{"product_id":"payne-pa13nr048000aeaa-pressure-switch-jria74","title":"OEM Payne Pressure Switch Kit for PA13NR048000AEAA — HK02ZA395 \/ HK02Z","description":"\u003ch1\u003eOEM Payne High \u0026amp; Low Pressure Switch Kit for Model PA13NR048000AEAA\u003c\/h1\u003e\u003cp\u003eThis listing includes the factory-specified OEM replacement pressure switches for the \u003cstrong\u003ePayne PA13NR048000AEAA\u003c\/strong\u003e split-system heat pump — both the \u003cstrong\u003eHigh Pressure Switch (HK02ZA395)\u003c\/strong\u003e and the \u003cstrong\u003eLow Pressure Switch (HK02ZB028)\u003c\/strong\u003e. Pressure switches are critical safety devices that monitor refrigerant pressure on both the high and low sides of the refrigerant circuit. When either switch detects a pressure reading outside safe operating range, it opens the circuit and shuts the system down to prevent compressor damage. Common failure symptoms include the system locking out immediately at startup, short-cycling, or displaying a pressure fault code on the thermostat or control board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e High Pressure Switch — OEM Part HK02ZA395 | Low Pressure Switch — OEM Part HK02ZB028 | Factory-calibrated trip points | Direct plug-in wiring connectors | Designed for R-410A refrigerant systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM pressure switches are calibrated to exact factory trip-point specifications for the \u003cstrong\u003ePA13NR048000AEAA\u003c\/strong\u003e. Generic alternatives often carry wider pressure tolerances, risking nuisance trips or — more dangerously — failure to trip when compressor protection is needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Refrigerant pressure must be verified before diagnosis. Tools needed: manifold gauge set, multimeter, flat-head and Phillips screwdrivers. It is recommended that a certified HVAC technician handle this repair. Always disconnect power before servicing and photograph all wiring prior to removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty on both switches. Orders placed before cutoff ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Payne \u003cstrong\u003ePA13NR048000AEAA\u003c\/strong\u003e 4-ton single-stage R-410A split-system heat pump. Confirm existing switch part numbers (HK02ZA395 and HK02ZB028) against your unit's data plate and wiring diagram before ordering. Need fitment verification? Our HVAC parts specialists confirm compatibility before your order ships — no guesswork, no returns.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62909087809907,"sku":"PAYNE-PA13NR048000AEAA-PRESSURE_SWITCH-HK02ZA395","price":43.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909087842675,"sku":"PAYNE-PA13NR048000AEAA-PRESSURE_SWITCH-HK02ZA395-GEN","price":38.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK02ZA395_e151293a-b054-42dd-8eb0-3753844baf38.jpg?v=1780718622","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa13nr048000aeaa-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}