HiLook to the picture please and can you say me whats happend?http://forums.avsim.com/user_files/20368.txt

Two (2) things...Either you have just turned on the battery and then started the APU.ORYou just shut down the APU.In both cases the 'Low Oil Pressure' indication is normal and should not alarm you. It appears during the start-up circle of the APU and will go away as soon as the startup circle is completed.Same stands for shutdown of the APU.To confirm that no failure exists, reset the Master Caution and Recall.If you still get an 'APU' warning then there is a failure in the APU.George DorkofikisAthens, Greece

Hi Georgethx for your replyThe problem still exist. I done your infos, but the problem exist.