Kaeser error code 0898 D

Hi, Sorry I can't find anything about that error code. Does it give any more details? The only things that comes to mind is that many compressor control systems monitor the state (open/closed) of the main contactors (the motor Y-D start relays). They all have an auxiliary contact that is used for feedback to the control system that the contactor is open or closed. I have receently answered a question about that, you can find it here: http://www.air-compressor-guide.com/questions/main-contactor-problems-on-Ingersoll-Rand-XF50-compressor Maybe you have the same problem, but I'm guessing here. If anyone reading this knows more about code 0898 D , please let me know and I will update this answer! Thanks!