{"product_id":"carrier-ph15na04800gbaaa-pressure-switch-1vlc9v","title":"OEM Carrier High \u0026 Low Pressure Switch Kit for PH15NA04800GBAAA","description":"\u003ch1\u003eOEM Carrier High \u0026amp; Low Pressure Switch Kit (312926-252 \/ 312926-258) for Model PH15NA04800GBAAA\u003c\/h1\u003e\u003cp\u003eThese OEM Carrier refrigerant pressure switches are the factory-specified replacements for the \u003cstrong\u003eCarrier PH15NA04800GBAAA\u003c\/strong\u003e heat pump. The \u003cstrong\u003ehigh pressure switch (312926-252)\u003c\/strong\u003e is rated at \u003cstrong\u003e670 PSI cut-out \/ 470 PSI cut-in\u003c\/strong\u003e and protects the compressor from dangerous over-pressurization events. The \u003cstrong\u003elow pressure switch (312926-258)\u003c\/strong\u003e safeguards the system against loss-of-charge conditions and evaporator freeze-up. When either switch fails, the system will enter a safety lockout — presenting as a unit that trips off shortly after startup, throws a fault code, or refuses to run entirely.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Numbers:\u003c\/strong\u003e 312926-252 (High Pressure Switch, 670\/470 PSI cutout\/cut-in) | 312926-258 (Low Pressure Switch) | Factory Authorized Carrier OEM components\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM switches are calibrated to factory-exact set points. Aftermarket substitutes may have wider pressure tolerances, risking nuisance trips or — worse — failure to protect the compressor under true fault conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Refrigerant circuit work requires EPA Section 608 certification. Tools needed: manifold gauge set, torque wrench, leak detector, and a multimeter to confirm continuity after replacement. Always recover refrigerant before replacing any pressure switch inline with the refrigerant circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. Orders placed before 3 PM EST ship 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 PH15NA04800GBAAA\u003c\/strong\u003e 4-ton, 15 SEER packaged heat pump. Verify both OEM part numbers against your unit's wiring diagram and service manual before ordering — the high and low pressure switches are not interchangeable. Need help confirming fitment? Our HVAC parts specialists are standing by.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641695981939,"sku":"CARRIE-PH15NA04800GBAAA-PRESSURE_SWITCH-312926-252","price":59.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641696014707,"sku":"CARRIE-PH15NA04800GBAAA-PRESSURE_SWITCH-312926-252-GEN","price":52.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-312926-252_b1b0583d-a9fc-47d0-a041-b54cea379563.jpg?v=1775033102","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph15na04800gbaaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}