OEM Lennox Flame Rollout Switch — 60M61

The genuine OEM Lennox 60M61 flame rollout switch is a critical safety device that protects your Lennox gas furnace from dangerous conditions. Mounted near the burner assembly, it monitors for flames rolling out of the combustion chamber — a sign of blocked heat exchanger passages, restricted venting, or inadequate combustion air. If abnormal heat is detected, the switch instantly shuts off the gas supply to prevent damage and hazard.

Common failure symptoms: When a flame rollout switch trips or fails, the furnace typically locks out and stops producing heat, often accompanied by a fault code on the control board. A tripped switch may indicate an underlying combustion problem, while a switch that has aged or opened permanently will prevent the furnace from firing at all. You may notice no heat, short cycling, or repeated ignition lockouts.

Why OEM matters: Because the 60M61 is a safety component, using the exact Lennox-specified part is essential. OEM switches are calibrated to the precise trip temperature required for your furnace model and mount correctly in the factory bracket location. Substitute parts with incorrect ratings can fail to protect the system or cause nuisance trips. Always pair replacement with inspection of the heat exchanger and venting.