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Armstrong 90+ Furnace Short Cycling

Phaus01

Member
Joined
Apr 7, 2020
Messages
1
Location
Akron Ohio
Model Number
EG6H80DC14-1
Brand
-brand-
Age
More than 10 years
My Armstrong 90+ EG6H80DC14-1 Furnace is short cycling. The igniter clicks and lights. The plenum burner then lights and burns for a few seconds and it shuts down. The process then starts over. While this is happening the blower motor for the exhaust continues to run. I am not sure it ever shuts off now. In the past I have cleaned and/or replaced the flame sensor, which I have just done (replaced) but it's not making a difference this time.

Thanks in advance!
Phil
 
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