stuartwood

Hi I had a similar problem and solved it like this..... http://umforum.ultimaker.com/index.php?/topic/4168-um2-printhead-clogged/&do=findComment&comment=34173 Good luck

I have Fixed the problem. Following the hint from gr5 i removed the build plate after checking the connections to the controller card and re tightened the screws holding the 4 cables to the block under the build plate. It all seems to be working correctly now. Many thanks for the help.

Help My beloved UM2 has developed a Temp Sensor Bed Stop Error, just when I need to print some parts for a job. I am going to check for loose connections, but any other ideas ? Thanks Stuart Wood

It worked, everything is as normal again ! Thanks for your responses, the moral support is appreciated. I'm sure the problem was as identified by Illuminarti in that the part became loose and got mashed into the head. Thanks for your help.

Dear all. Before I read your posts I had thought to myself......"Heat it up, see what happens....can't get any worse !" I plugged the heater power and temp sensor into the mainboard, swiched on...without issue, set the hot end to heat up to 220, then 230, then 240 degrees, and as you can see from the photos I have got the vast majority of the PLA off....phew. And yes the fan shroud pan did fill up with plastic. Now for re-assembly.....wish me luck. I'll let you know how i get on. Thanks guys

Hi Last night, during an overnight print my UM2 seemed to get material caught up in the head assembly which it then proceeded to fill the print head enclosre with black PLA. I have stripped the print head unit down as far as i am able to but need to get some advise on how to remove the large PLA Blob, which has moulded itself to the hotend and cables. Any ideas would be greatly appreciated