Possible causes:

• Power failure/unit not plugged into a working receptacle.
• The overload protection has responded.
• The forward/reverse switch is not switched on.

Solutions:

• Check to make sure unit is plugged into a working outlet. Make sure extension cord is not damaged.
• Press the reset button and restart the unit in reverse mode to remove the jammed material. Wait one minute before restarting the unit.
• Press the forward end of the forward/ reverse switch.