Thermal Runaway, Instant heating up

Post Reply
hun46y3
Posts: 3
Joined: Thu Apr 22, 2021 10:10 pm

Thermal Runaway, Instant heating up

Post by hun46y3 » Thu Jan 20, 2022 12:59 am

Hey there!

After a nozzle change (nothing else changed on my printer) this started:
As soon as I turn the printer on, the hotend starts to heat up, and it just goes higher and higher until I turn the printer off.
The temperature reading on the display also increases, so it's not a thermistor issue.

Maybe a mosfet burend out, or something, and it just constantly supplies voltage to the heating cartridge?
Do you guys have any idea what to check, what to do?

Thanks in advance!

Post Reply