I have a Panasonic mc-e8023 and lately it has started blowing all the hoovered dust out of the back of the unit. It is coming out around the power setting button and the filter at the back. I have cleared all the filters out and it is still doing it.

Alex12, October 2015

The air coming out the exhaust will have first passed through the motor - if it has dust and grit in it then so will the motor - damage will have been caused - the more you run it and the more dust there is then the greater the damage.

You can make or buy a new filter if necessary.

Get cleaning..., October 2015

At least one of the filters is probably ripped or punctured and need to be replaced.
Cleaning them may have worsened the existing damage. Correct cleaning should not cause any damage to undamaged filters if they are supposed to be cleaneable.

Electro, October 2015