{"product_id":"carrier-py2pnb048090aa-pressure-switch-jria74","title":"OEM Carrier High Pressure Switch 395\/295 PSI for PY2PNB048090AA","description":"\u003ch1\u003eOEM Carrier High Pressure Switch HK02ZA395 — 395\/295 PSI for Model PY2PNB048090AA\u003c\/h1\u003e\u003cp\u003eThis genuine OEM Carrier high pressure switch (part number \u003cstrong\u003eHK02ZA395\u003c\/strong\u003e) is the factory-specified refrigerant safety switch for the \u003cstrong\u003eCarrier PY2PNB048090AA\u003c\/strong\u003e packaged unit. The high pressure switch continuously monitors refrigerant discharge pressure and opens the safety circuit if pressure exceeds the rated cutout threshold — protecting the compressor from catastrophic over-pressure damage. When this switch fails or trips, the system may shut down on lockout, display a high-pressure fault code, or fail to maintain cooling, even when refrigerant charge and airflow appear normal.\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 | 240 VAC rated | SPST normally closed | 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 OEM switch manufactured to exact factory pressure setpoints (±2%). Aftermarket alternatives frequently carry wider pressure tolerances, risking either nuisance trips or, worse, failure to protect the compressor at true over-pressure conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Recover all refrigerant before replacing this switch. Tools required: refrigerant recovery machine, manifold gauges, adjustable wrench, and leak-detection solution. Always verify system pressure after reinstallation before recharging. Recommended for licensed HVAC technicians only due to refrigerant handling requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty \u0026amp; Shipping:\u003c\/strong\u003e Backed by a 1-year OEM factory warranty. In stock and ships same business day from our warehouse. Replaces legacy part numbers: 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM replacement for the \u003cstrong\u003eCarrier PY2PNB048090AA\u003c\/strong\u003e packaged unit (4-ton, 90,000 BTU gas\/electric). Verify the 395\/295 PSI pressure rating on your unit's existing switch label before ordering. Have a fitment question? Our HVAC parts specialists are standing by — we verify compatibility before you order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640536355187,"sku":"CARRIE-PY2PNB048090AA-PRESSURE_SWITCH-HK02ZA395","price":71.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640536387955,"sku":"CARRIE-PY2PNB048090AA-PRESSURE_SWITCH-HK02ZA395-GEN","price":62.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK02ZA395_ae9075d7-e66f-45f7-8a52-3e902c6bcbc9.jpg?v=1775033318","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py2pnb048090aa-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}