{"product_id":"lennox-r38492b001-furnace-flame-sensor","title":"Lennox R38492B001 Furnace Flame Sensor","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe LENNOX R38492B001 is a furnace flame sensor designed to verify burner ignition and maintain safe furnace operation. The flame sensor generates a small microamp signal in the presence of a flame, which the control board reads to confirm combustion. If the signal is absent or too weak, the board initiates a lockout to prevent unburned gas from accumulating. This OEM-style replacement component is installed by licensed HVAC technicians during routine maintenance or when a furnace exhibits nuisance lockouts caused by a degraded or failed sensing rod.\u003c\/p\u003e\u003cp\u003eThis flame sensor is used in gas-fired residential and light commercial furnaces where a standing pilot or direct spark ignition system requires continuous flame verification during the heating cycle. It is suited for forced-air gas furnace applications where the original sensor has become coated with oxidation buildup or has failed to produce an adequate microamp reading, triggering repeated safety shutdowns.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eProvides microamp flame-presence signal to furnace control board for safe operation\u003c\/li\u003e\n\u003cli\u003eOEM-style replacement designed to restore proper lockout and ignition sequencing\u003c\/li\u003e\n\u003cli\u003eUsed specifically in gas furnace applications requiring continuous flame verification\u003c\/li\u003e\n\u003cli\u003eLightweight at 1.5 pounds for easy handling during service calls\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement flame sensor for residential and light commercial gas furnaces.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eA licensed HVAC technician should install this component. Shut off all electrical power and close the gas supply valve before beginning any service work. The sensing rod should be positioned correctly within the burner flame envelope per the furnace manufacturer's installation documentation. After installation, verify the microamp signal reading at the control board using a multimeter rated for microamp measurement to confirm proper flame detection.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Flame Sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUsed On\u003c\/strong\u003e: Furnace\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.5 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: LENNOX\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: R38492B001\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LENNOX","offers":[{"title":"Default Title","offer_id":51284019052850,"sku":"R38492B001","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/309278676.png?v=1781066209","url":"https:\/\/voomisupply.com\/products\/lennox-r38492b001-furnace-flame-sensor","provider":"Voomi Supply","version":"1.0","type":"link"}