Static Return to Off, basically incorrect sequencing of controls/startup. On the Wave, this normally means trying to operate without standing on the footpedals, having the gates open on a machine that is set to require them closed for operation, having hands on the controls when keying on or the Base/Platform switch on the service pod is set to Base. If you are doing everything in the correct sequence, you need to check footswitches, throttle/steer pots and hand sensors.