Please contact our supplier filling

Please contact our supplier filling machine, the problem is not work and show message in attached picture.This machine we sent to supplier at Germany to fixed and get back this month it's can work only short time then happen again, however, we tried to clean from their advise before but still not work.We have two filling machine can not work with the same problem right now.Please ask for their suggestions for solving this problem

Please contact our supplier filling machine the problem, is not work and show message in attached picture.This machine we sent to supplier at Germany to fixed and get back this month it 's can work only short time then happen. ,, again however we tried to clean from their advise before but still not work.We have two filling machine can not work with the same problem right now.Please ask for their suggestions for solving this problem.