{"product_id":"oem-goodman-auxiliary-limit-switch-for-wfm18140s5dncc-0130f00038","title":"OEM Goodman Auxiliary Limit Switch for WFM18140S5DNCC — 0130F00038","description":"\u003cp\u003eThe genuine OEM Goodman \u003cstrong\u003e0130F00038 Auxiliary Limit Switch\u003c\/strong\u003e (identified by its light-blue body) is the high-temperature safety cutout for the \u003cstrong\u003eWFM18140S5DNCC\u003c\/strong\u003e gas furnace. This thermal switch opens the control circuit if it senses an overheat condition — commonly caused by restricted airflow, a dirty filter, or blower failure — protecting the heat exchanger and cabinet from thermal damage. The blue color code corresponds to the factory-set trip temperature for this position.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: 0130F00038\u003c\/li\u003e\n\u003cli\u003eFunction: Auxiliary high-limit \/ overheat safety switch\u003c\/li\u003e\n\u003cli\u003eColor Code: Light blue (factory temperature rating)\u003c\/li\u003e\n\u003cli\u003eCompatible Model: WFM18140S5DNCC (Goodman gas furnace)\u003c\/li\u003e\n\u003cli\u003eAction: Normally closed, opens on over-temperature\u003c\/li\u003e\n\u003cli\u003eType: Direct factory replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eLimit switches are color-coded by trip point, and a mismatched generic switch can either nuisance-trip or fail to protect against a real overheat. Using the correct OEM 0130F00038 guarantees the trip temperature matches the WFM18140S5DNCC design spec — critical for a safety device.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy — DIY friendly (2\/5).\u003c\/strong\u003e Typically two mounting screws and two push-on terminals. Cut power before servicing. If the new switch trips again, diagnose the underlying airflow problem (filter, blower, ducting) rather than bypassing the switch.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058230247795,"sku":"GOODMAN-14172","price":5.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-auxiliary-limit-switch-for-wfm18140s5dncc-0130f00038","provider":"National HVAC Parts","version":"1.0","type":"link"}