{"product_id":"oem-goodman-m4-primary-limit-switch-for-ams951155dxa-20162906","title":"OEM Goodman M4 Primary Limit Switch for AMS951155DXA — 20162906","description":"\u003ch2\u003eGoodman 20162906 M4 Primary Limit Switch\u003c\/h2\u003e\u003cp\u003eThe Goodman 20162906 is a genuine OEM M4 primary high-limit switch for the \u003cstrong\u003eAMS951155DXA\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. This thermally activated safety control monitors heat-exchanger temperature and opens the circuit to shut off the burners if the furnace overheats — protecting against cracked heat exchangers, blower failures, and restricted airflow. A tripped or failed limit switch is a leading cause of a furnace that short-cycles or won't stay lit.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart number: 20162906\u003c\/li\u003e\n\u003cli\u003eType: M4 primary (high) limit switch\u003c\/li\u003e\n\u003cli\u003eFunction: Overheat \/ high-temperature safety cutout\u003c\/li\u003e\n\u003cli\u003eFits: Goodman\/Amana AMS951155DXA and compatible furnaces\u003c\/li\u003e\n\u003cli\u003eConfiguration: Auto-reset thermal disc, factory temperature calibrated\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM Goodman 20162906\u003c\/strong\u003e comes calibrated to your furnace's exact trip temperature — essential for a safety device. Our \u003cstrong\u003egeneric equivalent\u003c\/strong\u003e matches the mounting and temperature rating for reliable protection at a lower price. For a safety-critical control, OEM is strongly recommended.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e Cut power, unplug the two spade terminals, remove the mounting screws, and swap in the new switch. Under 15 minutes with a nut driver. Never bypass a limit switch.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057762681203,"sku":"GOODMAN-20162906","price":18.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-m4-primary-limit-switch-for-ams951155dxa-20162906","provider":"National HVAC Parts","version":"1.0","type":"link"}