Hi guys! I am new on this forum and I desperately need some help. I have recently bought an MAN tgx 400 2008 tractor unit and everything was fine with it until today. I have switched the engine and tried to put the ventilation on and set up the temperature and it wouldn’t work. When I have pressed the windows ventilation button the whole unit switched off completely and I can’t make it work. I have tried the fuse but that’s fine. Has anyone had the same or similar issues? I would appreciate if anyone can give any advice.