{"product_id":"oem-goodman-primary-limit-switch-control-for-gch950704cxac-20162904","title":"OEM Goodman Primary Limit Switch Control for GCH950704CXAC — 20162904","description":"\u003ch3\u003eGoodman 20162904 Primary Limit Temperature Control\u003c\/h3\u003e\u003cp\u003eThe Goodman 20162904 is the primary high-limit safety switch for the \u003cstrong\u003eGCH950704CXAC\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. Mounted on the heat exchanger or in the supply plenum, this control continuously monitors furnace temperature and interrupts the burner circuit if heat exceeds a safe threshold — the key protection against a failed blower, dirty filter, or restricted duct causing the heat exchanger to overheat. A furnace that heats briefly then shuts off on limit, or fails to fire at all, often points to a tripped or failed limit control.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Primary high-temperature safety cutout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Automatic-reset snap-disc limit switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits model:\u003c\/strong\u003e GCH950704CXAC and cross-referenced Goodman\/Amana furnaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCircuit:\u003c\/strong\u003e Normally closed; opens on over-temperature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM part number:\u003c\/strong\u003e 20162904\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOEM vs. Generic\u003c\/h4\u003e\u003cp\u003eLimit switches are calibrated to a precise trip temperature and mounting-hole pattern for each furnace. Installing the exact OEM 20162904 guarantees the correct set point — a generic switch with the wrong temperature rating either nuisance-trips or, worse, fails to protect the heat exchanger. For a safety device, always use OEM.\u003c\/p\u003e\u003ch4\u003eInstallation Difficulty\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eModerate.\u003c\/strong\u003e Requires removing two mounting screws and transferring the wire terminals to the new switch. Cut all power at the disconnect first. If the old limit tripped, diagnose and correct the underlying airflow restriction (filter, blower, ductwork) before returning the furnace to service.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058063720819,"sku":"GOODMAN-9932","price":49.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-limit-switch-control-for-gch950704cxac-20162904","provider":"National HVAC Parts","version":"1.0","type":"link"}