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs — Low Pressure Switch (312926-258):\u003c\/strong\u003e Cut-out 55 PSIG | Cut-in 23 PSIG | Auto-reset | OEM Sensata \/ Carrier FAP designation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e Genuine Carrier FAP switches are calibrated to exact factory cut-out\/cut-in thresholds. Aftermarket substitutes frequently carry wider PSI tolerances, which can allow compressor operation outside the safe refrigerant pressure window — leading to premature compressor failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant-side pressure switches require the system to be properly recovered or isolated before disconnection. Tools needed: manifold gauge set, 1\/4\" and 3\/8\" service wrenches, multimeter for continuity verification. Licensed HVAC technician installation strongly recommended.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty on both switches. Orders ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the Carrier \u003cstrong\u003ePH13PB048000AAAA\u003c\/strong\u003e heat pump (4-ton, R-410A). Always verify your unit's data plate and existing pressure switch PSI ratings before ordering. Our parts specialists are available to confirm fitment — contact us before you order if you have any questions. \u003cstrong\u003eIn stock — ships today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641845272947,"sku":"CARRIE-PH13PB048000AAAA-PRESSURE_SWITCH-312926-252","price":65.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641845305715,"sku":"CARRIE-PH13PB048000AAAA-PRESSURE_SWITCH-312926-252-GEN","price":57.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-312926-252_fbcc26ae-d931-4f03-bd1c-efe3dd946b82.jpg?v=1775033041","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph13pb048000aaaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}