{"product_id":"carrier-ph15nb04800gbaaa-pressure-switch-1vlc9v","title":"OEM Carrier High \u0026 Low Pressure Switch Kit for PH15NB04800GBAAA","description":"\u003ch1\u003eOEM Carrier High \u0026amp; Low Pressure Switch Set (312926-252 \/ 312926-258) for Model PH15NB04800GBAAA\u003c\/h1\u003e\u003cp\u003eThis factory-matched OEM pressure switch set includes both the \u003cstrong\u003eHigh Pressure Switch (312926-252, 670\/470 PSI)\u003c\/strong\u003e and the \u003cstrong\u003eLow Pressure Switch (312926-258, 55\/23 PSI)\u003c\/strong\u003e — the exact safety controls specified for the \u003cstrong\u003eCarrier PH15NB04800GBAAA\u003c\/strong\u003e heat pump. These switches continuously monitor refrigerant circuit pressure and open the control circuit when readings fall outside safe operating limits. A failed high-side switch typically triggers a hard lockout or nuisance trip on high refrigerant pressure; a failed low-side switch causes the system to fault out shortly after startup due to apparent low-pressure conditions — both symptoms often misdiagnosed as refrigerant leaks or compressor failure.\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 | Normally closed | OEM Carrier Factory Authorized Part\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 | Normally closed | OEM Carrier Factory Authorized Part\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM switches are precision-calibrated at the factory to exact PSI set points. Generic substitutes frequently carry ±10–15% pressure tolerances, risking nuisance trips, compressor damage, or failure to protect during a true fault condition.\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, adjustable wrench, multimeter. Always recover refrigerant before removing switches. Photograph all wiring connections before disconnecting leads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. Ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the \u003cstrong\u003eCarrier PH15NB04800GBAAA\u003c\/strong\u003e 4-ton R-410A packaged heat pump. Verify refrigerant type and PSI ratings on your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you buy — in stock and ready to ship today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641669702003,"sku":"CARRIE-PH15NB04800GBAAA-PRESSURE_SWITCH-312926-252","price":66.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641669734771,"sku":"CARRIE-PH15NB04800GBAAA-PRESSURE_SWITCH-312926-252-GEN","price":58.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-312926-252_047c7795-7549-4974-a78c-613e487fa51c.jpg?v=1775033129","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph15nb04800gbaaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}