{"product_id":"carrier-ph4ang036000bcaa-pressure-switch-1vlc9v","title":"OEM Carrier High Pressure Switch 670\/470 PSI — PH4ANG036000BCAA","description":"\u003ch1\u003eOEM Carrier High Pressure Switch 312926-252 for Model PH4ANG036000BCAA\u003c\/h1\u003e\u003cp\u003eThis OEM high pressure switch (part number 312926-252) is the factory-specified safety control for the \u003cstrong\u003eCarrier PH4ANG036000BCAA\u003c\/strong\u003e heat pump. The high pressure switch continuously monitors refrigerant discharge pressure and opens the control circuit when pressure exceeds safe operating limits — protecting the compressor from catastrophic overload. When this switch fails or trips on nuisance faults, you'll typically see the system locking out on a high-pressure fault code, the compressor shutting down unexpectedly, or the unit failing to cool or heat despite the fan running normally.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 670 PSI cutout \/ 470 PSI reset | Factory-rated for R-410A refrigerant systems | SPST normally-closed safety switch | Rated to EN12263 \/ EN60730-2-6 safety standards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM part — factory-calibrated to exact cutout and reset pressures. Aftermarket switches often carry wider PSI tolerances, risking either nuisance trips or, worse, under-protection of the compressor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant system access is required. Tools needed: manifold gauge set, refrigerant-rated wrench set, and a multimeter to confirm continuity before and after replacement. Must be installed by an EPA 608-certified technician.\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 PH4ANG036000BCAA\u003c\/strong\u003e (3-ton heat pump). Always verify the cutout\/reset PSI rating and refrigerant type on your unit's data plate 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":62641255645555,"sku":"CARRIE-PH4ANG036000BCAA-PRESSURE_SWITCH-312926-252","price":61.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641255678323,"sku":"CARRIE-PH4ANG036000BCAA-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_d219ae08-f606-48be-a897-41e54c33dbc2.jpg?v=1775033545","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph4ang036000bcaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}