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I rechecked the wiring and found a loose connection at the other end of a wire (not connected to the limit control) and it works fine now, thanks for the help.

Another thing is that the new control has a manual button to shut off the fan and the old one didn't, or maybe the old one had been taken off. Either way, the new one doesn't seem to do anything. If...

Also, I replaced the thermostat after I started having the problem and that didn't solve it either.

The install was simple, there were only 2 wires to connect. The dealer did tell me to clip a tab off it, which I did. It said something about "low voltage."

I have a Lennox Pulse 21 furnace and the fan won't work when I have the heat set on auto. The furnace will start, but after about a minute it shuts off without the fan ever starting. If I leave the...