Furnace Cycling - SOLUTION w/ Pictures
EDIT: This turned out to be an air flow issue. The solution was quite simple. The furnace has three knockouts on the back when using flexible vent duct adapted to hard in-floor ducting. Crossroads has...
Forum Discussion
Besides heat blowing direct on the thermostat... also check for air flow restrictions that could trigger the high limit switch. Mine had collapsed and poorly aligned ducting when originally built and the burner would cycle every one to three minutes.
