Please note: the forum is closed.
No new user registrations are accepted. For more info, please click here.
No new user registrations are accepted. For more info, please click here.
Scorpion hot end air duct causing heating failer and thermal runaway issues.
ishtob
Posts: 13Member
Just printed this duct 2 days ago and started to use it. Unfortunately a few seconds after getting to the layer where the cooling fan is set to turn on, the machine beeps and forces a restart with either "Heating fialure" or "Thermal runaway".
I know that marlin returns "Thermal runaway" for 2 reasons: catastrophic heating or if the heating element is at 100% for extended period and unable to reach target temp.
Looked back through the log in octoprint, looks like the cooling fan reduces the nozzle temperature by 15-20 degrees, and the heater was unable to get the temperature back up fast enough before that error kicked in.
Checking out the duct position, looks like the duct is pointing directly at the nozzle, could it be that the fan is cooling down the nozzle down faster than the heater can heat? any good way to solve this?
Post edited by ishtob on
Comments
EDIT: I had a similar duct when I encountered the issues. I'm now using this duct: https://www.thingiverse.com/thing:2994118
In addition I have a front mounted fan and duct - so it total 4 direction cooling - and I have no problems at all
My ducts point at the very tip of the nozzle in a downwards direction
You could fit a silicone boot or whatever they are called over the hot end to get extra efficiency and keep any blown air off the hot end
Howdy, Stranger!
RegisterIt looks like you've been lurking for a while.
If you register, we will remember what you have read and notify you about new comments. You will also be able to participate in discussions.
So if you'd like to get involved, register for an account, it'll only take you a minute!