{"product_id":"carrier-ph4ang036000bdaa-pressure-switch-1vlc9v","title":"OEM Carrier High Pressure Switch 670-470# for PH4ANG036000BDAA","description":"\u003ch1\u003eOEM Carrier High Pressure Switch 670-470# for Model PH4ANG036000BDAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM high pressure switch (part number \u003cstrong\u003e312926-252\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier PH4ANG036000BDAA\u003c\/strong\u003e packaged heat pump unit. The high pressure switch continuously monitors refrigerant discharge pressure on the high side of the refrigeration circuit. When system pressure exceeds the cut-out threshold — caused by a dirty condenser coil, failed condenser fan motor, refrigerant overcharge, or restricted airflow — the switch opens the control circuit and locks out the unit to prevent compressor damage. Symptoms of a failed or nuisance-tripping high pressure switch include: the unit shutting down shortly after start-up, a system lockout fault code on the thermostat or control board, or the compressor cycling off repeatedly on a hot day even with a clean coil.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 670 PSI cut-out | 470 PSI cut-in | OEM part number 312926-252 | Factory-rated for R-410A refrigerant systems | Certifications: EN12263, EN60730-2-6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier Factory Authorized Part — engineered to exact pressure thresholds for the PH4ANG036000BDAA compressor circuit. Aftermarket pressure switches often carry ±5–10% pressure tolerance variation, which can allow damaging over-pressure events before the switch opens.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — High pressure switch replacement requires recovering refrigerant if the switch is installed in a pressurized line. A licensed EPA 608-certified technician is required. Tools needed: manifold gauge set, refrigerant recovery unit, torque wrench, and multimeter to confirm switch continuity before re-commissioning.\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 for the Carrier \u003cstrong\u003ePH4ANG036000BDAA\u003c\/strong\u003e packaged heat pump unit (3-ton, R-410A). Always verify your unit's data plate and existing switch pressure ratings before ordering. Our team is available to confirm fitment — contact us before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641251680627,"sku":"CARRIE-PH4ANG036000BDAA-PRESSURE_SWITCH-312926-252","price":61.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641251713395,"sku":"CARRIE-PH4ANG036000BDAA-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_ab8c748a-3d83-412e-9435-ffd0afb12121.jpg?v=1775033501","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph4ang036000bdaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}