{"product_id":"payne-pa13er06000gahaa-pressure-switch-jria74","title":"OEM Payne Pressure Switch HK02ZA395 \/ HK02ZB028 for PA13ER06000GAHAA","description":"\u003ch1\u003eOEM Payne High \u0026amp; Low Pressure Switch HK02ZA395 \/ HK02ZB028 for Model PA13ER06000GAHAA\u003c\/h1\u003e\u003cp\u003eThese are the factory OEM replacement pressure switches for the \u003cstrong\u003ePayne PA13ER06000GAHAA\u003c\/strong\u003e packaged or split-system unit. The high pressure switch (HK02ZA395) and low pressure switch (HK02ZB028) monitor refrigerant pressure on both the high and low sides of the system, protecting the compressor from damaging over-pressure and under-pressure conditions. When either switch fails or trips, the unit will lock out, refuse to start, or shut down mid-cycle — often throwing a fault code on the control board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e OEM-matched pressure setpoints for R-410A systems | High-side switch: HK02ZA395 | Low-side switch: HK02ZB028 | 1\/4\" SAE Schrader-style port connections | SPST normally-closed contacts rated for 24V control circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM switches use factory-calibrated cut-out and cut-in thresholds. Aftermarket alternatives often carry wide pressure tolerances that can allow compressor operation outside safe limits, risking costly compressor failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant recovery is required before replacing pressure switches on a live system. Tools needed: manifold gauge set, recovery machine, torque wrench, multimeter. Always verify the switch is the failed component by checking continuity before recovering refrigerant. Work must be performed by an EPA 608-certified technician.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders ship same business day when placed before 3 PM local time from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the \u003cstrong\u003ePayne PA13ER06000GAHAA\u003c\/strong\u003e 5-ton R-410A unit. Verify your existing switch OEM part numbers (HK02ZA395 for high-side, HK02ZB028 for low-side) against your unit's data plate and wiring diagram before ordering. Need help confirming fitment? Our HVAC parts specialists verify compatibility before every order — contact us today and get your unit back online fast.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62909174841715,"sku":"PAYNE-PA13ER06000GAHAA-PRESSURE_SWITCH-HK02ZA395","price":43.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909174874483,"sku":"PAYNE-PA13ER06000GAHAA-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_ad92a634-477e-465d-9ef6-be5ea3507e4a.jpg?v=1780718515","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa13er06000gahaa-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}