A total of 4 short-circuit faults can be stored in the control unit.
I a short-circuit is detected in a lamp circuit, this lamp circuit is switched off after one minute. This lamp circuit remains switched off until there has been a terminal change (terminal 15 -> terminal R -> terminal 15).
A renewed attempt to switch on is only made after a terminal change.
If there have been a total of 50 terminal changes while there is a short-circuit in a lamp circuit, the corresponding control-unit output is switched off permanently by the control unit. This is the case if the fault entry can no longer be deleted despite subsequent repair of the short-circuit. With this fault, the control unit must be replaced.