{"product_id":"carrier-py2ppb048090aa-pressure-switch-jria74","title":"OEM Carrier High Pressure Switch 395\/295 PSI for PY2PPB048090AA","description":"\u003ch1\u003eOEM Carrier High Pressure Switch 395\/295 PSI — HK02ZA395 for Model PY2PPB048090AA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier high pressure switch (part number \u003cstrong\u003eHK02ZA395\u003c\/strong\u003e), the factory-specified refrigerant-side safety device for the \u003cstrong\u003eCarrier PY2PPB048090AA\u003c\/strong\u003e packaged heat pump system. The high pressure switch continuously monitors refrigerant discharge pressure and opens the circuit to shut down the compressor when pressure exceeds a safe threshold — protecting the compressor from catastrophic over-pressure damage. When this switch fails or trips, you'll typically experience sudden system shutdowns, nuisance lockouts, or the unit running briefly before cutting off on a fault code. A faulty switch that stays open will prevent the system from running at all; one that fails closed removes a critical safety layer from your equipment.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Opens at 395 PSI | Closes at 295 PSI | 1\/8\" NPT thread connection | 240 VAC rated | Sensata PS80-03-0018 manufactured | Replaces: 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM switch is manufactured to exact Carrier cut-in\/cut-out pressure tolerances. Aftermarket substitutes often deviate from factory PSI thresholds, risking nuisance trips or — more dangerously — inadequate compressor protection under high-load conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Refrigerant system must be recovered before replacing this switch on most installations. Tools needed: manifold gauge set, 1\" open-end wrench, thread sealant (approved for refrigerant service), multimeter for continuity verification. Always confirm zero refrigerant pressure before loosening the fitting.\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 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for the Carrier \u003cstrong\u003ePY2PPB048090AA\u003c\/strong\u003e packaged heat pump unit. Verify your existing switch's PSI ratings and NPT thread size against your unit's data plate before ordering. Our fitment team is available to confirm compatibility — just reach out before you buy. \u003cstrong\u003eOrder now and we'll ship today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640509059443,"sku":"CARRIE-PY2PPB048090AA-PRESSURE_SWITCH-HK02ZA395","price":70.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640509092211,"sku":"CARRIE-PY2PPB048090AA-PRESSURE_SWITCH-HK02ZA395-GEN","price":61.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK02ZA395_af6c6983-bb2c-4c1c-9a17-54e1d5660bb5.jpg?v=1775033352","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py2ppb048090aa-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}