{"product_id":"oem-goodman-150-f-primary-limit-switch-for-amvm970804cnaa-20162903","title":"OEM Goodman 150°F Primary Limit Switch for AMVM970804CNAA — 20162903","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman 20162903 Primary Limit Switch\u003c\/strong\u003e is a genuine OEM \u003cstrong\u003e150°F\u003c\/strong\u003e high-limit safety control for the \u003cstrong\u003eAMVM970804CNAA\u003c\/strong\u003e variable-speed modulating gas furnace. Mounted on the heat-exchanger partition, this snap-disc switch monitors supply-air temperature and opens the gas-valve circuit if the furnace overheats — typically from restricted airflow, a dirty filter, or blower failure. Unlike the manual-reset rollout switch, the primary limit is \u003cstrong\u003eauto-reset\u003c\/strong\u003e: it re-closes once temperatures return to normal, cycling the burner to keep the heat exchanger within safe limits.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 20162903 (OEM Goodman\/Amana)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Primary high-limit snap-disc switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip Setpoint:\u003c\/strong\u003e 150°F (opens on rise)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset:\u003c\/strong\u003e Automatic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContacts:\u003c\/strong\u003e Normally closed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman\/Amana AMVM970804CNAA and compatible AMVM97-series furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM limit switch\u003c\/strong\u003e is factory-calibrated to the correct 150°F trip point and matches Goodman's mounting bracket and disc size exactly. Generic switches with a different setpoint can cause short-cycling or fail to protect the heat exchanger. For a safety-critical control, always fit the OEM part.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate\u003c\/strong\u003e — remove two screws, transfer the wiring, and confirm the disc seats flat against the heat-exchanger panel for accurate sensing. Recommended for HVAC technicians; also inspect airflow to find why it tripped. De-energize power and gas before servicing. Typical install: 20–30 minutes.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058006049139,"sku":"GOODMAN-20162903","price":32.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150-f-primary-limit-switch-for-amvm970804cnaa-20162903","provider":"National HVAC Parts","version":"1.0","type":"link"}