{"product_id":"oem-goodman-primary-limit-switch-for-vms80403anaa-20162901","title":"OEM Goodman Primary Limit Switch for VMS80403ANAA — 20162901","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman 20162901 Primary Limit Switch\u003c\/strong\u003e is a genuine OEM high-temperature safety control engineered specifically for the \u003cstrong\u003eVMS80403ANAA\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. Mounted on the heat exchanger or burner assembly, this normally-closed thermal switch continuously monitors supply-air temperature and opens the ignition\/gas circuit if the furnace overheats — protecting the heat exchanger, blower housing, and your home from unsafe operating conditions.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Primary high-limit \/ auto-reset thermal switch\u003c\/li\u003e\n\u003cli\u003eFunction: Opens gas valve circuit on overtemperature\u003c\/li\u003e\n\u003cli\u003eFit: Goodman VMS80403ANAA and cross-compatible 80% AFUE furnaces\u003c\/li\u003e\n\u003cli\u003eTerminals: Factory-matched spade connectors\u003c\/li\u003e\n\u003cli\u003ePart Number: 20162901 (OEM)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis is a \u003cstrong\u003egenuine Goodman OEM part\u003c\/strong\u003e, calibrated to the exact trip temperature and physical mounting the VMS80403ANAA was designed around. Generic universal limit switches often carry the wrong trip point or mounting bracket, which can cause nuisance lockouts or, worse, fail to trip when needed. For a safety-critical control, we recommend the OEM part.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e A do-it-yourself replacement for most homeowners with basic tools. \u003cstrong\u003eAlways disconnect power to the furnace before servicing.\u003c\/strong\u003e Remove the two mounting screws, transfer the wire leads one at a time to avoid mix-ups, and reinstall. If you are unsure why the original switch failed, have a licensed HVAC technician verify there is no underlying airflow or heat-exchanger problem.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058208719219,"sku":"GOODMAN-13670","price":26.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-limit-switch-for-vms80403anaa-20162901","provider":"National HVAC Parts","version":"1.0","type":"link"}