{"product_id":"carrier-ph15na024000baaa-pressure-switch-1vlc9v","title":"OEM Carrier High \u0026 Low Pressure Switch Kit for PH15NA024000BAAA","description":"\u003ch1\u003eOEM Carrier High \u0026amp; Low Pressure Switch Kit — 312926-252 \/ 312926-258 for Model PH15NA024000BAAA\u003c\/h1\u003e\u003cp\u003eThese OEM pressure switches are the factory-specified safety controls for the \u003cstrong\u003eCarrier PH15NA024000BAAA\u003c\/strong\u003e heat pump. The \u003cstrong\u003ehigh pressure switch (312926-252)\u003c\/strong\u003e monitors refrigerant discharge pressure and cuts power to the compressor if pressure exceeds the safe upper threshold (670 PSI cut-out \/ 470 PSI cut-in), preventing catastrophic compressor failure. The \u003cstrong\u003elow pressure switch (312926-258)\u003c\/strong\u003e monitors suction-side pressure and shuts down the system if pressure drops too low — a common indicator of refrigerant loss or a blocked metering device. Together, they form the primary refrigerant-side protection circuit. When either switch fails or sticks open, you'll typically see the system go into a hard lockout, flash a fault code, or short-cycle repeatedly without cooling.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Numbers:\u003c\/strong\u003e 312926-252 (High Pressure Switch, 670\/470 PSI) | 312926-258 (Low Pressure Switch) — Genuine Carrier factory components meeting exact design specifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM switches use factory-calibrated set-points and rated electrical contacts. Aftermarket substitutes often carry wider pressure tolerances, risking either nuisance trips or — more dangerously — failure to protect the compressor under true over-pressure conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Refrigerant system work. The system must be recovered before replacing either switch if refrigerant lines must be opened. Tools needed: manifold gauge set, refrigerant recovery machine, adjustable wrench, and a multimeter to verify switch continuity before re-commissioning. Licensed EPA 608-certified technician strongly recommended.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. Ships same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the \u003cstrong\u003eCarrier PH15NA024000BAAA\u003c\/strong\u003e heat pump platform. Always verify against your unit's data plate and wiring diagram before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions. In stock and ready to ship today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641735434611,"sku":"CARRIE-PH15NA024000BAAA-PRESSURE_SWITCH-312926-252","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641735467379,"sku":"CARRIE-PH15NA024000BAAA-PRESSURE_SWITCH-312926-252-GEN","price":65.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-312926-252_9e798416-8991-4bed-b9fb-7264a01991f2.jpg?v=1775033090","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph15na024000baaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}