Klipper reports SHUTDOWN : verify_heater. ##Urgent##
This error is driving me nuts. I have 4-5 models , printed to 10-20%
I have a 6-7 day print that I need urgent.
After 12-36 Hours this error appears.
*
"Klipper reports: SHUTDOWN
Heater extruder not heating at expected rate
See the 'verify_heater' section in docs/Config_Reference.md* "
Spec:
V-core 3
Octopus pro board
Phaetus Rapido HCT
Klipper updated
Sliced on OrcaPrint
I can see from the log that:
The first hours the extruder target and temp are all good. Then after a number of hours, the extruder is not reacting to the applied PWM signal. First by a few degrees, then finally 20-30 degrees, and failure.
(Log attached)
I have three likely culprits:
- Driver on Octopus pro
- Cable to heater
- Heater
Does anyone have experience ???
Ideas ??
Thank you ! This model is going on show early May
Tor
6 Replies
Did you already try an PID tune?
If PID done and setting for the sensor correct, most likely loose wire or sensor failing.
PID is done, a couple of times.. just in case.
I am seeing no sharp changes in temperature. A loose cable would likely give spikes of temp-0-temp.
Failing sensors can be, however the temp drop occurs after muliple hours, never after just 10-12 hours.
From the logs, there is a temp swing in the first hours of a "normal" 10C or so... Suddely there is a much greater swing..
I have placed a logging device on the heater element cable. Hopefully I can get some data on that to see if there is a mismatch betewen applied power and actual power... But as its a PWM very active element.. my hopes are modest
Update:
I am following the log step by step... (I know.. life required)
I am seeing
temp=239.2
temp=231.4
temp=238
So ... I am doing as suggested... tracing for loose connectons
an 8 degree swing back to back does suggest a wiring issue. Good luck!
..... The conector between the thermistor and the cable running from the hot-end-assy, to the control board.. was in a unfortunate postion..in addition..the connecton was .. Not the best...
Now after 2d 16h :
extruder: temp=240.2
extruder: temp=240.5
extruder: temp=240.4
extruder: temp=240.2
extruder: temp=240.1
extruder: temp=239.9
extruder: temp=239.8
extruder: temp=239.8
I thank you for helping me !
Hooray! 🎉