{"product_id":"carrier-ph3ana048000bbaa-pressure-switch-1vlc9v","title":"OEM Carrier High Pressure Switch 670-470# for PH3ANA048000BBAA","description":"\u003ch1\u003eOEM Carrier High Pressure Switch 312926-252 — 670-470# for Model PH3ANA048000BBAA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM high pressure switch (part number \u003cstrong\u003e312926-252\u003c\/strong\u003e), factory-specified for the \u003cstrong\u003eCarrier PH3ANA048000BBAA\u003c\/strong\u003e packaged heat pump unit. The high pressure switch is a critical safety device that monitors refrigerant discharge pressure on the high side of the refrigeration circuit. When system pressure exceeds the cut-out setpoint, the switch opens the control circuit and shuts down the compressor to prevent catastrophic damage. A failed or out-of-spec switch typically manifests as nuisance high-pressure lockouts, compressor short cycling, or a system that won't restart without a manual reset — even when refrigerant charge and airflow are correct.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Cut-out (high) setpoint: 670 PSI | Cut-in (reset) setpoint: 470 PSI | Normally closed (NC) control circuit contact | OEM part number: 312926-252\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier factory-authorized part, manufactured to exact pressure setpoint tolerances. Generic or off-brand pressure switches often carry wider tolerance bands, risking either premature nuisance trips or — more dangerously — failure to open at true over-pressure conditions, which can lead to compressor failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant system work requires an EPA Section 608 certified technician. Tools needed: manifold gauge set, refrigerant recovery equipment, adjustable wrench, multimeter. Always recover refrigerant before replacing the switch, and verify system pressure is within spec after reinstallation before restarting the unit.\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 the Carrier \u003cstrong\u003ePH3ANA048000BBAA\u003c\/strong\u003e packaged heat pump. Verify the 670\/470 PSI pressure rating against your unit's data plate and service manual before ordering — using an incorrect setpoint switch can void your equipment warranty and create unsafe operating conditions. Our team is available to confirm fitment before you order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641414013299,"sku":"CARRIE-PH3ANA048000BBAA-PRESSURE_SWITCH-312926-252","price":61.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641414046067,"sku":"CARRIE-PH3ANA048000BBAA-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_98922e97-b09f-4ab8-9dbe-d6651ab70c47.jpg?v=1775033491","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph3ana048000bbaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}