{"product_id":"oem-goodman-primary-limit-temperature-control-for-ams80804bxad-20162904","title":"OEM Goodman Primary Limit Temperature Control for AMS80804BXAD — 20162904","description":"\u003cp\u003eThe Goodman \u003cstrong\u003e20162904 Primary Limit Temperature Control\u003c\/strong\u003e is the genuine OEM high-limit safety device for the \u003cstrong\u003eAMS80804BXAD\u003c\/strong\u003e furnace. Mounted on the heat-exchanger bulkhead, this primary limit continuously senses supply-air temperature and opens the control circuit if the furnace exceeds its safe operating range — cutting the gas valve to protect the heat exchanger, wiring, and cabinet from heat damage. Unlike a manual-reset switch, the primary limit is typically an auto-reset control that closes again once temperatures return to normal, so it also cycles the burners on airflow faults.\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 limit \/ high-temperature safety control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAction:\u003c\/strong\u003e Normally closed, opens on overtemperature (auto-reset)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Model:\u003c\/strong\u003e AMS80804BXAD (80% AFUE, 80,000 BTU furnace)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman OEM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe OEM 20162904 uses the exact trip setpoint, sensing-element length, and mounting flange Goodman specified for this furnace. A generic limit with the wrong temperature rating or probe depth can nuisance-trip on every call for heat, or worse, fail to protect against a genuine overheat. For this safety-critical control, the factory OEM part is the correct and recommended replacement.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5).\u003c\/strong\u003e Disconnect power, note terminal orientation, unplug the wire leads, remove the two mounting screws, and install the new limit flush against the heat-exchanger panel so the probe seats correctly. Reconnect and run a heat cycle to confirm normal operation. About 15–20 minutes. If it keeps tripping, investigate airflow before replacing again.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057695015283,"sku":"GOODMAN-6984","price":35.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-limit-temperature-control-for-ams80804bxad-20162904","provider":"National HVAC Parts","version":"1.0","type":"link"}