{"product_id":"oem-goodman-primary-limit-control-for-amvc81005cnaa-20162904","title":"OEM Goodman Primary Limit Control for AMVC81005CNAA — 20162904","description":"\u003cp\u003eThe genuine OEM Goodman \u003cstrong\u003e20162904 Primary Limit Temperature Control\u003c\/strong\u003e is the main high-limit safety switch for the Goodman\/Amana \u003cstrong\u003eAMVC81005CNAA\u003c\/strong\u003e gas furnace. Mounted on the heat-exchanger bulkhead, it continuously monitors supply-air temperature and shuts off the gas valve if the furnace overheats — typically from a dirty filter, blocked ductwork, or a failed blower. It automatically resets once temperatures return to a safe range.\u003c\/p\u003e\u003cp\u003eSymptoms of a failed primary limit include short-cycling on heat, the blower running continuously, or no heat at all. Installing the exact OEM control restores accurate over-temperature protection and normal furnace operation.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: 20162904\u003c\/li\u003e\n\u003cli\u003eComponent: Primary high-limit temperature control\u003c\/li\u003e\n\u003cli\u003eFits Model: AMVC81005CNAA (Goodman\/Amana)\u003c\/li\u003e\n\u003cli\u003eContacts: Normally closed, opens on over-temperature\u003c\/li\u003e\n\u003cli\u003eReset: Automatic\u003c\/li\u003e\n\u003cli\u003eEquipment Type: Gas furnace safety control\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe primary limit's trip temperature and sensor length are calibrated to this specific furnace's airflow and cabinet. A generic substitute with a different setpoint risks nuisance shutdowns or failure to protect the heat exchanger. OEM ensures factory-spec protection.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty: Moderate\u003c\/h3\u003e\u003cp\u003eRequires accessing the heat-exchanger area, transferring wiring, and confirming correct sensor insertion depth. Recommended for a qualified HVAC technician. Replace a clogged filter and confirm proper airflow, since restricted airflow is the most common cause of limit trips. Disconnect power before servicing.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057871733107,"sku":"GOODMAN-8534","price":54.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-limit-control-for-amvc81005cnaa-20162904","provider":"National HVAC Parts","version":"1.0","type":"link"}