Ok, thank you - so now I know that 9 is ok !

15 = Stellmotor für die Temperaturregelklappe steht falsh
Also the Channel 8 = Ist-Wert des Ruckkoppelpotentiometer am stell motor für die Temperaturregelklappe
and Channel 9 = Soll-Wert des Ruckkoppelpotentiometer am stell motor für die Temperaturregelklappe
are way apart they're supposed to be less than 3 units apart and they are like 100 or more

Rgs.
Kenn Roland