{"product_id":"carrier-ph4ang030000bbaa-pressure-switch-1vlc9v","title":"OEM Carrier High Pressure Switch 670-470# for PH4ANG030000BBAA","description":"\u003ch1\u003eOEM Carrier High Pressure Switch 670-470 PSI for Model PH4ANG030000BBAA\u003c\/h1\u003e\u003cp\u003eThis OEM high pressure switch (part number \u003cstrong\u003e312926-252\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PH4ANG030000BBAA\u003c\/strong\u003e heat pump system. The high pressure switch is a critical refrigerant-circuit safety control that continuously monitors system discharge pressure. When refrigerant pressure exceeds the upper threshold (670 PSI cut-out), the switch opens the control circuit and shuts down the compressor to prevent catastrophic system damage. When pressure drops back to the reset point (470 PSI cut-in), normal operation can resume. Common failure symptoms include nuisance high-pressure lockouts, the system refusing to start, or fault codes indicating a high-pressure trip on the control board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Cut-Out: 670 PSI | Cut-In: 470 PSI | OEM Part Number: 312926-252 | Factory-certified fit for Carrier PH4ANG030000BBAA | Genuine Carrier Factory Authorized Part\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier component with factory-calibrated trip points. Aftermarket pressure switches often carry ±5–10% PSI tolerance, risking nuisance trips or — worse — allowing the system to run outside safe pressure limits and damaging the compressor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant system work requires EPA 608 certification. A licensed HVAC technician must recover refrigerant before accessing high-side components. Tools needed: manifold gauge set, refrigerant recovery machine, adjustable wrench, multimeter for continuity verification 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 Engineered as a direct OEM replacement for \u003cstrong\u003eCarrier model PH4ANG030000BBAA\u003c\/strong\u003e. Always verify the PSI rating on your existing switch and confirm your model's data plate before ordering. Our HVAC parts specialists are available to confirm fitment — reach out before you order if you have any questions. \u003cstrong\u003eOrder now and ship today!\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641278058867,"sku":"CARRIE-PH4ANG030000BBAA-PRESSURE_SWITCH-312926-252","price":60.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641278091635,"sku":"CARRIE-PH4ANG030000BBAA-PRESSURE_SWITCH-312926-252-GEN","price":53.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-312926-252_dcf5d5a3-8159-4a8a-aff5-4700364d2b8d.jpg?v=1775033499","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph4ang030000bbaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}