{"product_id":"carrier-py1rpa060074aawb-pressure-switch-jri7yl","title":"OEM Carrier High Pressure Switch 448#OPN 327#CLS — PY1RPA060074AAWB","description":"\u003ch1\u003eOEM Carrier High Pressure Switch 448#OPN \/ 327#CLS for Model PY1RPA060074AAWB\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier high pressure switch (HK02ZA442) is the factory-specified refrigerant-side safety switch for the \u003cstrong\u003eCarrier PY1RPA060074AAWB\u003c\/strong\u003e packaged unit. Mounted in the high-side refrigerant circuit, it monitors discharge pressure and opens the control circuit when pressure exceeds safe operating limits — protecting the compressor from catastrophic damage. When this switch fails or trips on a fault, the system will lock out, display a high-pressure fault code, or short-cycle without producing cooling. A second OEM switch, \u003cstrong\u003eHK02ZB044\u003c\/strong\u003e (Low Pressure Switch, 7#OPN \/ 22#CLS, 50\" leads, 24V), is also used on this platform and is available separately.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs (HK02ZA442):\u003c\/strong\u003e High Pressure Switch | Opens at 448 PSI | Closes at 327 PSI | Factory-matched setpoints for R-410A refrigerant systems | Replaces: HK02ZA439\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e Genuine Carrier OEM switches are calibrated to exact factory setpoints. Aftermarket pressure switches frequently carry wider pressure tolerances, risking nuisance trips or — more dangerously — failure to open under a true high-pressure event, leaving your compressor unprotected.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant-side work requires an EPA Section 608 certified technician. Tools needed: manifold gauge set, adjustable wrench, leak detector. Always recover refrigerant per EPA regulations before replacing. Photograph and label wiring before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock units ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the \u003cstrong\u003eCarrier PY1RPA060074AAWB\u003c\/strong\u003e packaged rooftop unit. Verify your existing switch part number against HK02ZA442 (high pressure) or HK02ZB044 (low pressure) before ordering — both are OEM-genuine and available here. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640645800307,"sku":"CARRIE-PY1RPA060074AAWB-PRESSURE_SWITCH-HK02ZA442","price":132.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640645833075,"sku":"CARRIE-PY1RPA060074AAWB-PRESSURE_SWITCH-HK02ZA442-GEN","price":116.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK02ZA442_2e9ee4fe-68e8-4ce2-9b5b-02572acd3055.jpg?v=1775033441","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1rpa060074aawb-pressure-switch-jri7yl","provider":"National HVAC Parts","version":"1.0","type":"link"}