{"product_id":"carrier-ph3ana036000baaa-pressure-switch-1vlc9v","title":"OEM Carrier High Pressure Switch 670\/470 PSI for PH3ANA036000BAAA","description":"\u003ch1\u003eOEM Carrier High Pressure Switch 670\/470 PSI for Model PH3ANA036000BAAA\u003c\/h1\u003e\u003cp\u003eThis OEM high pressure switch (part number \u003cstrong\u003e312926-252\u003c\/strong\u003e) is the factory-specified safety control replacement for the \u003cstrong\u003eCarrier PH3ANA036000BAAA\u003c\/strong\u003e packaged heat pump unit. The high pressure switch continuously monitors refrigerant circuit pressure and cuts power to the compressor the moment pressure exceeds the safe upper threshold. When this switch fails or trips, your system may lock out entirely, short-cycle, or refuse to cool or heat — symptoms that are often misdiagnosed as compressor or refrigerant issues. Always confirm the switch is the root cause before replacing refrigerant or larger components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Cut-out pressure: 670 PSIG | Cut-in (reset) pressure: 470 PSIG | Factory-calibrated safety control | OEM part number: 312926-252\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM part built to exact factory pressure tolerances. Aftermarket switches frequently ship with calibration drift that can allow dangerously high head pressure or cause nuisance trips, accelerating compressor wear and voiding equipment warranties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant circuit work requires an EPA 608 certified technician. The system must be recovered and the circuit depressurized before removal. Tools needed: manifold gauge set, recovery machine, torque wrench, and leak detector. Always verify the new switch reads correct cut-out and cut-in pressure after recharge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. Ships same business day from stock — order by 5 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM replacement for \u003cstrong\u003eCarrier PH3ANA036000BAAA\u003c\/strong\u003e packaged heat pump systems. Verify refrigerant type and system operating pressure range against your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you purchase.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641436066163,"sku":"CARRIE-PH3ANA036000BAAA-PRESSURE_SWITCH-312926-252","price":61.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641436098931,"sku":"CARRIE-PH3ANA036000BAAA-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_bf45bb31-d64f-4d37-8279-797296a0e5a0.jpg?v=1775033516","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph3ana036000baaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}