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The LED is flashing
Fault condition
2x
Speed control, UP/DOWN switch, plug-in contacts, or supply cable defective
3x
Error Circuit board (FET)
4x
Error Circuit board (relay)
5x
Error Motor
6x
Overload
7x
Overvoltage
8x
Error Electromagnetic brake
9x
Error Electronics
10x
Error Hollow shaft sensor (only when ComfortStep active)
Problem
Check and possible remedy
The s-max cannot be switched on
Is the charger connected?
Yes: Disconnect the charging cable.
Are the batteries empty?
Yes: Charge the batteries.
Does the problem persist?
Yes: Notify the manufacturer, the AAT field service, the authorised
specialist dealer.
The s-max does not move
Safety chip inserted?
Yes: Notify the manufacturer, the AAT field service, the authorised
specialist dealer.
Battery pack isn’t charging
Notify the manufacturer, the AAT field service, the authorised specialist
dealer.
The battery shows external damage
Notify the manufacturer, the AAT field service, the authorised specialist
dealer.
Troubleshooting
Fault conditions