{"product_id":"payne-pa13nr03600gaeaa-pressure-switch-jria74","title":"OEM Payne High\/Low Pressure Switch HK02ZA395 HK02ZB028 — PA13NR03600GA","description":"\u003ch1\u003eOEM Payne High \u0026amp; Low Pressure Switch for Model PA13NR03600GAEAA\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 PA13NR03600GAEAA\u003c\/strong\u003e single-stage R-410A split-system condenser. Pressure switches monitor refrigerant pressure on both the high and low sides of the refrigerant circuit, sending a signal to the control board to shut down operation if unsafe pressure levels are detected. When either switch fails or trips incorrectly, the system will fault out, lockout before completing a cooling cycle, or refuse to start altogether — often displaying a pressure fault code at the thermostat or 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 | Factory-calibrated cut-out and cut-in set points | Designed for R-410A refrigerant systems | Spade terminal connectors for direct OEM harness plug-in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM pressure switches are calibrated to exact factory pressure thresholds for the PA13NR03600GAEAA. Generic alternatives frequently use broader tolerance set points, increasing the risk of nuisance trips or — more dangerously — allowing the system to run outside safe pressure limits, potentially damaging the compressor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Refrigerant must be recovered by an EPA 608-certified technician before replacing pressure switches on live refrigerant lines. Tools needed: manifold gauge set, refrigerant recovery equipment, adjustable wrench, multimeter. Always verify the switch is the fault source (check for continuity) before replacing. De-energize the unit at the disconnect before beginning any work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before cutoff ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e These pressure switches are engineered specifically for the \u003cstrong\u003ePayne PA13NR03600GAEAA\u003c\/strong\u003e 3-ton R-410A split-system condenser. Always cross-reference the OEM part numbers HK02ZA395 and HK02ZB028 against your unit's data plate and wiring diagram before ordering to confirm the correct high or low side switch for your repair. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today and get your system back up and running fast.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62909102260595,"sku":"PAYNE-PA13NR03600GAEAA-PRESSURE_SWITCH-HK02ZA395","price":43.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909102293363,"sku":"PAYNE-PA13NR03600GAEAA-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_b0ed304e-e61c-4df2-80d6-e50eef800f91.jpg?v=1780718368","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa13nr03600gaeaa-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}