Thermistor Problem?
Last night I started a print and this morning I had a huge glob of plastic on and around the bottom of the hot end (I had already removed a large chunk of it before I took the attached picture). I was able to remove most of it but when I did a self test it failed with a message that says "Heater/Thermistor Not Connected". When I disconnected the thermistor in the Rambo and measured across the connector terminals it reads about 115k ohms, although it was difficult to get a steady reading (could have been a problem with my test leads). When I set the hot end temp to 40 it does get hot, but the display says it's 17 degrees. So I'm looking for some guidance on how to proceed. What should I do?
Thanks,
Rich
Re: Thermistor Problem?
I was actually measuring the resistance of the bed thermistor, not the hot end thermistor. The hot end thermistor is indeed open. The hot end got pretty nasty with PLA so I am planning to replace the entire hot end.
Rich
Re: Thermistor Problem?
Hi Richard. Replacing the whole hotend is a bit extravagant. The heatblock heater thermistor ptfe and sock plus nozzle would be less expensive and do the job
Regards
Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK