{"product_id":"oem-goodman-m4-primary-manual-reset-limit-switch-gks91155dxab-20162906","title":"OEM Goodman M4 Primary Manual Reset Limit Switch GKS91155DXAB — 20162906","description":"\u003ch2\u003eGoodman 20162906 M4 Primary Limit Switch\u003c\/h2\u003e\u003cp\u003eProtect your \u003cstrong\u003eGoodman GKS91155DXAB\u003c\/strong\u003e furnace from overheating with the genuine OEM 20162906 M4 primary limit switch. Mounted on the heat exchanger\/blower deck, this primary high-limit control continuously monitors supply-air temperature and de-energizes the gas valve if airflow is restricted or temperatures exceed the safe threshold. It is the furnace's main over-temperature safeguard, preventing heat-exchanger damage and unsafe operation caused by dirty filters, closed registers, or blower failure.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: M4 primary high-limit switch (SPST, normally closed)\u003c\/li\u003e\n\u003cli\u003eFunction: Primary over-temperature safety cutout\u003c\/li\u003e\n\u003cli\u003eReset: Manual reset\u003c\/li\u003e\n\u003cli\u003eMounting: OEM heat-exchanger\/blower-deck bracket\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GKS91155DXAB and compatible models\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: 20162906\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003egenuine OEM\u003c\/strong\u003e 20162906 is factory-calibrated to the exact M4 trip temperature Goodman specifies for the GKS91155DXAB. Aftermarket limits with different ratings can nuisance-trip or fail to protect at the correct threshold. As the primary safety limit, the OEM-calibrated part is the reliable choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5)\u003c\/strong\u003e — Turn off power and gas. Disconnect the two leads, remove the mounting screws, install the new limit in the same orientation, and reconnect. Investigate any repeated trips (airflow, filter, blower) before returning to service. Professional service recommended if the fault is unclear.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058100912499,"sku":"GOODMAN-10924","price":26.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-m4-primary-manual-reset-limit-switch-gks91155dxab-20162906","provider":"National HVAC Parts","version":"1.0","type":"link"}