{"product_id":"payne-pa13nr03000gacaa-pressure-switch-jria74","title":"OEM Payne Pressure Switch Set for PA13NR03000GACAA — HK02ZA395 \u0026 HK02Z","description":"\u003ch1\u003eOEM Payne High \u0026amp; Low Pressure Switch Set for Model PA13NR03000GACAA\u003c\/h1\u003e\u003cp\u003eThis listing covers both OEM pressure switches factory-specified for the \u003cstrong\u003ePayne PA13NR03000GACAA\u003c\/strong\u003e heat pump system: the \u003cstrong\u003eHK02ZA395 High Pressure Switch\u003c\/strong\u003e and the \u003cstrong\u003eHK02ZB028 Low Pressure Switch\u003c\/strong\u003e. Pressure switches are refrigerant-circuit safety devices that monitor system pressure and cut power to the compressor if pressures fall outside safe operating thresholds. A failed pressure switch typically causes the system to lock out before the compressor engages — symptoms include a system that powers on but never cools or heats, frequent short-cycling, or a fault code indicating a pressure trip on the control board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e HK02ZA395 — High Pressure Switch, opens on excess high-side pressure | HK02ZB028 — Low Pressure Switch, opens on low-side pressure drop | Factory-calibrated trip points | Spade terminal connections | OEM-matched pressure ratings for R-410A refrigerant circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM pressure switches from Payne (a Carrier-family brand) are calibrated to exact factory cut-out and cut-in pressures. Off-brand substitutes frequently carry wider pressure tolerances, risking compressor damage from undetected over- or under-pressure conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant circuit work requires an EPA 608 certification. Tools needed: manifold gauge set, multimeter, flathead screwdriver, safety glasses. Always recover refrigerant before replacing pressure switches. Verify switch continuity with a multimeter before condemning the part.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty on both switches. Orders received before cutoff ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Both HK02ZA395 and HK02ZB028 are factory-specified for the \u003cstrong\u003ePayne PA13NR03000GACAA\u003c\/strong\u003e heat pump condenser. Cross-reference your unit's data plate and existing switch label to confirm high-side vs. low-side placement before installation. These switches are part of the Carrier-family component ecosystem and may appear across related Carrier, Bryant, and Payne platforms — verify OEM part numbers for your exact model. In stock and ready to ship — order today and get your system back online fast.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62909122838899,"sku":"PAYNE-PA13NR03000GACAA-PRESSURE_SWITCH-HK02ZA395","price":43.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909122871667,"sku":"PAYNE-PA13NR03000GACAA-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_3f6d45c7-03eb-4fcf-b753-0ebb597908d1.jpg?v=1780718638","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa13nr03000gacaa-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}