Heater Fault

dc42

@dave-parry Ok Got it done. Installed 3.3 using bossa. Then tried to install 3.4.0beta 5 and just got the same problem. So I erased again with bossa and used YAT to install 3.4.0 Beta 5 and it worked. However I would like to know why it won't work through DWC as normal. If I have to do it with Bossa it means I have to take the heated bed off do the update, re-install and then recalibrate. IfI have to do that each time I want to update I will have to extend the erase pins so they are acessible.

You may have an old version of Duet2_SDiap32_WiFiEth.bin in the /firmware folder.

Dave Parry

This post is deleted!

T3P3Tony

Its fine you are on b5 now so we will see if you can upgrade properly when b6 comes out

Looking back through the thread I realised that you have not done a heater tune since the beginning of the issue so please run M303 again with the fans setup as you plan to have them. if you use M303 T method to do the tuning then it will take into account the part cooling fan if you have one.

Dave Parry

Will do Tony.
It is printing now, but the temp trace is all over the place.
I did do a heater tune this morning before I started, I used M303 H1 S240 followed by M500 but will use your method when the print finishes.

Dave Parry

@dave-parry Printer Temp.JPG
this is the temp graph

jay_s_uk

@dave-parry thats a lot of noise on your temperature graph.
What type of temperature sensor is it?

Dave Parry

@jay_s_uk Its one of E3D's

Thermistor Cartridge - E-SEMITEC-50-MOLEX-INC-CABLE
It has lessened a bit now for some reason

jay_s_uk

@dave-parry you shouldn't be noise like that on those thermistors which would indicate an issue with either the connections or the cabling

Dave Parry

@jay_s_uk
Just to let you know tony I did the heater tuning as you suggested and its now completely flat. (the blip at the end was where the print finished and switched off and I reset the temp for the next print.)
Thank you for your patience.

jay_s_uk

@dave-parry thats much better. I would still check the cabling as those severe spikes aren't normal. at least its working though

Dave Parry

Well I have the problem back again. When I start a print it drives down to wipe and start the print I get a heater fault error. It sometimes happens during a print too.
Have upgraded to release 3.4.0 beta 6 and that seems to have installed correctly, but still get the error.
I did do a heater tune but that was before the firmware update.

Dave Parry

@dave-parry It seems I have the latest version of Duet2_SDiap32_WiFiEth.bin (19-10-2021) so dont know what else to try.
Also if I reset the heater (but dont restart the print) it throws up the error again before it reaches the set temp.
I have also noticed that before the error comes up the temp reading goes all over the place far quicker than it can possibly do. But its not a bad connection.

jay_s_uk

@dave-parry I would be ordering a new thermistor or replacing the cable as one of them must be dodgy

Dave Parry

@jay_s_uk tried that before and it made no difference, but will try again to see.

Dave Parry

@dave-parry Nope just the same problem.

jay_s_uk

@dave-parry what did you change?

Dave Parry

@jay_s_uk Changed the sensor.
It was the same initially, but its behaving it self now.
When the print finishes will change the wiring connector. It's a 12 way molex. I have spares, so I will cut the wires and re-crimp them. see if that makes any difference. But moving the wires about didnt show any problems, but will change anyhow.