Hi, welcome to Just answer
How old is it ?
can you please tell me if the same problem was there even when the brushes were not replaced ?
Unplug the unit and plug it back after 2-3 minutes...simultaneously press and hold the Start/pause key for around 10 seconds
let me know if this will reset the control
no control not reset
which button did you press ? the start/stop or the start/reset ?
OK, the top two flashing lights indicate Communication error between electronic control boards and wiring harness...you will have to take it apart and then check the wiring from the control
you can pull the connectors from the control board out one at time
and then plug them back in
check the connections to the motor, if everything appears fine the electronic module will need replacement
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