REASON

• The machine is about to apply cleaner and the duster up switch is activated.
• The machine is running and the LDS distance is greater than 1 foot, and the duster up switch is activated.
• When testing the input and output for this function, the duster is lowered and the duster up switch is engaged for more than 4 seconds.      

POSSIBLE CAUSES

• Blown fuse (.5A)
• Bad fuse holder
• One or both of the duster up switches are stuck
• Duster cloth is empty
• CR-4 Duster unwind relay failed
• The Green/Blue duster motor wire is damaged
• Loose wire between the motor and CR-4
• Duster unwind motor has failed