{"product_id":"carrier-ph4ang030000baaa-pressure-switch-1vlc9v","title":"OEM Carrier High Pressure Switch 670\/470 PSI for PH4ANG030000BAAA","description":"\u003ch1\u003eOEM Carrier High Pressure Switch 670\/470 PSI — Part 312926-252 for Model PH4ANG030000BAAA\u003c\/h1\u003e\u003cp\u003eThis OEM high pressure switch (part #312926-252) is the factory-specified safety control for the \u003cstrong\u003eCarrier PH4ANG030000BAAA\u003c\/strong\u003e packaged heat pump. Its job is critical: it continuously monitors refrigerant pressure on the high side of the refrigerant circuit and cuts out the compressor the instant pressure exceeds the safe threshold. Without a properly functioning high pressure switch, a refrigerant blockage, failed condenser fan motor, or overcharge condition can destroy your compressor — a repair that costs 10–20× more than this switch. Common failure symptoms include nuisance high-pressure lockout faults, the system short-cycling on hot days, or a fault code indicating a high-pressure trip with no obvious refrigerant issue.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Cut-out: 670 PSI | Cut-in (auto-reset): 470 PSI | OEM Part Number: 312926-252 | Factory-matched pressure thresholds for R-410A systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM part with factory-calibrated cut-out and cut-in setpoints. Generic pressure switches often carry wider PSI tolerances that can allow unsafe operating pressures or cause nuisance trips — either outcome risks compressor damage or failed warranty claims.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant circuit must be recovered before accessing the high-side port. Tools required: manifold gauge set, adjustable wrench, wire crimpers\/connectors, multimeter. Installation by an EPA 608-certified technician is strongly recommended. Always verify system pressure readings after replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer 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 the direct OEM replacement for \u003cstrong\u003eCarrier PH4ANG030000BAAA\u003c\/strong\u003e packaged heat pump units. Always cross-reference the part number on your existing switch and confirm your unit's refrigerant type before ordering. Our fitment team is available to verify compatibility before you buy — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641281859955,"sku":"CARRIE-PH4ANG030000BAAA-PRESSURE_SWITCH-312926-252","price":61.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641281892723,"sku":"CARRIE-PH4ANG030000BAAA-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_caf4b37b-f2ff-4b57-97f4-a08571f4110b.jpg?v=1775033528","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph4ang030000baaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}