{"product_id":"payne-pa13nr030000abaa-pressure-switch-jria74","title":"OEM Payne Pressure Switch High\/Low for PA13NR030000ABAA","description":"\u003ch1\u003eOEM Payne High \u0026amp; Low Pressure Switch for Model PA13NR030000ABAA\u003c\/h1\u003e\u003cp\u003eThis OEM-matched pressure switch set — \u003cstrong\u003eHK02ZA395 (High Pressure Switch)\u003c\/strong\u003e and \u003cstrong\u003eHK02ZB028 (Low Pressure Switch)\u003c\/strong\u003e — is the factory-specified replacement for the \u003cstrong\u003ePayne PA13NR030000ABAA\u003c\/strong\u003e split-system heat pump. Pressure switches are safety devices that monitor refrigerant pressure on both the high and low sides of the refrigerant circuit. When either switch detects an out-of-range pressure condition, it signals the control board to lock out operation, preventing compressor damage. Common failure symptoms include the system refusing to start heating or cooling, the unit short-cycling, or a fault code on the control board indicating a pressure trip. A faulty pressure switch can mimic refrigerant charge problems, so always verify switch operation before adding refrigerant.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e HK02ZA395 — High-Side Pressure Switch | HK02ZB028 — Low-Side Pressure Switch | Factory-calibrated trip points | 1\/4\" SAE Schrader-compatible port connections | Rated for R-410A refrigerant systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM Payne\/Carrier-family pressure switches are calibrated to exact factory cut-in and cut-out pressures for the PA13NR030000ABAA. Generic switches often carry wider trip-point tolerances, risking nuisance lockouts or, worse, delayed shutdown during a genuine fault.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant system components require EPA 608 certification to service legally. Tools needed: manifold gauge set, 1\/4\" and 5\/16\" flare wrenches, multimeter to verify continuity before install. Always recover refrigerant if breaking the refrigerant circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty on both switches. Orders ship same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the \u003cstrong\u003ePayne PA13NR030000ABAA\u003c\/strong\u003e 2.5-ton R-410A split-system heat pump. Both OEM part numbers HK02ZA395 and HK02ZB028 are cross-compatible within the Carrier\/Bryant\/Payne manufacturing family — confirm your unit's data plate and existing switch markings before ordering. Need help verifying fitment? Our HVAC parts specialists confirm compatibility before you buy. \u003cstrong\u003eIn stock — order by 3 PM EST for same-day shipping.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62909134209395,"sku":"PAYNE-PA13NR030000ABAA-PRESSURE_SWITCH-HK02ZA395","price":43.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909134242163,"sku":"PAYNE-PA13NR030000ABAA-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_bec8911a-acb2-43a3-b825-c7ec3381e9f6.jpg?v=1780718485","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa13nr030000abaa-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}