{"product_id":"oem-goodman-m4-primary-limit-switch-for-amh951155dxaa-20162906","title":"OEM Goodman M4 Primary Limit Switch for AMH951155DXAA — 20162906","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman 20162906 M4 Primary Limit Switch\u003c\/strong\u003e is a genuine OEM high-limit safety control for the Amana\/Goodman \u003cstrong\u003eAMH951155DXAA\u003c\/strong\u003e gas furnace. This normally-closed thermal switch monitors heat-exchanger temperature and cuts power to the gas valve if the furnace overheats — protecting the heat exchanger and your home from unsafe temperatures. A tripped or failed limit switch is a common cause of short-cycling, no-heat calls, and blower lockouts.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 20162906\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e M4 primary high-limit switch (auto-reset thermal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Normally closed; opens on over-temperature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman\/Amana AMH951155DXAA and related furnaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Factory bracket, direct plug-in terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquipment:\u003c\/strong\u003e Gas furnace\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOEM vs. Generic:\u003c\/strong\u003e This OEM limit switch is calibrated to the exact trip temperature and mounting position specified for your furnace's heat exchanger. Generic limits with the wrong trip point can nuisance-trip or, worse, fail to protect the unit. For a safety control, always match the factory part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstall difficulty:\u003c\/strong\u003e Easy (2\/5). Disconnect power, unplug the two wire leads, remove the mounting screws, and swap in the new switch. Typically a 10–15 minute repair. Verify furnace cycles fully after replacement; persistent tripping usually points to a dirty filter or blower issue, not the switch.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057680302451,"sku":"GOODMAN-6621","price":24.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-m4-primary-limit-switch-for-amh951155dxaa-20162906","provider":"National HVAC Parts","version":"1.0","type":"link"}