When I power on 3 lights show on 1 module and 1 on another. When I start speed, one additional light shows (blinks) on 1st module and two more show (1 links) on 2nd module. Slow speed everything works fine. Higher speed (5-6 MPH) after about 1 minute the motor stops and all the lights on the second module goes out. After about 15 seconds, 2 of the lights on the 2nd module show (1 blinks). The only one that does not reshow is the SCR TRIG light on the 2nd module. If I adjust speed, nothing happens. If I bring speed back to 0 and then back up, again, the motor works and 3rd light displays. This has happened only recently. Some time ago, I would go for awhile at 6 MPH and the fuse would flow.