Chamber heater is not turning on during print, and CHAMBER_HEATER_ON macro

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Solution:
Got it working now. My question is whether it's a must to have a temperature sensor for the chamber heater itself?
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17 Replies
Helge Keck
Helge Keck20h ago
can you show the temperautre panel from your frontend please
QUINX
QUINXOP20h ago
Got it sorted. Didn't know that it requires 2 temperature sensors, 1 for heater, and 1 for chamber. Was running a setup with single chamber temp sensor only. Hence, the max temp for the heater was set to 72C. Then changed it to 2 sensors, but did not change the heater max temp. back to 200C, hence the error turning on the heater. Is the temp sensor for chamber heater for safety purpose?
Helge Keck
Helge Keck20h ago
your chamber thermistor already shows 50°, in this case the chamber heater doesnt get turned on if you jsut set it to lets say45° please make this CHAMBER_HEATER_ON CHAMBER_TEMP=60
Solution
QUINX
QUINX20h ago
Got it working now. My question is whether it's a must to have a temperature sensor for the chamber heater itself?
Helge Keck
Helge Keck20h ago
yes for safety reasons otherwise klipper cant react to thermal issues and yu couldnt contro the actual heater temperature
QUINX
QUINXOP20h ago
Right.... Makes sense. Thank you very much for your help and clarification! Greatly appreciated! Where should the heater sensor be located at?
Helge Keck
Helge Keck20h ago
directly at the heater rips
QUINX
QUINXOP20h ago
1 more question. Why is the heater set to 85C after the chamber temp has reached?
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QUINX
QUINXOP20h ago
Has this got to do with variable_chamber_heater_heating_temp_offset: 25 ? And what is the purpose?
QUINX
QUINXOP20h ago
Saw that, just wondering what is the purpose of it.
Helge Keck
Helge Keck20h ago
depending on your printer size and used heter and the position of it, you can control with the offset the temperature it uses to try to hold the target chamber temp this helps to get a constant temperature
QUINX
QUINXOP20h ago
Yes, that's what I'm wondering. For VC500, it's not possible to maintain higher temp with the offset.
Helge Keck
Helge Keck20h ago
what temp you want on the 500 i could easily reach 60° on my 500
QUINX
QUINXOP19h ago
Another question, is it possible to heat the bed before chamber heater? Trying to reduce the total power draw at 1 time Bed and chamber heater turning on at the same time has very power draw. For safety reason too. Looking at 70C
Helge Keck
Helge Keck19h ago
well, hen you probably need a better insulation or a bigger heater you can use this macro hook to turn the bed on and wait for the temp before the chamber heater turns on
QUINX
QUINXOP19h ago
Awesome! Thank you so muchhh
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