Prusa-firmware: 3.0.11 Selftest fails on the Hotend Thermistor

[SkyDriver2k4]

Hi,
the Selftest fails on the Thermistor. But it's working fine. Another one confirmed that he get the same error.

[robrps]

I'm also seeing this, if I ignore it, everything prints OK, but the selftest can't continue past the failed hotend test.

[PavelSindler]

Hello, thank you for reporting this. I will take a look at it.

[PavelSindler]

Can you please provide the message which is printed on LCD when selftest fails?

[SkyDriver2k4]

sure.
Selftest error !
Please check:
Heater/Thermistor
Not connected
Selftest failed.

[PavelSindler]

And can you check nozzle temperature displayed on LCD before and after failed selftest?

[SkyDriver2k4]

33°C Start
After the test 52-53°C

[robrps]

Says the same for mine - video of it happening if that helps at all?
https://www.dropbox.com/s/4kq0a62lbmrmipg/2017-06-02%2017.10.17.mp4?dl=0

[PavelSindler]

Thank you guys for great feedback. This issue was caused by limits which were set to strictly for quite limited time when nozzle was heated. I tested this on many printers here, and all passed, but in some cases it was very close to fail and if I compare it with @SkyDriver2k4 temperatures after calibration I can see, that this was the cause. So I just prolonged selftest heating time for nozzle and also for heatbed little bit. This will be fixed soon in 3.0.12 release. I will update info here as soon as commit will be merged here.

[robrps]

3.0.12-RC2 has fixed the issue for me - thanks.

[ManuGithubSteam]

@SkyDriver2k4 Please close the issue and update to 3.0.12

[d777]

I am getting this issue with 3.1.0

[Xsiliconkid]

Where do i find the updated Firmware version 3.012-RC2?

[jl1990]

It happened to me on 3.1.1

[nielssteenvoorde]

Did have this issue with the new firmware 3.4.1-1356 doing the calibration test now running the wizard...now what.

[mptrs]

Looks like the issue is back in V3.7.1. After downgrading to V3.7.0 there was no error and everything is working fine.

[chriskpalmer]

One of my twelve i3 Mk3 machines had this issue with V3.7.1 and following mptrs I rolled back to V3.7.0 and everything works fine. I found this after replacing the hotend thermistor :(

[mptrs]

Looks like it's still there in 3.8.0. Will do a double check if it really is connected.