constant yellow GHL logo puzzel

Hi, not sure where to post this, but noticed today constant yellow GHL logo on Kh director, powerbar 6e & 2 slave dosers, but not Maxi doser or Profilux 4. Everything appears to be running ok unless I’ve missed something. Support blink codes https://www.aquariumcomputer.com/sup...-e411fbea-c9e7 suggests “Memory has been reset – please reactivate control by confirming on the device” But my question is :
1. which device ?
2. And how do I confirm on these Devices?
3. I have tried power cycling each device already

1. The master device
2. Connect via USB or press the arrow keys on the main device if it is a P4. You will be asked if you want to enable control, press YES.

Sorry Vinny not quite with you. I understand it’s a setting in P4 (I think) but where do I go (in the menu structure) if pressing the arrow keys. or When I connect laptop via USB to control centre where in the program from there?

Have you set the GHL logo illumination mode to 'Standard w/o blinking'?
In this case the constant yellow LED indicates a warning of the filling level of one of the dosing pumps.

Thank you Thilo that was it, just couldn't see the wood for trees!