Problem configuring my hotend thermistor October 28, 2013 04:45PM |
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Re: Problem configuring my hotend thermistor February 02, 2018 03:02AM |
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This was exactly the problem I was having, shorted against the block!Quote
uncle_bob
If your thermistor reads 13.5 ohms at room temperature, either it's very much the wrong part or your wires are shorted. Try:
1) Measure a known good resistor with your ohm meter to check it. Best to try something in the 50K to 200K range.
2) If your wires are cable tied down, undo the cable ties. Remeasure the thermistor.
3) If it still reads low, pull it out of the hot end and check it. It may be shorted to the hot end itself. If removal is impossible, check the resistance from each of the thermistor leads to the hot end tip. It should read open circuit.
Only when you have a thermistor that reads 100K at room should you proceed with anything else. You will damage things if you try to run with a bad / shorted thermistor.