{"product_id":"carrier-ph15nb03600gacaa-pressure-switch-1vlc9v","title":"OEM Carrier Low Pressure Switch 55-23# for PH15NB03600GACAA","description":"\u003ch1\u003eOEM Carrier Low Pressure Switch 55-23# (312926-258) for Model PH15NB03600GACAA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM factory-replacement low pressure switch for the \u003cstrong\u003eCarrier PH15NB03600GACAA\u003c\/strong\u003e heat pump. The low pressure switch continuously monitors refrigerant pressure on the low side of the refrigerant circuit. When pressure drops below the factory-set threshold — due to a refrigerant leak, restricted metering device, or loss of charge — the switch opens and interrupts the compressor circuit, protecting the system from catastrophic damage. Common failure symptoms include the compressor refusing to start, the unit going into lockout mode, or a fault code indicating a low-pressure trip event.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Specs:\u003c\/strong\u003e OEM Part # 312926-258 | 55-23# pressure rating (opens at 55 PSI, resets at 23 PSI) | Factory-calibrated set points | Pre-wired leads for direct plug-in installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier factory-authorized part, ensuring exact pressure set-point calibration. Aftermarket switches often carry ±5–10% pressure tolerances, which can cause nuisance trips or, worse, fail to protect the compressor under true low-charge conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Refrigerant recovery is required before replacing this switch on a live system. Tools needed: manifold gauge set, adjustable wrench, multimeter, and refrigerant recovery equipment. Always verify the system is in a recovered or isolated state before disconnecting the switch. A licensed HVAC technician is recommended.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. 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 Designed for the \u003cstrong\u003eCarrier PH15NB03600GACAA\u003c\/strong\u003e heat pump. Verify your existing switch's pressure rating against the data plate or wiring diagram before ordering — confirm the 55-23# set points match. Have questions about fitment? Our HVAC parts specialists verify compatibility before you order — call or chat today. \u003cstrong\u003eIn stock and ships today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641668424051,"sku":"CARRIE-PH15NB03600GACAA-PRESSURE_SWITCH-312926-258","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641668456819,"sku":"CARRIE-PH15NB03600GACAA-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_dea54aad-22fc-41f0-a074-24d7b6ba5d69.jpg?v=1775036339","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph15nb03600gacaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}