I have a XB80 gas heating unit.
I noticed the blower motor has stopped working. Is there a way to reset it after changing all the filters and a complete vacuuming.

There may by a high temp shutoff but if it ran super hot it may have burned the motor out. Have you tested the capacitor? Does the motor try to start?

After the furnace has been on for 30 seconds or so, measure voltage between the heaing speed fan terminal & neutral. You should get +/- 120volts AC. If you do not, the board is likely bad.