{"product_id":"carrier-ph13na048000abaa-pressure-switch-1vlc9v","title":"OEM Carrier High \u0026 Low Pressure Switch Kit for PH13NA048000ABAA","description":"\u003ch1\u003eOEM Carrier High \u0026amp; Low Pressure Switch Kit (312926-252 \/ 312926-258) for Model PH13NA048000ABAA\u003c\/h1\u003e\u003cp\u003eThese two OEM pressure switches are the factory-authorized replacements for the \u003cstrong\u003eCarrier PH13NA048000ABAA\u003c\/strong\u003e heat pump. The \u003cstrong\u003ehigh pressure switch (312926-252, 670\/470 PSI)\u003c\/strong\u003e protects the compressor by cutting power when refrigerant pressure climbs dangerously high — typically triggered by a blocked condenser coil, failed fan motor, or refrigerant overcharge. The \u003cstrong\u003elow pressure switch (312926-258, 55\/23 PSI)\u003c\/strong\u003e guards against low-side conditions such as refrigerant undercharge or a restricted metering device, preventing compressor damage from vapor slugging. When either switch fails or trips without reset, the system will lock out, short-cycle, or fail to cool\/heat entirely.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Numbers:\u003c\/strong\u003e 312926-252 (High Pressure Switch, 670\/470 PSI cutout\/reset) | 312926-258 (Low Pressure Switch, 55\/23 PSI cutout\/reset) | Factory Authorized OEM Carrier parts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM switches are factory-calibrated to exact PSI setpoints for the PH13NA048000ABAA refrigerant circuit. Aftermarket alternatives often carry ±10–15% pressure tolerance drift, risking nuisance trips or — worse — inadequate compressor protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires recovery of R-410A refrigerant before accessing the refrigerant circuit. Tools needed: manifold gauge set, recovery machine, torque wrench, multimeter. EPA 608 certification required. Always confirm system pressure before declaring a switch faulty vs. a true refrigerant charge issue.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. Ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the \u003cstrong\u003eCarrier PH13NA048000ABAA\u003c\/strong\u003e packaged heat pump unit. Verify both PSI ratings and connector type against your unit's wiring diagram before ordering. Buying both switches together ensures complete high\/low-side protection and eliminates a return visit. Questions about fitment? Our HVAC parts specialists verify compatibility before you order — in stock and ships today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641932829043,"sku":"CARRIE-PH13NA048000ABAA-PRESSURE_SWITCH-312926-252","price":65.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641932861811,"sku":"CARRIE-PH13NA048000ABAA-PRESSURE_SWITCH-312926-252-GEN","price":57.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-312926-252_1e0e1e2e-c857-46e9-b742-c7deb65718f5.jpg?v=1775032992","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph13na048000abaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}