how to fix my c710bf21eb4-e9 treadmill?

When ever I try to start it it counts down 3,2,1 then starts, but the speedo says 1mph but the motor doesn't move, if i change speed still nothing happens and after 10seconds or so it turns on and the left hand display reads "E1"
Please can someone tell me what this means as i have lost the manual!! ;)