{"product_id":"carrier-ch14na04200gaaaa-pressure-switch-1vlc9v","title":"OEM Carrier Pressure Switch High \u0026 Low for CH14NA04200GAAAA","description":"\u003ch1\u003eOEM Carrier High \u0026amp; Low Pressure Switch for Model CH14NA04200GAAAA\u003c\/h1\u003e\u003cp\u003eThese OEM pressure switches — \u003cstrong\u003e312926-252 (High Pressure Switch)\u003c\/strong\u003e and \u003cstrong\u003e312926-258 (Low Pressure Switch)\u003c\/strong\u003e — are the factory-specified replacements for the \u003cstrong\u003eCarrier CH14NA04200GAAAA\u003c\/strong\u003e condensing unit. Pressure switches monitor refrigerant-side pressures and protect the compressor from operating under unsafe high- or low-pressure conditions. When either switch fails or trips, the system will lock out, refuse to start, or shut down immediately after attempting to run — often displaying a fault code on the control board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e High Pressure Switch — Part# 312926-252 | Low Pressure Switch — Part# 312926-258 | Factory-calibrated trip points | SPST normally-closed contact configuration | Direct OEM replacement — no field calibration required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM pressure switches are calibrated to exact factory trip-point specifications for the CH14NA04200GAAAA refrigerant circuit. Generic substitutes often carry wider pressure tolerances, risking nuisance trips or — more critically — failing to protect the compressor from a genuine fault condition.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Refrigerant-side work must be performed by an EPA 608-certified technician. Tools required: manifold gauge set, adjustable wrench, leak detection solution, multimeter. Always recover refrigerant per EPA regulations before disconnecting pressure switch fittings. Photograph all wiring connections prior to removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the \u003cstrong\u003eCarrier CH14NA04200GAAAA\u003c\/strong\u003e condensing unit. Verify your existing switch part number (312926-252 for high-side or 312926-258 for low-side) against your unit's wiring diagram or data label before ordering. If you are unsure which switch has failed, our HVAC parts specialists can help confirm fitment before you buy — contact us before placing your order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909615833459,"sku":"CARRIE-CH14NA04200GAAAA-PRESSURE_SWITCH-312926-252","price":27.0,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909615866227,"sku":"CARRIE-CH14NA04200GAAAA-PRESSURE_SWITCH-312926-252-GEN","price":19.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-single-312926-252_0e81272c-f967-4598-b38a-044400abd962.jpg?v=1782930448","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ch14na04200gaaaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}