{"product_id":"payne-pa10ja060000acaa-pressure-switch-jria74","title":"OEM Payne Pressure Switch Set HK02ZA395 \/ HK02ZB028 — PA10JA060000ACAA","description":"\u003ch1\u003eOEM Payne High \u0026amp; Low Pressure Switch Set for Model PA10JA060000ACAA\u003c\/h1\u003e\u003cp\u003eThis factory-matched OEM pressure switch kit includes both the \u003cstrong\u003ehigh pressure switch (HK02ZA395)\u003c\/strong\u003e and \u003cstrong\u003elow pressure switch (HK02ZB028)\u003c\/strong\u003e for the \u003cstrong\u003ePayne PA10JA060000ACAA\u003c\/strong\u003e packaged or split-system unit. Pressure switches are safety devices that monitor the inducer motor's ability to create proper draft. When the inducer spins up, the resulting negative pressure closes the switch, signaling the control board that it is safe to proceed with ignition. A failed pressure switch interrupts this signal, causing the system to lock out before the ignition sequence ever begins — leaving you with a no-heat call and a blinking fault code.\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 | Rated for correct water-column (W.C.) differential as factory-specified for the PA10JA060000ACAA | Single-port design with 1\/4\" barb fitting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM pressure switches are calibrated to the exact W.C. opening and closing thresholds specified by Payne engineering. Aftermarket substitutes frequently carry wider tolerances, risking nuisance lockouts or — more dangerously — a switch that fails to open when true inducer failure occurs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Disconnect power before beginning. Tools needed: 1\/4\" nut driver, flathead screwdriver, needle-nose pliers, manometer (recommended to verify W.C. after install). Inspect the rubber hose connecting the switch to the inducer housing for cracks or blockages before installing a new switch — a clogged hose is a common root cause of pressure switch failures.\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 climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e This set is engineered specifically for the \u003cstrong\u003ePayne PA10JA060000ACAA\u003c\/strong\u003e (5-ton, 60,000 BTU class). Because pressure switch W.C. ratings vary even within a model family, always cross-reference OEM part numbers HK02ZA395 and HK02ZB028 against your unit's wiring diagram or data plate before ordering. Need help confirming fitment? Our HVAC parts specialists verify compatibility before every order — reach out before you buy and ship today.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62909221699955,"sku":"PAYNE-PA10JA060000ACAA-PRESSURE_SWITCH-HK02ZA395","price":43.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909221732723,"sku":"PAYNE-PA10JA060000ACAA-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_a55078af-5781-4ec1-8af1-ad8dc0a34f27.jpg?v=1780718650","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa10ja060000acaa-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}