KRUPS XP7220 error 06 problem

Hi i thought maybe you can help me. Thanks in advance :)

You see i have a krups xp7220 i took it from a friend of mine. Its like new i saw inside information only 10 cups were made.

So my problem is that its not making coffee the first time when i took it it made 1 cup of coffee then stopped and gave me an error code of 06. I like playing around withe machines so i opened it from up i cleaned inside there is a hole i cleaned that too i noticed that when i turn on the power its doing a test mode and it stops during the test mode giving me that error 06. So what i noticed is that i think that its not pumping in water.But when its turning on its taking some water from the water tank because i see it.I noticed also that when th er is no water and i refel water its turing on normally but when its trying to make coffee its grinding its taking inside but its not giving water at the end because when i see the rubbish of the coffee its not wet. i put it one bu luck in cleaning mode and ther was water coming or i dont know maybe the air pressure was working. Also you can put a water filter in the tank but i dont have one. Is it possible to be from the filter? Because in the manual its not saying that you sould have the filter on always.

my email is goraslan@hotmail.com

please give me an idea what to do i cant find a technician to fix it