{"product_id":"carrier-ch14nb02400gaaaa-pressure-switch-1vlc9v","title":"OEM Carrier Pressure Switch High\/Low for CH14NB02400GAAAA","description":"\u003ch1\u003eOEM Carrier High \u0026amp; Low Pressure Switch for Model CH14NB02400GAAAA\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 CH14NB02400GAAAA\u003c\/strong\u003e heat pump condenser. Pressure switches monitor refrigerant circuit pressures and protect the compressor by shutting down operation if pressures fall outside safe operating limits. When either switch fails, you'll typically see the system lock out, short-cycle, or display a fault code without completing a full heating or cooling cycle.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 312926-252 — High Pressure Switch | 312926-258 — Low Pressure Switch | Factory-calibrated trip points | 24V control circuit compatible | Spade terminal connections\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 CH14NB02400GAAAA refrigerant circuit. Generic substitutes often carry wider pressure tolerances, risking nuisance lockouts or, worse, insufficient compressor protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant circuit work must be performed by an EPA 608-certified technician. Tools needed: manifold gauge set, flathead screwdriver, multimeter, and spade terminal connectors. Always recover refrigerant before disconnecting high-side components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed by 3 PM EST ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits Carrier model \u003cstrong\u003eCH14NB02400GAAAA\u003c\/strong\u003e heat pump condensers. Select the correct switch — \u003cstrong\u003e312926-252\u003c\/strong\u003e for the high-pressure circuit or \u003cstrong\u003e312926-258\u003c\/strong\u003e for the low-pressure circuit — and verify part number against your unit's wiring diagram before ordering. Our fitment team is available to confirm compatibility prior to purchase. In stock and ready to ship today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909613998451,"sku":"CARRIE-CH14NB02400GAAAA-PRESSURE_SWITCH-312926-252","price":27.0,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909614031219,"sku":"CARRIE-CH14NB02400GAAAA-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_1a0da043-dbb5-4197-a900-bb45e6b1f3c0.jpg?v=1782930534","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ch14nb02400gaaaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}