Heather bed cannot preheat(also temps from bed rising really slow)

What is the problem?

i get an error while preheating my bed(
Error: Heating failed, system stopped! Heater_ID: bed - echo:Heating Failed

What did you already try to solve it?

Rewired everything and bought a new motherboard and made sure the power supply was adequate

Have you tried running in safe mode?


Did running in safe mode solve the problem?


attention! Important

PS: i don't got the SD card problem because i don't have a SD card slot

Velleman K8200 with ramps 1.4.2 motherboard

I also noticed when measuring the V during preheating that the V fluctuates between 1 and 4.65 V, should that be the case?(power supply seems to be working fine)

Hello @Julien_Burgaz !

When you opened this thread there was a querry for the Systeminfo Bundle

Could you please attach it to your next post.

Do you run the bed with the original 15V?

Hey Ewald thx for your reply

System info Bundle:
octoprint-systeminfo-20221113163429.zip (258.5 KB)

Iam a bit new so I just put the cables from the bed into the ports on the board so i don't know if it runs on 15v

Have you deleted the logs after that issue?
The octoprint.log is just a sequence of 17 milliseconds. with no information about your issue.

The K8200 is usually powered by a 15V power brick. Due to the weak heat bed performance, I modified my K8200 to run the bed on 24V.

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