{"product_id":"carrier-py2pnb024040ab-pressure-switch-jria74","title":"OEM Carrier High Pressure Switch 395\/295 PSI for PY2PNB024040AB","description":"\u003ch1\u003eOEM Carrier High Pressure Switch HK02ZA395 — 395\/295 PSI for Model PY2PNB024040AB\u003c\/h1\u003e\u003cp\u003eThis is the factory-specified OEM high pressure switch (part number \u003cstrong\u003eHK02ZA395\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier PY2PNB024040AB\u003c\/strong\u003e packaged heat pump unit. The high pressure switch is a critical refrigerant-circuit safety device: it monitors system discharge pressure and interrupts the compressor circuit if pressure exceeds the safe threshold. When it fails or trips, the system locks out on a high-pressure fault, the compressor shuts down unexpectedly, or the unit won't cool or heat at all — even when pressures appear normal.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Opens at \u003cstrong\u003e395 PSI\u003c\/strong\u003e | Closes at \u003cstrong\u003e295 PSI\u003c\/strong\u003e | 240 VAC, 6(6)A rated | 1\/8\" NPT fine-thread refrigerant port | SPST normally-closed | Sensata PS80-03-0018 \/ HK02ZA395A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier Factory Authorized Part manufactured by Sensata to exact cut-out and cut-in tolerances. Aftermarket pressure switches frequently carry ±10–15 PSI deviation, which risks either nuisance tripping or — more dangerously — failing to protect the compressor from true over-pressure events.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant recovery is required before replacing this switch. Tools needed: manifold gauge set, recovery machine, refrigerant certified technician (EPA 608), 1\" open-end wrench, and a multimeter to verify continuity post-install. Always verify system pressures are normal before condemning the switch alone.\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 in original Carrier packaging.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for Carrier model \u003cstrong\u003ePY2PNB024040AB\u003c\/strong\u003e packaged heat pump units. This switch also supersedes legacy part numbers 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, HK02ZA435, HK02ZA500, and HK02ZA501 — verify your unit's existing switch PSI rating on the data plate before ordering. Have a compatibility question? Our HVAC parts specialists verify fitment before you buy. \u003cstrong\u003eOrder now — in stock and ships today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640556409203,"sku":"CARRIE-PY2PNB024040AB-PRESSURE_SWITCH-HK02ZA395","price":93.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640556441971,"sku":"CARRIE-PY2PNB024040AB-PRESSURE_SWITCH-HK02ZA395-GEN","price":82.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK02ZA395_6c6b046e-5f09-4279-a6e7-468fa116a599.jpg?v=1775033284","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py2pnb024040ab-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}