Hello!

I have a Lennox furnace that is approximately 10 years old. When the thermostat calls for heat, the ignitor lights and after a few seconds, a flame ignites across. After a few more seconds the blower comes on. However, after a few more seconds the blower turns off. The blower continues to 'cycle' in this matter a couple more times until, I believe a limit switch is activated causing the gas to the burner to cease. I also attempted to run the blower in the 'on' position continuously without the thermostat calling for the furnace to come on. It came normally, but again shut off after several seconds... probably about 30-45.

Any suggestions would be appreciated.

Anne