{"product_id":"carrier-ph4ang024000bbaa-pressure-switch-1vlc9v","title":"OEM Carrier High Pressure Switch 312926-252 for PH4ANG024000BBAA","description":"\u003ch1\u003eOEM Carrier High Pressure Switch 312926-252 for Model PH4ANG024000BBAA\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 PH4ANG024000BBAA\u003c\/strong\u003e heat pump system. The high pressure switch is a critical safety component that continuously monitors refrigerant pressure on the high side of the refrigerant circuit. When system pressure exceeds the factory-set threshold — due to a dirty condenser coil, refrigerant overcharge, blocked airflow, or a failing fan motor — the switch opens the control circuit and triggers a system lockout, protecting the compressor from catastrophic damage. Common failure symptoms include nuisance high-pressure lockouts, a system that starts briefly then shuts off, or a unit that simply refuses to run despite the thermostat calling for operation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e High-side refrigerant pressure switch | Factory-calibrated trip point | OEM direct replacement for part number 312926-252 | Designed for R-410A refrigerant systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier part, ensuring factory-exact pressure trip and reset thresholds. Aftermarket switches frequently use looser tolerances, which can result in false lockouts or — more dangerously — failure to trip when pressure is critically high, risking compressor failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Refrigerant system must be recovered before replacing. Tools needed: refrigerant recovery machine, manifold gauge set, adjustable wrench, leak-check solution. This repair should be performed by an EPA 608-certified technician.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before 3 PM ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003ePH4ANG024000BBAA\u003c\/strong\u003e heat pump. Always verify refrigerant type and pressure ratings on your unit's data plate before ordering. Our technical 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":62641290051955,"sku":"CARRIE-PH4ANG024000BBAA-PRESSURE_SWITCH-312926-252","price":43.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641290084723,"sku":"CARRIE-PH4ANG024000BBAA-PRESSURE_SWITCH-312926-252-GEN","price":38.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-312926-252_e9dabeab-33a8-414b-86d9-dd5c178342f1.jpg?v=1775033183","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph4ang024000bbaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}