Description
The Lennox 28M97 is an OEM replacement flame sensor designed to maintain safe and efficient operation in compatible Lennox furnace systems. The flame sensor plays a critical role in the furnace ignition sequence — it detects the presence of a burner flame and signals the control board to keep the gas valve open. If no flame is sensed, the control board shuts off the gas supply, preventing dangerous unburned gas accumulation.
Replacing a worn or failed flame sensor is one of the most common furnace service repairs and can resolve issues such as short cycling, failure to stay lit, or repeated ignition lockout faults. The Lennox 28M97 restores proper flame-sensing function and helps return the system to reliable, safe operation.
Key Features
- OEM Lennox replacement flame sensor — SKU 28M97
- Ensures accurate flame detection for safe furnace operation
- Prevents gas valve from remaining open when no flame is present
- Resolves common symptoms: short cycling, ignition lockout, failure to stay lit
- Designed for compatibility with select Lennox furnace models
- Supports reliable ignition sequence and system safety
Application
The Lennox 28M97 Flame Sensor is intended for use as a direct OEM replacement in compatible Lennox gas furnace systems. Always verify compatibility with your specific furnace model before installation. Consult your equipment documentation or a qualified HVAC technician for proper installation and system verification.
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