1) THE WIRING OF THE DUST CATCHER IS NOT OK:
SOLUTION 1) CHECK IF THE WIRING OF THE DUST CATCHER IS WELL CONNECTED OR NOT. RECONNECT IF NEEDED
2) THE DUST CATCHER IS DIRTY:
SOLUTION 2) REMOVE THE DIRT OF THE DUST CATCHER
3) THE DUST CATCHER IS BROKEN:
SOLUTION 3) REPLACE WITH A NEW CORRESPONDING DUST CATCHER
4) THE PCB IS BROKEN:
SOLUTION 4) REPLACE WITH A NEW CORRESPONDING PCB