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speedaemon
(@speedaemon)
Active Member
Bed Preheat error

(EDIT: This is a MK2S.)

I'm getting a PREHEAT error that looks to have something to with the wiring to the bed. All the connections in the Rambo box are solidly connected. The issue can best be seen where the wires connect to the bed itself. With the correct pressure, the red light comes on and the bed starts to heat up (and the LCD screen shows the heat increase). In the wrong position, the red light goes off and the heating stops.

In the video below you'll see that it looks like the issue is with the 2 bigger red/black wires (or their connection to the bed). By wiggling them a bit I can make the light go on or off. If I just wiggle the smaller black wire that goes underneath the bed nothing happens.

Video...
https://photos.google.com/share/AF1QipPkMPJHlRAhWAhnT-tigl6T9NdOXNqYlhi4avtR1WP2RWiCQGav9vNlA70SAqdmmw?key=alp5dFBiWXpKZWx2NmJPa3Rtd3VlTWNoVHh1LXhn

Any ideas?

-Sarkis-

Posted : 19/03/2018 12:24 am
JoanTabb
(@joantabb)
Veteran Member Moderator
Re: Bed Preheat error

Hi Sarkis,
have a look at this thread
https://shop.prusa3d.com/forum/prusa-i3-kit-building-calibrating-first-print-main-f6/prusa-support-echat-excellent-t14421.html#p67843

I know it's actually a mk2, but the issue is the same on a mk2

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

Posted : 19/03/2018 12:37 am
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