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RonBreukers

BUGS in firmware 5.2.8??

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Posted · BUGS in firmware 5.2.8??

I own an Ultimaker 3 printer and I was VERY happy with it until I updated the firmware to version 5.2.8.

Since then, the indicated temperature of the build plate jumps immediately from 20 degrees to 60 degrees, and - of course, the build plate does not heat up anymore.

I tried a factory reset. An additional problem popped up. I can no longer connect to my WIFI network.

After the reset I tried to set the build plate temperature manually, and that worked!

Now I tried to print something via the USB (remember no WIFI..) and again the build plate did not heat up and the system started immediately to heat the print cores.

I went to the manual build plate setting and the temperature indicated 60 degrees.

PLEASE does anyone know how to get back to a previous firmware? Remember no WIFI and -as far as I understood- in SW 5.2.8 no update via USB.

PLEASE HELP

Ron

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Posted · BUGS in firmware 5.2.8??

As a follow-up to my previous post.

I got the WIFI working again by "CURA Connect reset". After that I could setup the network again.

I tried to set the build plate temperature manually. The indicated temperatures were very erratic. Within 5 seconds it went from 25 to 60 degrees. The build plate just luke warm. After a short while, the indicated temperature dropped to 37 degrees and started to gradually climb as the heat plate warmed up. The plate stabilised at 60 degrees, and at the touch it could be the correct temperature.

Now I tried to print. The brim came loose at 3 of the 4 sides as the build plate cooled off.

Next try was to print with the build plate setting at 68 degrees. Result: "Max temp error on the build plate. Go to ultimaker.com/ER14" No way to get out of this error. Switch off and on again just comes back to this screen. The temperature of the plate is no more than 25 degrees by the way.

I waited 10 minutes and switched on again. The screen shows "Print failed. remove the print...." and indicates a build pate temperature of 105 degrees and falling.

Something amiss with the firmware or (just at the same time as the firmware update) something wrong with the build plate temperature sensor???

Firmware installed:5.2.8 20190320. Hardware type ID: 9066

 

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Posted · BUGS in firmware 5.2.8??

Another test result.

I dismounted the build plate and measured the temperature sensor PT100. The resistance was exactly correct, so no problems there. All wires wire fixed, no loose connections or anything.

After re-mounting I set the build plate temperature manually. It indicated an actual temperature of 23 degrees, which was correct. I set it to 60 degrees and allowed the build plate to heat up. I measured the temperature with an infrared thermometer and it varied between 57 and 53 degrees, but it was still creeping higher.

My conclusion: No hardware problem at all.

Now I tried to print, and the old problem re-occurred. After a short while, the "Max Temp error" on the build plate happened again.

So everything points to a firmware bug, occurring when you try to print. I do not understand why you can set manually the temperature correctly, but as soon as it comes from a print command thing go awry.

Again, does anyone have an idea how to get back the old firmware???

Ron

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Posted · BUGS in firmware 5.2.8??

It sounds like a coincidence for the buildplate temperature sensor having problems, especially the ER14 is an indication for a bad electronic connection. Check for a loose wire near the glass plate, loose connector on the other cable end, or a broken wire inside the cable.

 

An extra check you can do is to go to the 'temperature' web page on your printer. For example:

http://10.183.0.164/info/temperature.html

Here you see a real time graph of all temperature sensors. Do these values make sense? A broken wire will be reported as a temperature of 700C. Just try fiddling with the bed cable and see if readings change here.

 

Downgrading from 5.2.8 is a bit difficult because of the changes to the file system you will have to do the recovery procedure which involves preparing an SD-card and opening the bottom cover of your printer: https://community.ultimaker.com/topic/20024-recovering-a-bricked-um3/

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Posted · BUGS in firmware 5.2.8??

Hi CarloK,

 

You were SO right!! It WAS just a coincidence!!

When I took the build plate apart before, I just measured the temperature sensor. However when I now wiggled the cable at the rear of the build plate the temperature indication jumped all over the place.

It turned out to be a bad crimp on the connector of one of the sensor wires. I re-crimped them both and let some solder wick in the crimp connector from the end. Now the temperature is stable.

So _ NOTHING TO DO WITH THE SOFTWARE UPGRADE. It was just a coincidence that it happened at exactly the same time.

Again thanks for the tips.

Ron

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Posted · BUGS in firmware 5.2.8??

Glad to hear my tips helped you find the problem.

Kind regards, Carlo

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