{"product_id":"carrier-ph13nb048000abaa-pressure-switch-1vlc9v","title":"OEM Carrier High \u0026 Low Pressure Switch Kit for PH13NB048000ABAA","description":"\u003ch1\u003eOEM Carrier High \u0026amp; Low Pressure Switch Kit (312926-252 \u0026amp; 312926-258) for Model PH13NB048000ABAA\u003c\/h1\u003e\u003cp\u003eThis listing includes both OEM Carrier refrigerant pressure switches factory-specified for the \u003cstrong\u003eCarrier PH13NB048000ABAA\u003c\/strong\u003e packaged heat pump unit. The \u003cstrong\u003ehigh pressure switch (312926-252, rated 670-470 psi)\u003c\/strong\u003e monitors the refrigerant circuit for dangerously elevated discharge pressures and cuts compressor power before damage occurs. The \u003cstrong\u003elow pressure switch (312926-258, rated 55-23 psi)\u003c\/strong\u003e protects the compressor from running under low-charge or restriction conditions. When either switch fails or trips without resetting, the unit will typically lock out on a fault code, short-cycle, or refuse to enter the cooling or heating cycle entirely.\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 | SPST normally closed | Factory Authorized Part | Sensata-manufactured | Replaces 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 | SPST normally closed | Factory Authorized Part | Sensata PS80-02-F1270 | Replaces 312926258\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM Carrier pressure switches are precision-calibrated to exact cut-out\/cut-in tolerances. Generic alternatives frequently deviate from rated trip points, risking compressor failure from under- or over-pressure operation — especially critical on R-410A systems operating at higher refrigerant pressures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — System refrigerant must be recovered before replacing refrigerant-side pressure switches. Tools required: manifold gauge set, refrigerant recovery machine, spanner wrench, multimeter, and torque wrench. \u003cem\u003eEPA Section 608 certification required.\u003c\/em\u003e Photograph all wiring connections prior to removal. Leak-check all fittings after reinstallation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Both switches ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Both switches are factory-specified replacements for the \u003cstrong\u003eCarrier PH13NB048000ABAA\u003c\/strong\u003e packaged heat pump unit. The PH13NB series is a 4-ton (048 = 48,000 BTU) R-410A single-stage packaged heat pump. Always verify part numbers against your unit's data plate before ordering. Have a question about fitment? Our HVAC parts specialists confirm compatibility before you buy — \u003cstrong\u003eorder now and ships today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641912119667,"sku":"CARRIE-PH13NB048000ABAA-PRESSURE_SWITCH-312926-252","price":61.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641912152435,"sku":"CARRIE-PH13NB048000ABAA-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_805c5f07-947f-4139-bfac-c27243e7caa5.jpg?v=1775033026","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph13nb048000abaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}