My bigbox Hybrid dual has been working correctly for some time. Then i decided to move it to another room. After that I've been getting ERR MINTEMP each time I powered it up. I checked all temperature sensors connections as well as checking their resistance near Rumba board (to exclude possibility of broken cables all the way down to Rumba board) and everything appeared to be correct. After disconnecting one PT100 from the amplifier I got another set of strange problems as one hotend temperature was read as 250 C and bed temperature about 104 C (and it wasn't heated up of course). The second hotend displayed correct temperature. So, what should I do next?