LIke he said, the temp on the thermostat has been satisfied if the FR=0. Raise your room temp setpoint up a few degrees and the FR should start to climb up slowly until the temp is satisfied then drop back down, it takes time, could take an hour or more, so the FR will fluctuate up and down to maintain a good temp. When its at IDLE and not calling for heat, the FR is typically 0 or very low.
Not sure what the red cord is? Where is it plugged in to the COaltrol? Stoker? Combustion? Convection?
Good luck and Enjoy!