{"product_id":"oem-goodman-primary-limit-switch-for-acvc961005cnaa-20162907","title":"OEM Goodman Primary Limit Switch for ACVC961005CNAA — 20162906","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman 20162906 M4 Primary Limit Switch\u003c\/strong\u003e is a genuine OEM high-limit safety control engineered for the Goodman\/Amana \u003cstrong\u003eACVC961005CNAA\u003c\/strong\u003e modulating gas furnace and compatible 96% AFUE models. This normally-closed thermal switch monitors heat-exchanger and plenum temperature, opening the circuit to shut off the gas valve and burners if the furnace overheats — protecting the equipment, ductwork, and your home from unsafe operating conditions.\u003c\/p\u003e\u003cp\u003eA failed or out-of-spec primary limit switch is a common cause of short-cycling, no-heat calls, and lockout fault codes. Replacing it with the correct factory part restores reliable, code-compliant safety shutdown performance.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart type: Primary high-limit safety switch (M4 series)\u003c\/li\u003e\n\u003cli\u003eOEM part number: 20162906\u003c\/li\u003e\n\u003cli\u003eConfiguration: Normally closed, auto-reset thermal switch\u003c\/li\u003e\n\u003cli\u003eApplication: Gas furnace heat-exchanger \/ plenum limit\u003c\/li\u003e\n\u003cli\u003eCompatibility: Goodman \/ Amana ACVC961005CNAA and related 96% AFUE furnaces\u003c\/li\u003e\n\u003cli\u003eBrand: Genuine Goodman OEM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis is a \u003cstrong\u003egenuine Goodman OEM\u003c\/strong\u003e limit switch calibrated to the factory trip temperature for your exact furnace. Universal or generic limit switches are often set to a different cutout point, which can cause nuisance trips or — worse — fail to protect the heat exchanger. Choosing OEM guarantees the correct temperature rating, terminal layout, and mounting fit.\u003c\/p\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDifficulty: Easy (1\/5).\u003c\/strong\u003e A two-wire swap that most homeowners and all HVAC technicians can complete in minutes. Always disconnect power at the furnace before servicing. If the original limit tripped, diagnose the underlying cause (dirty filter, blocked airflow, failed blower) before returning the unit to service.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057489592691,"sku":"GOODMAN-2905","price":14.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-limit-switch-for-acvc961005cnaa-20162907","provider":"National HVAC Parts","version":"1.0","type":"link"}