{"product_id":"carrier-py1pna042080acba-pressure-switch-jrhhvr","title":"OEM Carrier Pressure Switch 22#CLS 7#OPN 50\" Leads — PY1PNA042080ACBA","description":"\u003ch1\u003eOEM Carrier Pressure Switch HK02ZB038 for Model PY1PNA042080ACBA\u003c\/h1\u003e\u003cp\u003eThis OEM pressure switch (part number \u003cstrong\u003eHK02ZB038\u003c\/strong\u003e) is the factory-specified inducer\/draft-proving switch for the \u003cstrong\u003eCarrier PY1PNA042080ACBA\u003c\/strong\u003e packaged gas unit. Mounted on the inducer housing, it monitors negative pressure created by the draft inducer motor before allowing the ignition sequence to proceed. When it fails — or when the tubing to it cracks or clogs — the control board sees an open switch circuit and locks out the furnace, producing a no-heat, no-ignition fault code. The symptom is a system that cycles the inducer but never advances to ignition.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 22\" W.C. close pressure | 7\" W.C. open pressure | 50\" wire leads | Single-port, normally open | Factory-matched switching threshold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HK02ZB038 is calibrated to Carrier's exact W.C. switching thresholds. Aftermarket switches with loose tolerances can cause nuisance lockouts or, worse, allow ignition under unsafe draft conditions — always use OEM on gas appliances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Power down the unit and confirm inducer is off before beginning. Tools needed: 1\/4\" nut driver, needle-nose pliers, and a short length of replacement tubing if the hose shows cracks. Inspect the rubber pressure hose and port for blockage before condemning the switch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against manufacturing defects. Ships same business day from our warehouse when ordered before 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for Carrier model \u003cstrong\u003ePY1PNA042080ACBA\u003c\/strong\u003e packaged gas\/electric unit. Always verify the W.C. rating and lead length on your existing switch before ordering. Our technical team is available to confirm fitment before you purchase — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640968532339,"sku":"CARRIE-PY1PNA042080ACBA-PRESSURE_SWITCH-HK02ZB038","price":57.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640968565107,"sku":"CARRIE-PY1PNA042080ACBA-PRESSURE_SWITCH-HK02ZB038-GEN","price":50.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK02ZB038_378d124a-646e-4ca4-b4a0-de362c9a93c6.jpg?v=1775037017","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1pna042080acba-pressure-switch-jrhhvr","provider":"National HVAC Parts","version":"1.0","type":"link"}