{"product_id":"oem-goodman-primary-limit-temperature-control-ams81005cxad-20162904","title":"OEM Goodman Primary Limit Temperature Control AMS81005CXAD — 20162904","description":"\u003cp\u003eThe Goodman \u003cstrong\u003e20162904 Primary Limit Temperature Control\u003c\/strong\u003e is a genuine OEM high-limit switch for Goodman and Amana \u003cstrong\u003eAMS81005CXAD\u003c\/strong\u003e gas furnaces. Mounted on the heat exchanger bulkhead, it continuously senses supply-air temperature and opens the gas valve circuit if the furnace overheats — typically from restricted airflow such as a clogged filter, closed registers, or a failing blower. Unlike a manual rollout switch, this primary limit is auto-reset and will restore operation once temperatures return to a safe range.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart type: Primary high-limit temperature control\u003c\/li\u003e\n\u003cli\u003eReset: Automatic\u003c\/li\u003e\n\u003cli\u003eFunction: Heat-exchanger overheat protection\u003c\/li\u003e\n\u003cli\u003eFit: Goodman \/ Amana AMS81005CXAD and compatible models\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: 20162904\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM 20162904\u003c\/strong\u003e carries the factory-calibrated trip and reset set points and the correct mounting bracket geometry. Generic limits with different set points can cause short-cycling or fail to protect the heat exchanger. For a primary safety control, OEM is strongly recommended.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e Disconnect power, unplug the two wire leads, remove the mounting screws, and swap. Confirm the sensing element clears the heat exchanger and airflow path. Restore airflow issues before returning the furnace to service.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057713234291,"sku":"GOODMAN-7162","price":35.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-limit-temperature-control-ams81005cxad-20162904","provider":"National HVAC Parts","version":"1.0","type":"link"}