CrazyAce

Hey guys. Im new to the Ultimaker community and got my first 3D Printer. I just finish my assembly of the original + and from the beginning go a error. " Err: MAXTEMP BED." I read the forum and i tried the cable from the heated bed connection and same thing. Also on the Ultimaker Controller the BIG "H" is fluctuation the temperature.( from 300 too 500 degrees Any help will be appreciated. thanks