"Mike" wrote in message ...

Probably getting to the point of needing replacing ...
All sorts of things ...
* Throttle not in neutral (i.e. the thing will drive off on its own)
Could be caused by a duff/erratic throttle pot. Or a wiring problem.

* Low battery voltage detected

* Electromechanical stop-brake won't come on/won't come off
(both have serious implications!)

* Motor fault (short/open).

* Internal fault in the H-bridge (MOSFETS) that do the driving/PWM
control.

* Chair-lift/lower sensor, if any, isn't indicating that the chair is
safely locked.

* Controller *thinks* that you are charging the unit -- it won't drive off
if you are charging!

You need the model number and manufacturer's name of the speed controller
block. They can be a PITA when they decide they don't want to play. The
blink codes aren't standard across every controller. Is it just a flashing
LED or is there a pattern of long-short flashes that are repeated?

Thanks, it turned out to be loose connections. I disconnected the
motors harness and find no resistance (* Motor fault (short/open.) I
found resistance from the motors but no resistance from the control unit.
Further investigation with a special wrench I found four loose
connections. Shown on this webspace.
http://religion.p5.org.uk/s/scooter.htm

The LEDs had no blinking pattern but actually had indicated a code.
The code is the number of LED(s). The battery seems to be ok (since
it shows 9-leds) after driving it around for 30 minutes straight.

Thanks.:~)