Started up the plane yesterday and forgot to turn on the fuel ( can be done on CT2K!) and the Brauniger panel showed 'Fuel Sender Fault' alarm. Immediately turned on the fuel valve before the engine stopped and continued on with pre-flight checks. However during the following flight the fuel flow per hour reading was stuck at 5 ltrs per hr when interrogated. This morning checked the sender unit (ok), the wiring connections(ok) and as a last resort did a factory reset on the Brauniger panel (set mode 39) which worked !
So, for those with the Brauniger panel my solution could be useful but do remember to record all your personal settings before committing to a reset.
Mac