{"product_id":"oem-goodman-primary-limit-temperature-control-for-vms81005cnaa-20162904","title":"OEM Goodman Primary Limit Temperature Control for VMS81005CNAA — 20162904","description":"\u003ch2\u003eGoodman 20162904 Primary Limit Temperature Control\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003e20162904\u003c\/strong\u003e is a genuine primary high-limit temperature control for \u003cstrong\u003eVMS81005CNAA\u003c\/strong\u003e gas furnaces and compatible Goodman\/Amana models. Mounted on the heat-exchanger bulkhead, this snap-disc limit monitors supply-air temperature and cuts the gas valve if airflow drops or the furnace overheats — protecting the heat exchanger and blower housing. It is the furnace's main overtemperature safeguard, so a failed or drifted limit is a common cause of short-cycling and no-heat lockouts.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Primary high-limit (auto-reset snap disc)\u003c\/li\u003e\n\u003cli\u003eContacts: Normally closed, opens on overtemperature\u003c\/li\u003e\n\u003cli\u003eSensing: Bimetal snap disc, factory-calibrated setpoint\u003c\/li\u003e\n\u003cli\u003eMount: Flange \/ bracket mount with spade terminals\u003c\/li\u003e\n\u003cli\u003eFits: Goodman VMS81005CNAA and related 80%\/90% furnaces\u003c\/li\u003e\n\u003cli\u003eOEM part number: 20162904\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe OEM 20162904 arrives calibrated to the exact open\/close temperatures Goodman specifies for this cabinet and heat exchanger. Generic limits with an approximate setpoint nuisance-trip in cold weather or, worse, allow the exchanger to overheat. Because this is the primary safety control, the genuine part is strongly recommended.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e Disconnect power, photograph the wiring, remove the two mounting screws, and install the replacement in the identical position and orientation. About 15–20 minutes. If the limit was tripping, correct any airflow restriction (filter, blower, ductwork) first. Professional service recommended for safety-limit diagnosis.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058211930483,"sku":"GOODMAN-13748","price":44.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-limit-temperature-control-for-vms81005cnaa-20162904","provider":"National HVAC Parts","version":"1.0","type":"link"}