I have a Lennox furnace that's approx. 10 years old and with the cold weather coming here in Iowa I turned the gas furnace on the other night and nothing came out but cold air. It has an intermittent pilot ignition system on it and it was not even attempting to ignite. Long story short I changed the Sensor and the ignitor and still nothing. I don't even smell gas when the valve is on. My hot water heater and stove are working fine so why am I not smelling gas if the system is on. Thanks guys in advance.
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Has anyone had an occurrence of a Laser 730 or 731 over firing?
The top of the heat chamber and the heat exchanger glow red on high when this occurs....
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