{"product_id":"carrier-py3gna042060na-pressure-switch-h43sg3","title":"OEM Carrier Draft Pressure Switch 0.18\" WC for PY3GNA042060NA","description":"\u003ch1\u003eOEM Carrier Draft Pressure Switch 0.18\" WC for Model PY3GNA042060NA\u003c\/h1\u003e\u003cp\u003eThis is the factory-specified OEM draft pressure switch (part number \u003cstrong\u003eHK06WC061\u003c\/strong\u003e, superseded by \u003cstrong\u003eHK06MB061\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier PY3GNA042060NA\u003c\/strong\u003e packaged gas\/electric unit. The pressure switch monitors negative pressure produced by the draft inducer motor before each ignition cycle. If the inducer fails to generate sufficient airflow — or the switch itself fails — the furnace control board will lock out on a pressure fault, preventing any attempt at ignition and leaving you with no heat. Symptoms include a short-cycling inducer, a flashing diagnostic fault code, or a furnace that runs the inducer but never advances to ignition.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 0.18\" Water Column (WC) set point | Normally open, closes on negative pressure | Honeywell\/Resideo manufactured | Cross-references: IS20224-5236, 1938D2\/B | Superseded OEM part: HK06MB061\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM switch is factory-calibrated to the exact 0.18\" WC trip point required by the Carrier PY3GNA042060NA control board. Generic switches frequently carry ±15% tolerance, which can cause nuisance lockouts or — worse — allow ignition attempts under unsafe draft conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power before starting. Tools needed: 1\/4\" nut driver, needle-nose pliers, and a manometer or magnehelic gauge to verify post-install set point. Photograph hose routing and terminal wiring before removal. Replace pressure tubing if cracked or brittle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the \u003cstrong\u003eCarrier PY3GNA042060NA\u003c\/strong\u003e packaged gas\/electric unit. Also fits select Bryant and Payne models requiring a 0.18\" WC draft pressure switch — verify your unit's data plate and existing switch markings before ordering. Our HVAC parts specialists are available to confirm fitment prior to purchase.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640478519667,"sku":"CARRIE-PY3GNA042060NA-PRESSURE_SWITCH-HK06WC061","price":46.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640478552435,"sku":"CARRIE-PY3GNA042060NA-PRESSURE_SWITCH-HK06WC061-GEN","price":40.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK06WC061_f5f7dba0-6ced-4d17-abc0-4411a32e427b.jpg?v=1775027545","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3gna042060na-pressure-switch-h43sg3","provider":"National HVAC Parts","version":"1.0","type":"link"}