{"product_id":"carrier-ph14na04800gbaaa-pressure-switch-1vlc9v","title":"OEM Carrier High \u0026 Low Pressure Switch Kit for PH14NA04800GBAAA","description":"\u003ch1\u003eOEM Carrier High \u0026amp; Low Pressure Switch Kit (312926-252 \/ 312926-258) for Model PH14NA04800GBAAA\u003c\/h1\u003e\u003cp\u003eThese two OEM pressure switches are the factory-specified refrigerant circuit protection components for the \u003cstrong\u003eCarrier PH14NA04800GBAAA\u003c\/strong\u003e heat pump. The \u003cstrong\u003ehigh pressure switch (312926-252, 670-470#)\u003c\/strong\u003e monitors discharge-side refrigerant pressure and opens the circuit if pressure climbs dangerously high — protecting the compressor from catastrophic over-pressure failure. The \u003cstrong\u003elow pressure switch (312926-258, 55-23#)\u003c\/strong\u003e monitors suction-side pressure and opens the circuit when pressure drops too low, preventing compressor operation in a refrigerant-starved or frosted-over condition. When either switch fails, the most common symptom is a system lockout: the unit starts briefly then trips on a fault code, or refuses to start at all. Replacing both switches together is the industry best practice when diagnosing a refrigerant-circuit fault.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs — High Pressure Switch (312926-252):\u003c\/strong\u003e 670 PSI cut-out \/ 470 PSI cut-in | OEM Carrier Factory Authorized Part | Replaces part# 312926252\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs — Low Pressure Switch (312926-258):\u003c\/strong\u003e 55 PSI cut-out \/ 23 PSI cut-in | OEM Carrier Factory Authorized Part | Replaces part# 312926258\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e These are genuine Carrier Factory Authorized Parts with factory-calibrated trip points. Aftermarket switches often carry wider tolerances, which can cause nuisance trips or — worse — allow the compressor to operate outside safe pressure limits, shortening compressor life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant circuit work requires an EPA 608 certified technician. Tools needed: manifold gauge set, refrigerant recovery equipment, 1\/4\" nut driver, multimeter. Always recover refrigerant before disconnecting any refrigerant-side switch. Verify system pressures after reassembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty on both switches. Ships 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\u003ePH14NA04800GBAAA\u003c\/strong\u003e heat pump (4-ton, R-410A). Verify existing switch trip-point markings on your unit's data plate or service manual before ordering. Our fitment team is available to confirm compatibility before you buy — no guesswork required. \u003cstrong\u003eOrder now and receive same-day shipping on in-stock parts.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641778426227,"sku":"CARRIE-PH14NA04800GBAAA-PRESSURE_SWITCH-312926-252","price":61.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641778458995,"sku":"CARRIE-PH14NA04800GBAAA-PRESSURE_SWITCH-312926-252-GEN","price":54.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-312926-252_00f2ef59-0643-495b-bf28-3666a35cc028.jpg?v=1775033058","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph14na04800gbaaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}