{"product_id":"oem-goodman-m4-primary-limit-switch-for-amec960603bnba-20162906","title":"OEM Goodman M4 Primary Limit Switch for AMEC960603BNBA — 20162906","description":"\u003ch2\u003eGoodman 20162906 M4 Primary Limit Switch\u003c\/h2\u003e\u003cp\u003eThe Goodman\/Amana \u003cstrong\u003e20162906\u003c\/strong\u003e M4 primary limit switch is a critical safety control that monitors heat-exchanger temperature in your furnace. If the plenum overheats — often from restricted airflow or a failed blower — the limit switch opens and shuts off the burners to prevent damage and hazardous conditions. This genuine OEM switch is calibrated for the \u003cstrong\u003eAMEC960603BNBA\u003c\/strong\u003e and matching Goodman\/Amana furnaces so it trips at the correct temperature and resets reliably.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: 20162906\u003c\/li\u003e\n\u003cli\u003eType: M4 Primary High-Limit Switch (auto-reset)\u003c\/li\u003e\n\u003cli\u003eFunction: Over-temperature safety cutout\u003c\/li\u003e\n\u003cli\u003eEquipment: Gas Furnace\u003c\/li\u003e\n\u003cli\u003eCompatible Model: AMEC960603BNBA (and select Goodman\/Amana furnaces)\u003c\/li\u003e\n\u003cli\u003eFactory-calibrated trip temperature\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe OEM 20162906 is set to the exact cut-out and cut-in temperatures Goodman specifies for this heat exchanger. Generic limit switches may trip at the wrong temperature, causing nuisance lockouts or, worse, failing to protect the furnace. As a safety device, the genuine OEM part is the recommended choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eRating: Easy to Moderate.\u003c\/strong\u003e The switch mounts to the burner or heat-exchanger bulkhead with two screws and two spade terminals. Turn off power and gas first, note wire positions, and match the mounting orientation. Most DIYers with basic tools can complete this in 15–30 minutes; when in doubt, use a licensed technician.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057574003059,"sku":"GOODMAN-4176","price":24.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-m4-primary-limit-switch-for-amec960603bnba-20162906","provider":"National HVAC Parts","version":"1.0","type":"link"}