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
bmupton wrote:I had to examine with a mirror to find the issues. Including removing the entire furnace.smkettner wrote:
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.
I'll take a look. The furnace is under the pantry, and I'm not sure where the access is (I think there are four screws and that panel comes off, I'll have to see). The vents appear to have decent air flow out of them, but you never know.
