{"product_id":"carrier-ph15nb04800gacaa-pressure-switch-1vlc9v","title":"OEM Carrier Low Pressure Switch 55-23# for PH15NB04800GACAA","description":"\u003ch1\u003eOEM Carrier 55-23# Low Pressure Switch 312926-258 for Model PH15NB04800GACAA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM factory-specified low pressure switch for the \u003cstrong\u003eCarrier PH15NB04800GACAA\u003c\/strong\u003e heat pump. Part number \u003cstrong\u003e312926-258\u003c\/strong\u003e, this 55-23# switch continuously monitors refrigerant pressure on the low side of the refrigerant circuit. When system pressure drops below the threshold — due to a refrigerant leak, blocked filter, or failed metering device — the switch opens and cuts power to the compressor, preventing costly damage from running under inadequate pressure conditions. Common symptoms of a failed low pressure switch include the system not starting, the compressor cycling off immediately after startup, or a fault code indicating a low-pressure lockout.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 55 PSI cut-out \/ 23 PSI cut-in | Factory-calibrated set points | OEM part number 312926-258 | Also cross-references: Sensata PS80-02-F1270, PSL 312926-258\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier Factory Authorized Part with precision-calibrated set points matched to the PH15NB04800GACAA's refrigerant circuit design. Aftermarket switches often use wider pressure tolerances, risking nuisance trips or — worse — inadequate compressor protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant system work requires an EPA 608 certified technician. Tools needed: manifold gauge set, refrigerant recovery equipment, wire crimpers, and a multimeter to verify switch continuity before reinstall. Always recover refrigerant before disconnecting the switch.\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 warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM replacement for \u003cstrong\u003eCarrier model PH15NB04800GACAA\u003c\/strong\u003e heat pumps. Verify the 55-23# pressure rating against your unit's data plate and wiring diagram before ordering. Our fitment team is available to confirm compatibility — reach out before you order and we'll verify your application.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641668030835,"sku":"CARRIE-PH15NB04800GACAA-PRESSURE_SWITCH-312926-258","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641668063603,"sku":"CARRIE-PH15NB04800GACAA-PRESSURE_SWITCH-312926-258-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-312926-258_c9815229-85e2-4dd0-9539-48cb521d93b3.jpg?v=1775036344","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph15nb04800gacaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}