Lennox G20Q3/4E-100-3 furnace will not stay on
Hello, I have a Lennox G20Q3/4E-100-3 furnace that I need some help with. The furnace lights but will not stay on. The damper motor is making a clicking sound. It seems to want to operate but is hitching as it tries to move the damper door and makes that clicking noise and the furnace shuts off almost immediately. The damper door switch looks good. No swelling. No burnt look. It detents and makes the clicking sound as one would expect from this type of switch. I'm thinking that since the burners are igniting that the flame sensor is good. This model also has a heating element that looks like a U shaped bar. It look good but I don't know how to test it. Does this sound like the damper motor?
Comments
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It seems like a bad damper motor. It gets powered open only after the pressure switch proves. The clicking is usually the gears slipping.
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