{"product_id":"oem-goodman-primary-high-limit-switch-for-amh80403axbb-20162901","title":"OEM Goodman Primary High-Limit Switch for AMH80403AXBB — 20162901","description":"\u003ch2\u003eGoodman 20162901 Primary Limit Switch\u003c\/h2\u003e\n\u003cp\u003eThe Goodman 20162901 is a genuine OEM primary high-limit switch designed for the AMH80403AXBB gas furnace. Mounted on the heat-exchanger or blower deck, this temperature-sensing safety control monitors supply-air heat and opens the gas circuit if the furnace overheats — typically from a dirty filter, failed blower, or restricted ductwork. When the temperature returns to normal, the auto-reset switch closes and allows the furnace to fire again. A furnace that short-cycles on limit or fails to heat is often traced to a faulty primary limit switch.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePart Number: 20162901\u003c\/li\u003e\n\u003cli\u003eType: Primary high-limit switch (auto reset)\u003c\/li\u003e\n\u003cli\u003eCircuit: Normally closed (opens on overheat)\u003c\/li\u003e\n\u003cli\u003eFunction: Supply-air over-temperature protection\u003c\/li\u003e\n\u003cli\u003eFits: Goodman\/Amana AMH80403AXBB furnace\u003c\/li\u003e\n\u003cli\u003eType: OEM exact-fit replacement safety control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\n\u003cp\u003eThe genuine OEM 20162901 is matched to Goodman's precise trip and reset temperatures and mounting footprint, ensuring proper over-temperature protection and correct furnace cycling. Generic limit switches with mismatched set points can cause nuisance trips or, worse, fail to protect the heat exchanger. For safe, reliable operation, OEM is the correct choice.\u003c\/p\u003e\n\u003ch3\u003eInstall Difficulty: Easy\u003c\/h3\u003e\n\u003cp\u003eA common DIY repair. With power off, remove the two wire terminals, unscrew the switch from the burner box or blower deck, and mount the new switch in the identical position with the sensing element in the airstream. Reconnect the wiring. Estimated time: 10-15 minutes. Check the filter and blower to rule out the root cause of overheating.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057600905587,"sku":"GOODMAN-4974","price":44.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-high-limit-switch-for-amh80403axbb-20162901","provider":"National HVAC Parts","version":"1.0","type":"link"}