Jump to content

UM2 Bed Temperature reading higher than actual temperature


Recommended Posts

Posted · UM2 Bed Temperature reading higher than actual temperature

Hi All,

 

There are probably loads of topics covering this, so if you could link them that would be great.

 

OK, basically, the displayed temperature for the bed is reading higher than the actual temperature of the bed.

 

What could be the cause? and how can I fix it?

 

Cheers

  • Link to post
    Share on other sites

    Posted · UM2 Bed Temperature reading higher than actual temperature

    The cooling fan blows cold air onto the model and glass. In my tests this could give a local difference of up to 15°C on the glass plate for small models. This could be a major source of difference, as the sensor is at the bottom of the glass, not the top.

     

  • Link to post
    Share on other sites

    Posted · UM2 Bed Temperature reading higher than actual temperature

    Hi,

     

    thanks for the reply.

     

    the issue i'm getting is with the printer at idle with the bed lowered.

     

    the temperature is currently showing as 39degC when the temperature is 0degC. this can vary up to 60degC

     

    my room is definitely not 39degC 😅

     

    thanks,

    temp reading.jpg

  • Link to post
    Share on other sites

    Posted · UM2 Bed Temperature reading higher than actual temperature

    Is the printer still cooling down from before, or is it just always? It may take quite a long time to cool down, depending on the situation, the airflow, and the bed-temp of the previous print.

     

    Or could it be heat transfered from the electronics below, or a nearby heater, or sunlight? Behind a window in the sun, it can easily be 60°C, like in a car.

     

    I would say: in the morning, after being off for the night, measure the temp before switching it on. Then, without printing, measure again after half an hour or an hour. It should still be about room temp, maybe a little bit more. Shut off windows or other heat sources. I think that could give you an idea if the electronics are fried (short circuit or so).

     

  • Link to post
    Share on other sites

    Posted · UM2 Bed Temperature reading higher than actual temperature

    Hi,

     

    The temperature reads 39 as a baseline, even after a night of cooldown, the room temperature is stable, the printer is not next to a particularly strong heat source or draft.

     

    I've been searching through the forums and it seems this is not an uncommon issues, it seems the connections on the heated bed are usually the culprit.

     

    https://community.ultimaker.com/topic/3436-a-fix-for-ultimaker-2-heated-bed-not-working/page/2/

     

    i'll do a bit more investigation when the new multimeter arrives.

     

    thanks for your help.

  • Link to post
    Share on other sites

    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now
    • Our picks

      • Introducing Universal Cura Projects in the UltiMaker Cura 5.7 beta
        Strap in for the first Cura release of 2024! This 5.7 beta release brings new material profiles as well as cloud printing for Method series printers, and introduces a powerful new way of sharing print settings using printer-agnostic project files! Also, if you want to download the cute dinosaur card holder featured below, it was specially designed for this release and can be found on Thingiverse! 
          • Like
        • 10 replies
      • S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
        (Sorry, was out of office when this released)

        This update is for...
        All UltiMaker S series  
        New features
         
        Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
          • Like
        • 0 replies
    ×
    ×
    • Create New...