{"product_id":"payne-pa2peb042000aa-pressure-switch-jria74","title":"OEM Payne High Pressure Switch HK02ZA395 for PA2PEB042000AA","description":"\u003ch1\u003eOEM Payne High Pressure Switch HK02ZA395 for Model PA2PEB042000AA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM high pressure switch (part number \u003cstrong\u003eHK02ZA395\u003c\/strong\u003e) designed specifically for the \u003cstrong\u003ePayne PA2PEB042000AA\u003c\/strong\u003e packaged air conditioning and heating unit. The pressure switch is a critical safety component that monitors the inducer motor's draft operation by sensing negative air pressure in the flue system. If the switch fails to close — or fails to open when it should — the control board will lock out the ignition sequence entirely, leaving you with no heat. Common symptoms of a failed pressure switch include a furnace or packaged unit that starts the inducer motor but never advances to ignition, as well as fault codes indicating a pressure switch fault or stuck-open condition.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e High pressure switch | OEM part number HK02ZA395 | Factory-calibrated W.C. (water column) rating | Single-port hose connection | Direct OEM replacement — no modifications required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Payne\/Carrier-family pressure switch calibrated to the exact W.C. trip point required by the PA2PEB042000AA. Aftermarket switches frequently ship with incorrect setpoints, causing nuisance lockouts or, worse, unsafe operation by failing to detect a blocked flue condition.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Disconnect power before servicing. Tools needed: flathead screwdriver, 1\/4\" nut driver, and a manometer (recommended to verify W.C. rating). Inspect the rubber hose and port for cracks or blockages before installing the new switch, as a clogged hose is a common root cause of switch failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders ship same business day from our stocked warehouse — get your system back online fast.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM replacement for the Payne \u003cstrong\u003ePA2PEB042000AA\u003c\/strong\u003e packaged unit. Always verify the part number on your existing switch's label before ordering, as pressure switch W.C. ratings vary even within the same model family. Our fitment team is available to confirm compatibility before you order — don't guess on a safety component.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62908927770995,"sku":"PAYNE-PA2PEB042000AA-PRESSURE_SWITCH-HK02ZA395","price":43.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62908927803763,"sku":"PAYNE-PA2PEB042000AA-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_a5dca0a7-4195-40bf-93af-ee0d7871c590.jpg?v=1780718359","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa2peb042000aa-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}