thank you for your precious advice Gr5,.. the only things that were not checked are the bed cable and the mother board, the bed and the pt100 came from my UMO+, she printed about 3h00...these parts are new..I will check my motherboard as soon as possible..Mostly i've seen that the error came when you put on the UM, mine begin the print and sometimes it's ok, sometimes not..
i hope it is the cable..
thank u again.