626499 Furnace Flame Rollout Limit Switch Manual Reset L145F Compatible with Nordyne Fits M3RL Series

The 626499 flame rollout limit switch serves as a critical safety component in compatible furnace systems, designed to prevent hazardous overheating around burner assemblies. This switch continuously monitors temperatures in the combustion area, interrupting the ignition sequence when heat reaches 145°F to stop flame rollout and furnace operation—a common solution for furnaces that shut off after running for a few minutes due to ventilation issues. How It Functions： As a normally closed switch, it maintains circuit continuity during normal operation. When excessive heat from improper venting or inadequate airflow is detected, the switch opens to cut off the fuel supply. A manual reset button is included, but operation requires allowing the component to cool completely first, ensuring users inspect ventilation systems (including clear exhaust vents and proper inducer fan function) before restoring operation—adding an essential safety checkpoint. Compatible Models： This limit switch fits the following furnace models: M3RL 060A AW M3RL 080A BWT M3RL 060A BW M3RL 060A BWT M3RL 080A AW M3RL 080A BW Always verify your furnace’s exact model number against the manufacturer’s specifications to confirm compatibility. Installation & Testing Guidelines： Disconnect furnace power before beginning any work Locate existing switch near burner housing (typically secured with mounting screws) Test old switch for continuity using a multimeter—replace if no continuity is detected Secure new switch in position and reconnect wires following original configuration Allow complete cooling before manual reset, then confirm proper ventilation before powering on Package includes 1 x 626499 furnace flame rollout limit switch with manual reset.

• 145°F safety cutoff：Opens at 145°F to halt ignition sequence when burner area overheats, preventing flame rollout hazards
• M/R with cooling requirement：Must be manually reset after activation, requiring complete cooling before operation to ensure safe restart
• Fits specific M3RL models：Compatible with M3RL 060A AW, M3RL 080A BWT, M3RL 060A BW, M3RL 060A BWT, M3RL 080A AW, M3RL 080A BW
• Flame rollout protection：Monitors burner surrounding temperature to address insufficient airflow or vent obstruction issues
• Continuity testable：Check functionality with a multimeter for continuity to confirm replacement necessity