{"product_id":"oem-goodman-150-f-primary-limit-switch-for-amvm971005cnaa-20162903","title":"OEM Goodman 150°F Primary Limit Switch for AMVM971005CNAA — 20162903","description":"\u003ch2\u003eGoodman 20162903 Primary Limit Switch (150°F)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003e20162903\u003c\/strong\u003e is a genuine Goodman OEM primary high-limit switch rated at \u003cstrong\u003e150°F\u003c\/strong\u003e for the \u003cstrong\u003eAMVM971005CNAA\u003c\/strong\u003e modulating variable-speed gas furnace. Mounted on the heat-exchanger bulkhead, this auto-reset thermal switch continuously monitors supply-air temperature and opens the control circuit if the plenum overheats — typically from restricted airflow such as a dirty filter, failed blower, or closed ducts. When temperatures return to normal, the switch automatically closes and restores heating.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart type: Primary high-limit switch (auto-reset)\u003c\/li\u003e\n\u003cli\u003eTrip temperature: 150°F open point\u003c\/li\u003e\n\u003cli\u003eOEM part number: 20162903\u003c\/li\u003e\n\u003cli\u003eCompatible model: AMVM971005CNAA (AMVM97 series)\u003c\/li\u003e\n\u003cli\u003eEquipment: 100,000 BTU modulating condensing furnace\u003c\/li\u003e\n\u003cli\u003eContacts: Normally closed, opens on overtemperature\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003ePrimary limit switches are matched to the furnace by both trip temperature and bracket geometry. The \u003cstrong\u003egenuine Goodman 20162903\u003c\/strong\u003e carries the exact 150°F setpoint and mounting profile the AMVM97 requires. An incorrectly-rated aftermarket switch causes short-cycling or lets the heat exchanger run too hot — always match the OEM spec on a safety control.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate (2\/5).\u003c\/strong\u003e Cut power and gas, photograph the wiring, remove the two mounting screws, transfer the terminals, and reinstall in the same orientation. Standard hand tools. If the switch was tripping, diagnose and clear the airflow restriction first.\u003c\/p\u003e\u003cp\u003eShips fast from National HVAC Parts — verify your model number for an exact fit.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058006737267,"sku":"GOODMAN-9303","price":27.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150-f-primary-limit-switch-for-amvm971005cnaa-20162903","provider":"National HVAC Parts","version":"1.0","type":"link"}