I've had an Error 10 code.
The Controller is b0rked. I buggered my controller because my commute to work is down by the river and after about a weeks worth of heavy rain the river breached its banks leaving about a 3 foot deep lake over the path !
It would've been too far to turn round and go around so I lifted up my legs and rode through it without realising the controller was then under water !
I got halfway through and ... lol... Yep it cut out... Oh...sheeeeeet !
It dried out pretty rapidly but after about a week it kept cutting out and then I got the Error 10 (Controller b0rked) message and ceased to function entirely.
I bought a controller tester and it said it was buggered too.
So I dismantled it and water came out !
Doh!
I then bought another Controller but didn't pay attention to the output amps so it isn't quite as fast.... But that's about to be rectified as I've built a 72v (20s5P) battery and have just ordered
THIS