{"product_id":"carrier-ph3ana030000baaa-pressure-switch-1vlc9v","title":"OEM Carrier High Pressure Switch 670-470# for PH3ANA030000BAAA","description":"\u003ch1\u003eOEM Carrier High Pressure Switch 670\/470 PSI for Model PH3ANA030000BAAA\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 PH3ANA030000BAAA\u003c\/strong\u003e packaged heat pump unit. The high pressure switch continuously monitors refrigerant-side discharge pressure and opens the control circuit when system pressure exceeds safe operating limits — protecting the compressor from catastrophic failure. When this switch fails or trips on a fault condition, you'll typically see a system lockout, nuisance high-pressure fault codes, or a unit that shuts down shortly after startup with no obvious refrigerant or airflow restriction.\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 | Genuine Carrier Factory Authorized Part\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM switch manufactured to exact factory pressure thresholds. Aftermarket switches frequently carry ±10–15% tolerance variances that can allow unsafe pressure operation or cause false trips, shortening compressor life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Refrigerant-side component. EPA Section 608 certification required to work on refrigerant circuits. Tools needed: manifold gauge set, refrigerant recovery equipment, service wrench. Always recover refrigerant before replacing. Verify pressures after reinstallation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Covered by Carrier's manufacturer warranty. Ships same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits Carrier model \u003cstrong\u003ePH3ANA030000BAAA\u003c\/strong\u003e packaged heat pump. Verify part number 312926-252 against your unit's wiring diagram and 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":62641441931635,"sku":"CARRIE-PH3ANA030000BAAA-PRESSURE_SWITCH-312926-252","price":61.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641441964403,"sku":"CARRIE-PH3ANA030000BAAA-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_33f78dcd-cc1c-4a7d-8045-61e8aeb98272.jpg?v=1775033487","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph3ana030000baaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}