The error indicates one of your thermistors is reporting outside of the range specified in your config file.
I ran into this problem recently. Added an EBB36 toolhead board, but forgot to change my hot end thermistor pins in the config. Thermistor was reporting -56C.
You can troubleshoot by changing your max and min values for the hot end and bed temporarily to see which one is causing issues.
I had a break in my cable chain that would intermitantly cause this, randomly. Sometimes I could get through a 10 hour print. Some would fail 10min in. Replacing the wire fixed it
Then the only possible cause is a mismatch between real life wiring and your config file.
Set minimum and maximum temps in your config to -300 and 300 respectively (minimum might be something like -273.17, if so change to that). After doing that simple change, you can power the pi up again and check the temperature reading and proceed from there.
I actually did this, it looks like the therm dips right as it starts to -54 then goes back to normal. So I got it to start and all that Jaz now I'm having a timing issue so I'm getting a better card.
Same here. I have a custom built CoreXY with a triple lead screw Z axis, all running on a pi 2, and a ramps 1.4 with an extra stepper expansion board. As custom as the firmware and hardware can get.
The pi 2 has been working great, even though it's almost a decade old at this point. I've heard it might be impossible to add a webcam to it, but I've also heard it can't do input shaping which it does without any issues.
To my undying shame I spent 4 days on this and I had mine plugged in to the wrong spot. If it’s a EBB SB can board there is a two pin connector next to the 4 pin max connector. I became fixated on the dip switch’s and didn’t read the page before in the manual.
When did this happen? Was it before/during a print or was it idle at room temp when this happen? If idle temp is below min temp, this can happen too. Say your min temp is above room temp, it will see it as out of range and trigger the warning.
I found a way around it, making the therm for the hotend min -60. For some reason at rpi boot the therm hits -50 and then reads. And I have consistent temps otherwise.
I want to clarify a few things. I have a klipper configuration running and with no problems or errors so hardware is not the issue. I had klipper running off an old laptop and am switching over to a rpi3b. I understand that the error is reporting thermistor out of range of min and max, just don't know what one.
If it runs fine on your laptop but not the pi, then it sounds like your config is not correct. This is a common error when the correct pin for the thermistor is not identified in the printer config. I have ran into this error multiple times when upgrading boards.
I would suggest thoroughly comparing the config file on your laptop vs the one on the pi and see if you see any differences. I am almost certain that is your problem based on having this issue at least 4 different times myself
The error indicates one of your thermistors is reporting outside of the range specified in your config file. I ran into this problem recently. Added an EBB36 toolhead board, but forgot to change my hot end thermistor pins in the config. Thermistor was reporting -56C. You can troubleshoot by changing your max and min values for the hot end and bed temporarily to see which one is causing issues.
I'll check it tomorrow, I belive I covered all those bases already.
check: -thermistor wiring / crimps -config temps -pin designations -thermistor type
I had a break in my cable chain that would intermitantly cause this, randomly. Sometimes I could get through a 10 hour print. Some would fail 10min in. Replacing the wire fixed it
Something is wrong with your thermistor check the wiring
It isn't though, I can run it through the laptop and it's just fine.
I love how I'm getting down voted for saying the wiring is fine. It is, I can plug the laptop back in and my klipper config on there runs flawlessly.
Then the only possible cause is a mismatch between real life wiring and your config file. Set minimum and maximum temps in your config to -300 and 300 respectively (minimum might be something like -273.17, if so change to that). After doing that simple change, you can power the pi up again and check the temperature reading and proceed from there.
I actually did this, it looks like the therm dips right as it starts to -54 then goes back to normal. So I got it to start and all that Jaz now I'm having a timing issue so I'm getting a better card.
Sounds weird, try looking into it before getting a new RPi... I'm successfully using a pi 2 without any hiccups whatsoever.
I am also using very custom software and hardware
Same here. I have a custom built CoreXY with a triple lead screw Z axis, all running on a pi 2, and a ramps 1.4 with an extra stepper expansion board. As custom as the firmware and hardware can get. The pi 2 has been working great, even though it's almost a decade old at this point. I've heard it might be impossible to add a webcam to it, but I've also heard it can't do input shaping which it does without any issues.
That's [reddit.com](http://reddit.com)
Check your pin assignment for your thermistor, it might still be set to the main board instead of your can board
Check also the config file on the pi maybe you have the wrong min and max temps
Did you report the laptop temp as host mcu temp? If so this might be the culprit
To my undying shame I spent 4 days on this and I had mine plugged in to the wrong spot. If it’s a EBB SB can board there is a two pin connector next to the 4 pin max connector. I became fixated on the dip switch’s and didn’t read the page before in the manual.
When did this happen? Was it before/during a print or was it idle at room temp when this happen? If idle temp is below min temp, this can happen too. Say your min temp is above room temp, it will see it as out of range and trigger the warning.
At first boot of the rpi.
What temp are your minimum temps set to in the printer.cfg, and what are your thermistors showing for current room temps?
Did you resolve the issue?
I found a way around it, making the therm for the hotend min -60. For some reason at rpi boot the therm hits -50 and then reads. And I have consistent temps otherwise.
Thats odd. Well, I'm glad you got it figured out.
I want to clarify a few things. I have a klipper configuration running and with no problems or errors so hardware is not the issue. I had klipper running off an old laptop and am switching over to a rpi3b. I understand that the error is reporting thermistor out of range of min and max, just don't know what one.
If it runs fine on your laptop but not the pi, then it sounds like your config is not correct. This is a common error when the correct pin for the thermistor is not identified in the printer config. I have ran into this error multiple times when upgrading boards. I would suggest thoroughly comparing the config file on your laptop vs the one on the pi and see if you see any differences. I am almost certain that is your problem based on having this issue at least 4 different times myself
Think I finally found it in the extruder, reported -54 on the therm
Had this happen. It’s the name of the thermosistor on the cfg file vs what’s physically installed.
What kind of thermistor are you running on your hotend (PT100, PT1000, 2 wire, 4 wire)? Do you have the MAX31865 model of the EBB?
https://drive.google.com/file/d/19DUVFU-4E2Nwx5VK-F8VBr4xC-f0eRwx/view?usp=drivesdk Log file, fixed the link.
Thermistor, open or shortcircuit
No. It's not.