Lennox 47K18 Flame Rollout Switch/Thermostat, 400F, Manual Reset

A Lennox 47K18 Flame Rollout Switch/Thermostat interrupts the circuit when heat reaches unsafe levels to guard internal components in the system.

• Real OEM switches and buttons support efficient system response, reducing unnecessary downtime and keeping performance steady under routine demand
• Fits Popular Models: GCS26X-048-100-01, GCS26-024-50-01, GCS29-036-75-2P
• Product Type: Flame Rollout Switch/Thermostat
• Switch Action: Manual Reset
• Temperature Rating: 400F

Common Questions and Answers

What is the role of the Lennox 47K18 Flame Rollout Switch/Thermostat in maintaining performance within the system?

The flame rollout switch/thermostat monitors for unsafe flame rollout conditions and opens the circuit when temperatures reach its 400F threshold, shutting down the heating and cooling unit to protect critical components. Its manual reset design matters because it requires inspection before restarting, which supports safer operation and more reliable performance within the HVAC system.

What issues indicate that the Lennox 47K18 Flame Rollout Switch/Thermostat may be nearing the end of its useful life?

The flame rollout switch/thermostat may be nearing replacement if the heating and cooling equipment shuts down unexpectedly, will not reset properly or experiences repeated safety trips that can interrupt normal operation. Physical signs can include heat damage, corrosion, discoloration or weakened terminals and environmental signs may include exposure to excessive burner heat, debris buildup or moisture that could affect consistent performance.