{"product_id":"carrier-ph15nb01800gacaa-pressure-switch-1vlc9v","title":"OEM Carrier Low Pressure Switch 55-23# for PH15NB01800GACAA","description":"\u003ch1\u003eOEM Carrier Low Pressure Switch 55-23# for Model PH15NB01800GACAA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM low pressure switch (part number \u003cstrong\u003e312926-258\u003c\/strong\u003e), factory-specified for the \u003cstrong\u003eCarrier PH15NB01800GACAA\u003c\/strong\u003e heat pump. The low pressure switch continuously monitors refrigerant pressure on the suction side of the system. When pressure drops below the factory set point — caused by a refrigerant leak, a blocked metering device, or a failing expansion valve — the switch opens the control circuit, cutting power to the compressor to prevent catastrophic damage. Common symptoms of a failed low pressure switch include the compressor refusing to start, the system locking out on a fault code, or the unit cycling off shortly after startup with no cooling or heating output.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 55-23# pressure rating | Factory-calibrated cut-out\/cut-in set points | Brass inlet connector | Precision-calibrated diaphragm | Pre-wired color-coded leads for drop-in replacement\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 cut-out and cut-in tolerances. Aftermarket substitutes may trip at incorrect pressures, causing nuisance lockouts or — worse — failing to protect the compressor under a true low-pressure fault condition.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Recover all refrigerant before disconnecting the switch (EPA Section 608 required). Tools needed: manifold gauge set, adjustable wrench, multimeter. Confirm continuity across terminals before recharging the system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as the factory-direct replacement for \u003cstrong\u003eCarrier model PH15NB01800GACAA\u003c\/strong\u003e. Verify part number 312926-258 against your unit's wiring diagram or data plate before ordering. Our HVAC parts specialists are available to confirm fitment — order with confidence and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641668686195,"sku":"CARRIE-PH15NB01800GACAA-PRESSURE_SWITCH-312926-258","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641668718963,"sku":"CARRIE-PH15NB01800GACAA-PRESSURE_SWITCH-312926-258-GEN","price":65.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-312926-258_acc06135-da9b-44a9-a69c-818a59ff55a7.jpg?v=1775036335","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph15nb01800gacaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}