{"product_id":"lennox-17j56-flame-sensor-065209300-pse-hc2-t6-2108","title":"Lennox P\/N 17J56 (T6-2108) – Genuine OEM Replacement Flame Sensor","description":"\u003ch1\u003e\u003cstrong\u003eLennox P\/N 17J56 (T6-2108) – Genuine OEM Replacement Flame Sensor\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe Lennox \u003cstrong\u003e17J56 \u003c\/strong\u003e(also known as Catalog Number \u003cstrong\u003e17J56 \u003c\/strong\u003eand Manufacturer Part Number \u003cstrong\u003eT6-2108\u003c\/strong\u003e) is a genuine \u003cstrong\u003eOEM flame sensor \u003c\/strong\u003edesigned specifically for use in a wide range of Lennox, Allied, Armstrong, Concord, and Ducane \u003cstrong\u003egas-fired furnaces\u003c\/strong\u003e and unit heaters. This critical safety component detects the presence of a flame within the combustion chamber, providing a continuous signal to the control board. If the control board does not receive this signal, it safely shuts off the gas flow, preventing the buildup of unburned gas and maintaining the safety of the heating system. \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eBeing a Genuine \u003cstrong\u003eOEM \u003c\/strong\u003epart from Lennox ensures optimal compatibility and reliability. Unlike universal or generic alternatives, this sensor is built with high-temperature resistant materials (glazed L-5 steatite insulator and copper-plated plate) to the exact specifications required by the furnace's safety circuits. This precision fit and validated functionality are crucial for preventing nuisance shutdowns and ensuring dependable, long-term performance. \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features and Function:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccurate Flame Detection:\u003c\/strong\u003e Monitors the burner flame to confirm safe ignition and continuous burner operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine OEM Reliability:\u003c\/strong\u003e Official part from Lennox, ensuring perfect fitment and validated functionality for compatible units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Built with high-temperature resistant materials designed to withstand temperatures up to 2200°F within the combustion chamber.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Integration:\u003c\/strong\u003e Plays a vital role in preventing gas leaks and ensuring safe operation of the heating system. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details and Key Specifications:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 17J56\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer: \u003c\/strong\u003eLennox (Genuine OEM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type: \u003c\/strong\u003eFlame Sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalog Number:\u003c\/strong\u003e 17J56\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel\/Part #:\u003c\/strong\u003e T6-2108\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions: \u003c\/strong\u003e7.5 in (Height) x 3.05 in (Width)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 0.114 in (Probe Diameter)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGross Shipping Weight:\u003c\/strong\u003e 2.5 LB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterials:\u003c\/strong\u003e Glazed L-5 steatite insulator; copper-plated plate; nickel-plated steel male terminal. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003e🛠️ HVAC Depot Pro Tip: The Annual Cleaning\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe most common cause of a faulty flame sensor (leading to a furnace that runs for a few minutes and then shuts off) is a buildup of carbon and oxidation on the sensor rod. Before replacing the T6-2108, try cleaning the existing rod with a light scrub using fine steel wool or an emery cloth. This often restores the sensor's ability to detect the micro-amp current of the flame, potentially saving a service call or the cost of a new part. \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eThe 17J56 is a direct OEM replacement for the following part numbers:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eOEM Numbers:\u003c\/strong\u003e\u003c\/h3\u003e\n17J56, T6-2108, 65209300, 17J5601, 20516002.\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eAllied\/Armstrong\/Ducane: \u003c\/strong\u003e\u003c\/h3\u003e\n66953. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eExtensive Model Compatibility List:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNote: Use 'CTRL+F' to search for your specific model and revision number: \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eLennox LD24 Series:\u003c\/strong\u003e\u003c\/h3\u003e\nLD24-75(A, S), LD24-100(A, S), LD24-125(A, S), LD24-150(A, S), LD24-200(A, S), LD24-250(A, S), LD24-300(A, S) (Various Revisions 01-04).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eLennox LF24 Series:\u003c\/strong\u003e\u003c\/h3\u003e\nLF24-30A, LF24-45A, LF24-50(A, S), LF24-60A, LF24-75(A, S), LF24-100(A, S), LF24-115(A, S), LF24-125(A, S), LF24-145(A, S), LF24-150(A, S), LF24-175(A, S), LF24-200(A, S), LF24-230(A, S), LF24-250(A, S), LF24-300(A, S), LF24-345(A, S), LF24-400(A, S) (Various Revisions).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eOther Compatible Models:\u003c\/strong\u003e\u003c\/h3\u003e\nSpecific models in the CGHA30, CGHA45, and CGHA60 series\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":52878279016811,"sku":"66255112542","price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/17J56.jpg?v=1770053646","url":"https:\/\/tophvacparts.com\/products\/lennox-17j56-flame-sensor-065209300-pse-hc2-t6-2108","provider":"HVAC Parts and Equipment Depot Open To Homeowners and Contractors","version":"1.0","type":"link"}