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Hotend heating up non stop by itself
Posted: Tue Jul 16, 2019 5:07 pm
by Balrog602
My hotend heats up when I turn on the machine, it heats non stop to over 250C. By that time I have to unplug the extruder carriage plug to stop it from over heating.
I tried to upgrade firmware to 37.58 but did not solve the issue, please help, I can't print or use the printer in any way.
Re: Hotend heating up non stop by itself
Posted: Tue Jul 16, 2019 5:30 pm
by William
Hi, you can try to unplug the hot end cable from the motherboard to see the number. If the temperature still shows more than 250°, then the motherboard has a problem and needs to be replaced.
If the temperature shows a negative value and the motherboard is normal, you can measure the resistance of the hot end to determine if there is a problem with the hotbed.
Re: Hotend heating up non stop by itself
Posted: Tue Jul 16, 2019 6:02 pm
by Balrog602
Hi William,
When I unplug the cable it shows 0 C/0 C, when i plug in the cable, the LCD shows the correct temperature, but hotend will start heating for no reason.
I think I will replace the motherboard.