Not sure if this is normal but if I put the heat up or change from the footwell to windscreen vents, the blower will speed up by its self, will do a few bars every minute and before you know it its almost on full. Could this be a fault in the unit itself?

Also I can hear the servos that control the airflow direction always adjusting them selfs, even when the ignition is off the right side heat servo is still making a noise.

Can anyone help with this or had similar problems?