{"product_id":"oem-goodman-150-f-primary-limit-switch-for-wfm18090s4bxcc-20162903","title":"OEM Goodman 150°F Primary Limit Switch for WFM18090S4BXCC — 20162903","description":"\u003ch2\u003eGoodman 20162903 Primary Limit Switch (150°F)\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003e20162903\u003c\/strong\u003e is a primary high-limit switch with a \u003cstrong\u003e150°F\u003c\/strong\u003e trip point, designed for the \u003cstrong\u003eWFM18090S4BXCC\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. Mounted on the heat exchanger or blower deck, this normally-closed control opens when supply-air temperature exceeds its rating and automatically closes once temperatures return to safe levels — protecting the furnace from overheating caused by restricted airflow, a dirty filter, or a failed blower.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip temperature:\u003c\/strong\u003e 150°F (open on rise)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Primary high-limit, auto-reset\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContacts:\u003c\/strong\u003e Normally closed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e 1\/4 in. quick-connect spade\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit:\u003c\/strong\u003e Goodman WFM18090S4BXCC and cross-compatible furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe trip temperature and mounting depth are matched exactly on this \u003cstrong\u003egenuine Goodman OEM\u003c\/strong\u003e switch. A generic limit with a different trip point or probe length can cause nuisance shutdowns or fail to protect the heat exchanger. For a temperature-critical safety device, OEM calibration matters.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e Disconnect power at the breaker, pull the two spade terminals, remove the mounting screws, and install the replacement in the same orientation. About 10–15 minutes with a nut driver. If the limit continues to trip, check the air filter, blower operation, and ductwork for airflow restrictions.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058226315635,"sku":"GOODMAN-14107","price":26.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150-f-primary-limit-switch-for-wfm18090s4bxcc-20162903","provider":"National HVAC Parts","version":"1.0","type":"link"}