CrazyAce 0 Posted October 31, 2016 in Original + Errr: MAXTEMP BED 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 Share this post Link to post Share on other sites
gr5 898 Posted October 31, 2016 in Original + Errr: MAXTEMP BED It's the temp sensor cable - not the heater cable. Disconnect this cable from the board underneath and measure the resistance. It should be a steady 108 ohms or so (depending on temperature). 300 degrees is over 200 ohms I think so if the resistance is fluctuating between 100 ohms and 200 ohms that is the problem. Try jiggling the wire where it meets the heated bed. it could be the wire isn't screwed into the bed properly. Share this post Link to post Share on other sites
