Code 22, SRO, static return to off.

Possible causes:
Handle being moved to operating position after throttle is rotated or jog switched are pressed.

Bad motor controller: Check for B+ voltage, key on and battery connected, at PMC10 and PMC11.

Directional switches SW3 or SW4 bad or shorted.

Bad wiring between motor controller and handle assembly.

Bad jog switches.

Bad coast module.

Good luck!