Geeetech

hi, if i try to print, the nozzle overheat for many minutes. for example i say 190 grad and the printer heats up to 230 and after many minutes (10 or so) the temperature cools down and the printer starts. The bed temperature is ok dont overheat. What can i do that the printer dont overheat ?

Thanks for your answer (sorry for my bad english i am german)

Hi,I wanna know how do you set the temp to control the printer,LCD panel or Repetier?

I have test both, with repetier i said 218 for example and the printer overheats 235 and after 10 minutes or so the temp goes down an the printer begin, what can i do to resolve the problem ? Or what can i test ?

vogty wrote:I have test both, with repetier i said 218 for example and the printer overheats 235 and after 10 minutes or so the temp goes down an the printer begin, what can i do to resolve the problem ? Or what can i test ?

Hi, I want to know where do you know the temp of 235°,from LCD panel?Have you measured the actual temperature of the nozzle with a thermometer?I think thermistor of extruder may be broken.

yes the panel said the temperature. the temperature is really to hot. the pla melt to much. when the temp goes down the printer prints good and hold the correct temperature.