{"product_id":"carrier-ph15nb03000gacaa-pressure-switch-1vlc9v","title":"OEM Carrier Low Pressure Switch 55-23# for PH15NB03000GACAA","description":"\u003ch1\u003eOEM Carrier Low Pressure Switch 55-23# (312926-258) for Model PH15NB03000GACAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM low pressure switch for the \u003cstrong\u003eCarrier PH15NB03000GACAA\u003c\/strong\u003e heat pump. The low pressure switch continuously monitors refrigerant pressure on the suction side of the system. When pressure drops below the factory-set threshold — due to low refrigerant charge, a blocked filter, or a failing metering device — the switch opens its circuit and shuts down the compressor to prevent catastrophic damage. Typical failure symptoms include: compressor lockout on a call for cooling or heating, short-cycling (system starts and stops within seconds), or a fault code indicating low-pressure trip on the control board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 55-23# pressure rating | Brass inlet connector | Precision-calibrated diaphragm | Pre-wired color-coded leads | Factory-matched OEM tolerances\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier Factory Authorized Part (FAP). OEM switches are factory-calibrated to exact cut-in\/cut-out pressures. Generic alternatives can drift out of spec, causing nuisance trips or — worse — failing to protect the compressor when pressure truly drops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Recover refrigerant before disconnecting the switch from the refrigerant circuit. Tools needed: manifold gauge set, recovery machine, wire connectors or crimper. Always verify system charge after reinstallation and leak-check the port. Not a DIY repair in most jurisdictions — EPA 608 certification required for refrigerant handling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse. Free shipping on qualifying orders.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003ePH15NB03000GACAA\u003c\/strong\u003e heat pump. Cross-references: Sensata PS80-02-F1270, PSL 312926-258, 300R18. Always verify the part number on your unit's wiring diagram or data plate before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641668555123,"sku":"CARRIE-PH15NB03000GACAA-PRESSURE_SWITCH-312926-258","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641668587891,"sku":"CARRIE-PH15NB03000GACAA-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_86f984f3-d8f6-4cd9-bdf4-d3b129b9d112.jpg?v=1775036337","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph15nb03000gacaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}