PID problems
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For the hotend you have a known thermistor and the correct values from E3D, so it should be as accurate as you can expect.
As for the bed, at 24v it takes a long time to heat up and it does many cycles, so it can take quite a while. Rather than tuning to 90c, try a more reachable temp like 60.
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@phaedrux Hi, the problem was the thermistor in the bed. I swapped it out and now the temps are almost the same between the panel and the IR Gun. Now the gremlin has move to the extruder. I have a REVO Hermera direct drive and it keeps getting heater faults. I have ver 3.4.0 and ran M303 T0 S240 and it tunes fine. But I noticed the the temp rises above the print temperature I set and keeps going until there is a heater fault.
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@phaedrux Why is it saying Heater 0 when the fault happens on heater 1 the extruder? Not sure what is happening here!
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@blitzreg said in PID problems:
@phaedrux Why is it saying Heater 0 when the fault happens on heater 1 the extruder? Not sure what is happening here!
I think that is a bug in the displayed heater. Please update to 3.4.1 RC1
https://github.com/Duet3D/RepRapFirmware/releases/tag/3.4.1rc1
What did your tuned values result in?
If the part cooling fan doesn't have a big impact on the heater, you can tune the hotend as a normal heater with M303 H1 S240 and see if it behaves better.
