{"product_id":"carrier-py2pnb042090aa-pressure-switch-jria74","title":"OEM Carrier High Pressure Switch 395\/295 PSI for PY2PNB042090AA","description":"\u003ch1\u003eOEM Carrier High Pressure Switch HK02ZA395 — 395\/295 PSI for Model PY2PNB042090AA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM factory-specified high pressure switch for the \u003cstrong\u003eCarrier PY2PNB042090AA\u003c\/strong\u003e packaged heat pump unit. The high pressure switch is a critical refrigerant-circuit safety device that monitors system pressure on the high side of the refrigerant loop. When refrigerant pressure climbs beyond safe operating limits — due to a dirty coil, blocked airflow, refrigerant overcharge, or a failing condenser fan — this switch opens at \u003cstrong\u003e395 PSI\u003c\/strong\u003e and interrupts the compressor circuit to prevent catastrophic compressor failure. It automatically resets when pressure drops back to \u003cstrong\u003e295 PSI\u003c\/strong\u003e. Typical failure symptoms include nuisance high-pressure fault codes, compressor short-cycling, or the system locking out on a high-pressure trip that cannot be cleared.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Opens at 395 PSI | Closes at 295 PSI | 6(6)A @ 240 VAC | 1\/8\" NPT male thread | Quick-connect electrical terminals | Sensata PS80-03-0018 platform | PMAX 41 Bar\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 Carrier pressure tolerances. Generic switches may have looser setpoint tolerances, risking either nuisance trips or — more dangerously — failure to open at the correct pressure, exposing your compressor to damaging over-pressure conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Recover all refrigerant per EPA 608 regulations before removing the switch. Tools needed: refrigerant recovery machine, manifold gauges, adjustable wrench, thread tape, multimeter. Always verify the new switch continuity before recharging. This repair is best performed by a licensed HVAC technician.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for \u003cstrong\u003eCarrier PY2PNB042090AA\u003c\/strong\u003e packaged heat pump units. Also replaces legacy part numbers 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, HK02ZA435, HK02ZA500, and HK02ZA501. Confirm the PSI setpoints on your existing switch's data label before ordering. Need fitment help? Our team verifies compatibility before you buy — contact us today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640538878323,"sku":"CARRIE-PY2PNB042090AA-PRESSURE_SWITCH-HK02ZA395","price":92.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640538911091,"sku":"CARRIE-PY2PNB042090AA-PRESSURE_SWITCH-HK02ZA395-GEN","price":81.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK02ZA395_20df6370-de66-4a03-9e71-8ea884b01857.jpg?v=1775033314","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py2pnb042090aa-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}