{"product_id":"carrier-ph3ana036000bbaa-pressure-switch-1vlc9v","title":"OEM Carrier High Pressure Switch 670\/470 PSI for PH3ANA036000BBAA","description":"\u003ch1\u003eOEM Carrier High Pressure Switch 670\/470 PSI for Model PH3ANA036000BBAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM high pressure switch (part number \u003cstrong\u003e312926-252\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier PH3ANA036000BBAA\u003c\/strong\u003e packaged heat pump unit. The high pressure switch is a critical refrigerant-circuit safety control that continuously monitors system discharge pressure. When refrigerant pressure climbs above the factory cutout threshold — due to a dirty condenser coil, failed condenser fan motor, refrigerant overcharge, or restricted airflow — the switch opens the control circuit and shuts down the compressor to prevent catastrophic system damage. Symptoms of a failed or nuisance-tripping high pressure switch include sudden system lockout, compressor short-cycling, or an error code indicating high-pressure fault on the board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Cutout: 670 PSIG | Reset: 470 PSIG | Automatic reset | Factory-matched safety tolerances for R-410A refrigerant systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM switches are calibrated to exact Carrier factory cutout and reset pressures. Aftermarket alternatives may trip at incorrect thresholds, causing premature lockouts or — worse — failing to protect the compressor at dangerous pressures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant circuit work requires an EPA Section 608 certified technician. Tools needed: manifold gauge set, torque wrench, leak detector. Always recover refrigerant before opening the high-side circuit. Verify system pressures after reinstallation.\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 model PH3ANA036000BBAA\u003c\/strong\u003e. Verify the 670\/470 PSI cutout\/reset rating against your unit's data plate and wiring diagram before ordering. Our fitment team is available to confirm compatibility prior to purchase — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641432494451,"sku":"CARRIE-PH3ANA036000BBAA-PRESSURE_SWITCH-312926-252","price":60.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641432527219,"sku":"CARRIE-PH3ANA036000BBAA-PRESSURE_SWITCH-312926-252-GEN","price":52.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-312926-252_0afd8eed-0e99-42fc-bcf6-f7b674434676.jpg?v=1775033518","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph3ana036000bbaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}