{"product_id":"payne-pa13nr024000abaa-pressure-switch-jria74","title":"OEM Payne Pressure Switch HK02ZA395 \/ HK02ZB028 — PA13NR024000ABAA","description":"\u003ch1\u003eOEM Payne High \u0026amp; Low Pressure Switch HK02ZA395 \/ HK02ZB028 for Model PA13NR024000ABAA\u003c\/h1\u003e\u003cp\u003eThis OEM pressure switch listing covers both the \u003cstrong\u003ehigh pressure switch (HK02ZA395)\u003c\/strong\u003e and the \u003cstrong\u003elow pressure switch (HK02ZB028)\u003c\/strong\u003e — the factory-specified replacements for the \u003cstrong\u003ePayne PA13NR024000ABAA\u003c\/strong\u003e 2-ton split-system air conditioner. Pressure switches are safety devices that monitor refrigerant pressures on both the high and low sides of the refrigerant circuit. When either switch detects an out-of-range pressure condition, it opens the control circuit to protect the compressor from catastrophic damage. A failed pressure switch typically causes the system to lock out immediately at startup or shortly after the compressor engages, often triggering a fault code on the control board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e HK02ZA395 — High Side Pressure Switch | HK02ZB028 — Low Side Pressure Switch | 24V control circuit compatible | Factory-calibrated pressure setpoints matched to R-22 refrigerant systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM Payne pressure switches carry factory-calibrated trip points — exact opening and closing pressures engineered for this unit. Generic alternatives often use wider tolerance setpoints that can allow compressor operation outside safe pressure ranges, risking expensive compressor failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Refrigerant must be recovered by a certified HVAC technician before replacing pressure switches. Tools needed: manifold gauge set, refrigerant recovery equipment, wire stripper, multimeter. Always verify the switch is electrically open before condemning — also test the refrigerant charge and check for blockages that may be causing the pressure fault.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty on both HK02ZA395 and HK02ZB028. Orders ship same business day from our warehouse when placed before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e These OEM pressure switches are factory-matched to the \u003cstrong\u003ePayne PA13NR024000ABAA\u003c\/strong\u003e 2-ton single-stage split-system condenser. The PA13NR series uses R-22 refrigerant — confirm your unit's data plate refrigerant type and verify part numbers HK02ZA395 (high) and HK02ZB028 (low) before ordering. Not sure which switch you need? Our HVAC parts team is available to confirm fitment before you buy.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62909137256819,"sku":"PAYNE-PA13NR024000ABAA-PRESSURE_SWITCH-HK02ZA395","price":43.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909137289587,"sku":"PAYNE-PA13NR024000ABAA-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_5b2821db-5e9b-4cf7-889f-e95d02712cf0.jpg?v=1780718550","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa13nr024000abaa-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}