Hi,

We finally got approval for the repairs. The controller was definitely damaged. The root of the problem was a shorted drive motor. The motor was sent out for repairs and brought back after the repairs.

After installation of the drive motor, the unit has no speed. It travels about 2 mph in forward and reverse without any error codes.
Now, the problem is that, if I remove the wiring from the Tach sensor and reverse it, the unit will speed up, but only travels 3 feet before it cuts out and codes 10, Speed encoder fault.
I have a handset, but not the specs.
I placed the wiring back on the tach, but it continues to creep without any codes. Are the tach wires polarity?
Is there any possible way I can obtain the setting for this controller. The controller is a MOS90D.
Any help will be appreciated.....