PP3 flashing red-green - what to do

My PP3 output LED flashing red-green indicating too high incoming voltage have occured. What is the right procedure to go on from here?

When my P3 does that after an out-of-spec voltage event, I just unplug it for 30 seconds and then plug it back in and restart.

Thank you for your input. I thought that there perhaps were a correct procedure similar to it’s not allowed to switch off the master power switch until the PP3 is set in idle by the front button.
Please excuse the bad english :grinning: