{"product_id":"carrier-ph15nb02400gbbaa-pressure-switch-1vlc9v","title":"OEM Carrier High \u0026 Low Pressure Switch Kit for PH15NB02400GBBAA","description":"\u003ch1\u003eOEM Carrier High \u0026amp; Low Pressure Switch Kit 312926-252 \/ 312926-258 for Model PH15NB02400GBBAA\u003c\/h1\u003e\u003cp\u003eThese OEM Carrier refrigerant pressure switches are the factory-specified replacements for the \u003cstrong\u003eCarrier PH15NB02400GBBAA\u003c\/strong\u003e heat pump. The \u003cstrong\u003ehigh-pressure switch (312926-252, 670\/470 PSI)\u003c\/strong\u003e and \u003cstrong\u003elow-pressure switch (312926-258)\u003c\/strong\u003e are critical safety controls that continuously monitor refrigerant circuit pressure. When system pressure drifts outside the safe operating band — due to refrigerant loss, a blocked coil, or a failing TXV — these switches cut power to the compressor to prevent catastrophic damage. Typical failure symptoms include nuisance lockouts, fault codes indicating high or low pressure trips, short-cycling, or a compressor that runs briefly and then shuts off entirely.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e High-pressure switch 312926-252: 670 PSI cutout \/ 470 PSI cut-in | Low-pressure switch 312926-258: monitors suction-side pressure | Both rated for R-410A refrigerant systems | SPST normally-closed configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e Genuine Carrier OEM switches are calibrated to exact factory trip points. Aftermarket alternatives frequently drift ±10–15% from rated thresholds, risking compressor damage or nuisance trips that are difficult to diagnose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant circuit must be recovered before replacing switches on a live system. A licensed HVAC\/R technician is required for this repair. Tools needed: refrigerant recovery machine, manifold gauge set, adjustable wrench, multimeter. Always de-energize the unit before beginning work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 90-day OEM manufacturer warranty. In-stock units ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as direct OEM replacements for the \u003cstrong\u003eCarrier PH15NB02400GBBAA\u003c\/strong\u003e 2-ton R-410A heat pump. Always confirm refrigerant type and pressure ratings on your unit's data plate before ordering. Not sure if these parts fit your exact serial range? Our team verifies fitment before you order — contact us and we'll confirm in minutes.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641675141491,"sku":"CARRIE-PH15NB02400GBBAA-PRESSURE_SWITCH-312926-252","price":59.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641675174259,"sku":"CARRIE-PH15NB02400GBBAA-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_45aa8e85-f87f-458e-a957-c36178854ecb.jpg?v=1775033114","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph15nb02400gbbaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}