Controller 3200C / p500: After a short power interruption the controller does not start

What happens?
The controller does not start. This can be recognized by the LEDs immediately after switching on. All LEDs are off.
 
Example 3200C
 
When does the behaviour occur?
The behaviour occurs sporadically when the device is switched off and switched on again after a very short time (approx. 1s).
 
Which products are affected?
Controller 3200C
Panel Controller p500
 
Short-term measures:
The fault can be eliminated by interrupting the power supply for at least 30s.
 
Notice: 
No change is planned for this behaviour.

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