Aquabot Turbo T2 moves then stops

by Steve
(NJ)

I have a Turbo T2 which moves slightly and then stops. The pump comes on and I've replaced the belts and the rollers but that didn't seem to do the trick. I took apart the side place and ran the unit out of the water and the pump comes on the the drive motor spins for a few seconds and then stops. I am manually turn the drive motor and it doesn't seem to be binding as it moves freely. Any idea's, could this be the timer in the power supply unit. When the bot stops after a few seconds of running the italic "i" flashes on the power supply unit.