{"product_id":"payne-pa10ja024000acaa-pressure-switch-jria74","title":"OEM Payne Pressure Switch High \u0026 Low for PA10JA024000ACAA","description":"\u003ch1\u003eOEM Payne High \u0026amp; Low Pressure Switch for Model PA10JA024000ACAA\u003c\/h1\u003e\u003cp\u003eThese OEM pressure switches — \u003cstrong\u003eHK02ZA395 (High Pressure Switch)\u003c\/strong\u003e and \u003cstrong\u003eHK02ZB028 (Low Pressure Switch)\u003c\/strong\u003e — are the factory-specified replacements for the \u003cstrong\u003ePayne PA10JA024000ACAA\u003c\/strong\u003e packaged air conditioner. Pressure switches monitor refrigerant pressures on both the high and low sides of the refrigerant circuit, signaling the control board to shut down the system if pressures fall outside safe operating ranges. A failed pressure switch commonly causes nuisance lockouts, no-cooling conditions, or repeated short-cycling even when refrigerant charge and airflow are correct.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e High-side switch OEM # \u003cstrong\u003eHK02ZA395\u003c\/strong\u003e | Low-side switch OEM # \u003cstrong\u003eHK02ZB028\u003c\/strong\u003e | Factory-calibrated cut-out\/cut-in set points | Spade terminal connections | Designed for R-410A refrigerant systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM pressure switches are factory-calibrated to exact cut-out and cut-in pressure thresholds for the PA10JA024000ACAA. Generic substitutes often carry wider tolerances that can allow the system to operate outside safe pressure limits, risking compressor damage and voiding equipment warranties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant system work must be performed by an EPA 608-certified technician. Tools needed: manifold gauge set, refrigerant recovery equipment, 1\/4\" nut driver, multimeter, and spade terminal puller. Always recover refrigerant before disconnecting pressure switch fittings, and verify correct switch (high vs. low side) before installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty on both HK02ZA395 and HK02ZB028. Ships same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e These switches are engineered specifically for the \u003cstrong\u003ePayne PA10JA024000ACAA\u003c\/strong\u003e packaged air conditioning unit. Always verify your existing switch's pressure ratings and terminal configuration against your unit's data plate before ordering — high-side and low-side switches are not interchangeable. Our technical team is available to confirm fitment prior to purchase. Order today and receive same-day shipping on in-stock OEM parts.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62909247881587,"sku":"PAYNE-PA10JA024000ACAA-PRESSURE_SWITCH-HK02ZA395","price":43.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909247914355,"sku":"PAYNE-PA10JA024000ACAA-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_7676b1f9-1723-40a4-90c6-70966017ce53.jpg?v=1780718403","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa10ja024000acaa-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}