we are facing the problem in Siemens SGT-800 gas fuel system that main gas valve and pilot valve are giving deviation between set point and feedback. Right now pilot valve have 10% set point and feedback is 50%. Main valve set point is 18% feed back 36%. my Question is why Governor not controlling the both valve according set point?

what is the solution?

 

Hi
Have you received answer on your question? I am also having similar issue.
What kind of fuel valves do you have?