OK I understand how moving the collective would have and effect on the ITT in the 139 as it was well demonstrated in the SIM. The beep is certainly not very user friendly either once in manual.
The question though was about having an ITT of 950. Switching the Gov's to manual won't have any effect 'until' there is movement of the collective or in fact yaw inputs too I imagine.
I was saying that flipping the Gov's to manual won't do anything to ITT, however further control inputs from the pilot could and more than likely would then have an effect!