[solved] red showing "CF 33!" instead of saturation value in main display

[Solodiver]

Suddenly I see a red showing of "CF 33!" overwriting the value of tissue saturation in the main (not underwater/dive) display. The saturation is shown as 93% when switching the unit on but is overwritten after some seconds. The graphical saturation shows some N2 saturation, HE seems to be back to normal.

The box is running 1.72. What does this mean?

Update: Seems to depend of the setting of highe GF (CF 33), entering a value above 93% (currently shown) Throws this message, decreasing the value lets vanishing it. Seems I did not understand the GF fully. The GF high is now set back to 90, does this mean the warning comes up again in some time (when my saturation is going back to normal)? Why is this?

[Chilihead]

http://www.heinrichsweikamp.net/ostc/pm ... anual.CF33

[Solodiver]

Oh, that easy!? Thx Chili...