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Hello, tell me which color of wires connected which terminals on the old thermostat, and which color wired to which terminals on the new thermostat.
Did you unplug the furnace when changing the thermostat>
Thanks, ***** ***** most likely blew the 3 amp automotive type fuse in the printed circuit card where the thermostat wires connect (that's inside the blower compartment)
There are two compartment doors on the front of the furnace, remove them both, you will see the blower inside one of them with the printed circuit board mounted on the blower
The 3 amp fuse is pressed into the printed circuit board it does not unscrew in most cases..it has a big 3 on it
Remove the entire front panel, there should be no more than 2 screws