{"product_id":"oem-goodman-primary-limit-temperature-control-20162904","title":"OEM Goodman Primary Limit Temperature Control — 20162904","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman 20162904 Primary Limit Temperature Control\u003c\/strong\u003e is a genuine OEM high-limit switch for the Goodman\/Amana \u003cstrong\u003eAMH80603AXBA\u003c\/strong\u003e gas furnace. Mounted on the heat-exchanger bulkhead, this auto-reset control continuously senses supply-air temperature and opens the gas-valve circuit if the plenum overheats — typically caused by restricted airflow, a dirty filter, a failed blower, or closed registers. When temperatures return to normal, it automatically closes and allows heating to resume.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 20162904\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Primary (main) high-limit temperature control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset:\u003c\/strong\u003e Automatic (snap-disc)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAction:\u003c\/strong\u003e Normally closed, opens on over-temperature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Model:\u003c\/strong\u003e AMH80603AXBA and compatible Goodman\/Amana furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe primary limit is factory-calibrated to a precise cut-out temperature matched to this furnace's heat exchanger and blower design. Installing an OEM 20162904 guarantees the correct trip point and disc length. Generic substitutes with incorrect calibration can cause short-cycling on limit or, worse, fail to protect the heat exchanger. For a safety control, OEM is strongly recommended.\u003c\/p\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDifficulty: Easy–Moderate (2\/5).\u003c\/strong\u003e About 15–20 minutes. Disconnect power, remove the two mounting screws and the wire terminals, and install the replacement in the identical position and orientation. If the furnace was tripping on limit, correct the underlying airflow problem — replace the filter and verify blower operation — before restarting.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057605558643,"sku":"GOODMAN-5132","price":35.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-limit-temperature-control-20162904","provider":"National HVAC Parts","version":"1.0","type":"link"}