{"product_id":"carrier-py2pnb036090aa-pressure-switch-jria74","title":"OEM Carrier High Pressure Switch 395\/295 PSI for PY2PNB036090AA","description":"\u003ch1\u003eOEM Carrier High Pressure Switch 395\/295 PSI — HK02ZA395 for Model PY2PNB036090AA\u003c\/h1\u003e\u003cp\u003eThis genuine OEM Carrier high pressure switch (part number \u003cstrong\u003eHK02ZA395\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PY2PNB036090AA\u003c\/strong\u003e packaged unit. The high pressure switch is a critical refrigerant-circuit safety device: it continuously monitors compressor discharge pressure and opens the control circuit if refrigerant pressure climbs to a dangerous level. When this switch fails or trips, the system will shut down on high-pressure lockout — often misdiagnosed as a control board or thermostat fault. A properly functioning switch protects your compressor from catastrophic over-pressure damage.\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 | 240 VAC rated | Sensata PS80-03-0018 platform | Replaces legacy part numbers including 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, and HK02ZA401\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM part built to exact factory pressure setpoints (±1% tolerance). Aftermarket alternatives can carry wider pressure tolerances, leading to false trips or — more dangerously — failure to open under true over-pressure conditions, risking compressor failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Recover refrigerant charge before replacing this switch (EPA 608 certification required). Tools needed: refrigerant recovery machine, manifold gauge set, 1\" open-end wrench, thread seal tape. Always verify the switch is the root cause by checking system pressures and confirming the switch is open with a multimeter before replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM replacement for Carrier model \u003cstrong\u003ePY2PNB036090AA\u003c\/strong\u003e. Verify your unit's existing pressure switch PSI setpoints against your data plate before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — order with confidence.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640541598067,"sku":"CARRIE-PY2PNB036090AA-PRESSURE_SWITCH-HK02ZA395","price":90.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640541630835,"sku":"CARRIE-PY2PNB036090AA-PRESSURE_SWITCH-HK02ZA395-GEN","price":79.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK02ZA395_3f93d923-0cd2-40d2-9d84-3cd133f619ec.jpg?v=1775033306","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py2pnb036090aa-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}