{"product_id":"carrier-ph15nb01800gbbaa-pressure-switch-1vlc9v","title":"OEM Carrier High \u0026 Low Pressure Switch Kit for PH15NB01800GBBAA","description":"\u003ch1\u003eOEM Carrier High \u0026amp; Low Refrigerant Pressure Switch Kit for Model PH15NB01800GBBAA\u003c\/h1\u003e\u003cp\u003eThis OEM-matched kit includes both the \u003cstrong\u003ehigh pressure switch (312926-252)\u003c\/strong\u003e and the \u003cstrong\u003elow pressure switch (312926-258)\u003c\/strong\u003e factory-specified for the \u003cstrong\u003eCarrier PH15NB01800GBBAA\u003c\/strong\u003e packaged heat pump unit. Refrigerant-side pressure switches are critical safety and operational components: the high-side switch protects the compressor from dangerously elevated discharge pressure, while the low-side switch guards against loss of refrigerant charge or evaporator freeze-up. Common failure symptoms include nuisance lockouts, compressor short-cycling, error codes indicating a pressure fault, or the system refusing to enter heating or cooling mode entirely.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e High Pressure Switch OEM Part 312926-252 | Low Pressure Switch OEM Part 312926-258 | Factory-calibrated cut-out and cut-in setpoints | Direct plug-in OEM connector — no splicing required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM pressure switches are calibrated to Carrier's exact pressure thresholds for R-410A systems. Aftermarket alternatives often carry wider setpoint tolerances, risking compressor damage or nuisance trips that generic parts cannot reliably prevent.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant system work requires EPA 608 certification. Tools needed: manifold gauge set, torque wrench, multimeter for continuity verification, and refrigerant recovery equipment. Always recover refrigerant before replacing low-side switch; high-side switch replacement also requires system depressurization.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty on both switches. Orders ship same business day from our warehouse when placed before cut-off.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e This kit is designed for the \u003cstrong\u003eCarrier PH15NB01800GBBAA\u003c\/strong\u003e 1.5-ton packaged heat pump unit. Verify your unit's data plate and existing switch part numbers before ordering to confirm fitment. Bundling both switches ensures a complete refrigerant-circuit pressure protection restore in a single service call — eliminating callbacks. Questions about fitment? Our HVAC parts specialists verify compatibility before you order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641676779891,"sku":"CARRIE-PH15NB01800GBBAA-PRESSURE_SWITCH-312926-252","price":85.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641676812659,"sku":"CARRIE-PH15NB01800GBBAA-PRESSURE_SWITCH-312926-252-GEN","price":74.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-312926-252_9ffb5680-998c-44bd-b788-4fe6ce51e3c2.jpg?v=1775033109","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph15nb01800gbbaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}