{"product_id":"carrier-py2pnb042090nb-pressure-switch-jria74","title":"OEM Carrier High Pressure Switch HK02ZA395 for PY2PNB042090NB","description":"\u003ch1\u003eOEM Carrier High Pressure Switch HK02ZA395 for Model PY2PNB042090NB\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM high pressure switch (part number \u003cstrong\u003eHK02ZA395\u003c\/strong\u003e) factory-specified for the \u003cstrong\u003eCarrier PY2PNB042090NB\u003c\/strong\u003e packaged unit. The high pressure switch is a critical refrigerant-circuit safety device that monitors the high side of the refrigerant loop. When refrigerant pressure exceeds a safe threshold — caused by a dirty condenser coil, failed condenser fan, refrigerant overcharge, or blocked airflow — the switch opens and shuts down the compressor to prevent catastrophic damage. Common symptoms of a failed high pressure switch include nuisance lockouts, the system not cooling, or a fault code indicating a high-pressure trip with no actual over-pressure condition present.\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 male thread connection | Rated 6(6)A at 240 VAC | Sensata PS80-03-0018 platform | PMAX 41B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM Carrier switch uses factory-calibrated cut-out and cut-in setpoints (395\/295 PSI). Aftermarket alternatives may carry ±5–10% PSI tolerance variance, risking nuisance trips or, worse, failing to protect your compressor at the correct threshold.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always recover refrigerant before removing any refrigerant-circuit component. Tools needed: refrigerant recovery unit, manifold gauge set, adjustable wrench, and thread sealant (non-hardening). Confirm system is de-energized and pressure is relieved before disconnecting the switch.\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.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for \u003cstrong\u003eCarrier PY2PNB042090NB\u003c\/strong\u003e packaged units. Also replaces legacy part numbers: 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, HK02ZA435, HK02ZA500, HK02ZA501, and 19240027. Always verify your unit's data plate and existing switch PSI ratings before ordering. Our fitment team is available to confirm compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640537239923,"sku":"CARRIE-PY2PNB042090NB-PRESSURE_SWITCH-HK02ZA395","price":93.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640537272691,"sku":"CARRIE-PY2PNB042090NB-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_41a88f16-480a-499c-8049-371546b041cb.jpg?v=1775033626","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py2pnb042090nb-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}