{"product_id":"carrier-ph2ppb042000aa-pressure-switch-jria74","title":"OEM Carrier High Pressure Switch 395\/295 PSI for PH2PPB042000AA","description":"\u003ch1\u003eOEM Carrier High Pressure Switch HK02ZA395 for Model PH2PPB042000AA\u003c\/h1\u003e\u003cp\u003eThis OEM high pressure switch is the factory-specified replacement for the \u003cstrong\u003eCarrier PH2PPB042000AA\u003c\/strong\u003e heat pump system. The high pressure switch is a critical refrigerant-side safety device that monitors system pressure and cuts power to the compressor when unsafe high-side pressure is detected. When this switch fails or trips, you'll typically experience a system lockout, compressor not running, or a fault code indicating a high pressure trip — even when refrigerant charge and airflow are normal. A faulty switch can cause nuisance lockouts or, conversely, allow the compressor to run unprotected under dangerously high pressures.\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 connection | 240 VAC rated | Factory OEM part number HK02ZA395 (also cross-references HK02ZA395A)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM Carrier pressure switches are calibrated to exact factory setpoints. Generic aftermarket switches often carry wider PSI tolerances, risking either nuisance trips or insufficient compressor protection — neither acceptable in a heat pump application.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Recover refrigerant before opening the system per EPA Section 608 regulations. Tools needed: manifold gauge set, refrigerant recovery machine, adjustable wrench, multimeter. Always confirm switch continuity before assuming refrigerant issues.\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 Engineered as a direct OEM replacement for \u003cstrong\u003eCarrier PH2PPB042000AA\u003c\/strong\u003e heat pump condensers. Also cross-references legacy Carrier part numbers including 312926-217, 71267D1, HK02ZA380, HK02ZA396, and HK02ZA400. Verify PSI setpoints against your unit's data plate and service manual before ordering. Our technical team is available to confirm fitment.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641449304435,"sku":"CARRIE-PH2PPB042000AA-PRESSURE_SWITCH-HK02ZA395","price":90.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641449337203,"sku":"CARRIE-PH2PPB042000AA-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_34662a3e-fab9-4b18-8b2f-8353b0189f0f.jpg?v=1775033218","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph2ppb042000aa-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}