Log in

View Full Version : Lennox model 80mgf3/4-100a1 no spark at call for heating


mytoystore2000
Nov 28, 2010, 08:37 PM
Hi, I have a lennox model 80MGF3/4-100A1 Furnace.. My problem is that when the unit is calling for heat the induce fan comes on and then I hear the board click that allows the blower motor fan to come on.. I never hear any sparking at the ignitor, I've cleaned the rods and bent them a little closer together still no spark. When the board is calling for heat the red LED is continuously blinkingwith the induce fan motor running. But, when the blower motor comes on the red LED starts blinking 3 times and then there is a pause and then blinks three more times.. am assuming this code means there is no flame.I've check voltage all across thhe board.. I have a feeling am not getting any voltage to the spark wire going to the spark ignitor.. how can I check if voltage is going through the wire to the spark ignitor?"