{"product_id":"oem-goodman-150f-primary-limit-switch-for-amvc80603bnbc-20162903","title":"OEM Goodman 150F Primary Limit Switch for AMVC80603BNBC — 20162903","description":"\u003ch2\u003eGoodman 20162903 Primary Limit Switch (150°F)\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003e20162903\u003c\/strong\u003e is a genuine OEM primary high-limit switch with a \u003cstrong\u003e150°F\u003c\/strong\u003e trip rating for the \u003cstrong\u003eAMVC80603BNBC\u003c\/strong\u003e and compatible Goodman\/Amana gas furnaces. Mounted on the heat-exchanger or blower deck, the primary limit monitors supply-air temperature and opens the circuit if the furnace overheats — typically due to restricted airflow, a dirty filter, or a failed blower. This protects the heat exchanger from thermal damage and prevents unsafe operating temperatures.\u003c\/p\u003e\u003cp\u003eWhen a primary limit fails open or drifts out of calibration, the furnace may short-cycle, blow cool air, or refuse to fire. Replacing it with the exact factory-rated switch restores correct high-temperature protection.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart type: Primary high-limit safety switch\u003c\/li\u003e\n\u003cli\u003eTrip temperature: 150°F\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: 20162903\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman \/ Amana\u003c\/li\u003e\n\u003cli\u003ePrimary fit: AMVC80603BNBC furnace\u003c\/li\u003e\n\u003cli\u003eFunction: Opens on over-temp to protect the heat exchanger\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eLimit switches must match both the trip temperature and mounting footprint exactly. The \u003cstrong\u003egenuine OEM Goodman\u003c\/strong\u003e 20162903 is calibrated to the AMVC series' 150°F specification. A generic switch with a different trip point can nuisance-trip on normal cycles or fail to protect against a real overheat. For a safety-critical part, choose OEM.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty: Easy to Moderate\u003c\/h3\u003e\u003cp\u003eWith power off, note the wiring, disconnect the terminals, remove the mounting screws, and install the new 20162903 in the identical location and orientation. Reconnect and test a full heat cycle. Typical replacement is 15–25 minutes. Never bypass or jumper a limit switch to keep the furnace running.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057855545715,"sku":"GOODMAN-8064","price":26.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150f-primary-limit-switch-for-amvc80603bnbc-20162903","provider":"National HVAC Parts","version":"1.0","type":"link"}