Lennox 41K56 Hot Surface Ignitor – LB-109261A (768A-4)

OEM Part Number: LB-109261A
Catalog Number: 41K56
Replacement Part Number: 41K5601
Ignitor Type: Hot Surface Ignitor (HSI)
Ignitor Material: Silicon Nitride
Voltage: 80 VAC
Wattage: 92 Watts
Frequency: 50/60 Hz
Ignitor Length: 54 mm
Terminal Type: 2-Terminal AMP Receptacle (.084 Female Sockets)
Lead Type: White Teflon-Coated Leads
Ignition System: SureLight® System
Includes: White Rodgers 768A-4 Ignitor with Lead Wire

Common Symptoms of a Failed Hot Surface Ignitor

A worn or cracked ignitor is one of the most common furnace failures during the heating season. Signs that your Lennox 41K56 ignitor may need replacement include:

• Furnace will not ignite.
• Inducer motor starts but burners never light.
• Furnace attempts ignition several times before locking out.
• No heat from the furnace.
• Visible crack or broken ignitor element.
• Ignitor does not glow during the ignition sequence.
• Ignition failure or lockout fault codes.

Compatible Lennox Furnace Models

The Lennox 41K56 (LB-109261A) is used on numerous Lennox furnaces, including many models in the following series:

• G23 Series
• G24M Series
• G26 Series
• G27M Series
• G32 Series
• G40DF Series
• G40UH Series
• G41UF Series
• G43UH Series
• G50DF Series
• G50UH Series
• G51MP Series
• G60DF Series
• G60DFV Series
• G60UH Series
• G60UHV Series
• G61MP Series
• 80MGF Series
• 80UHG Series
• 90UGF Series

Throughout Alberta, homeowners in Calgary, Edmonton, Red Deer, Lethbridge, Medicine Hat, Fort McMurray, Grande Prairie, Airdrie, Sherwood Park, St. Albert, and Leduc commonly experience ignitor failures during extended periods of cold weather when furnaces are cycling frequently.

Across Ontario, including Toronto, Mississauga, Brampton, Vaughan, Markham, Richmond Hill, Oakville, Burlington, Hamilton, Ottawa, Kingston, Cornwall, London, Kitchener, Oshawa, Whitby, Ajax, Pickering, Barrie, and Sudbury, hot surface ignitors are among the most common furnace replacement parts during the winter months.