UMO+ shuts down when preheating PLA1

[Pablo28 0]

Hi all,

I'm currently finishing the set-up of my UMO+. Before loading the filament you have to heat up the nozzle by selecting PLA1 in the preheat menu. When I select this the Ulticontroller switches off and immediately starts up again but doesn't heat up. I checked the wiring for mistakes or bad connections, but couldn't find anything wrong. Does anyone have an idea what's going wrong?

Thx in advance,

Jasper

[Pablo28 0]

Is it a good idea to connect the heater with the heater bed? I know the bed works, so I guess if the heater is the problem it should not work (although brand new).

Thx

Jasper

[neotko 1,417]

No not a good idea. Does it reboot when you heat the hotend or the bed? Or only when both? Try to go prepare/temperature and heat bed first, then heat hotend. If it reboots do it in reverse. And check if restarts when heating bed or hotend or when both.

[Pablo28 0]

Thanks for your reply. If I heat the bed first I can heat the hotend. If I start with the hotend the ultimaker reboots and doesn't heat up. Does this mean that you always have to heat up the bed first?

[neotko 1,417]

No. that's really weird and I would make photos of all the heater/bed connections (since you already check them), then I would measure the Ohm of each heater and with all that info I would contact my reseller and ask them for a solution just in case is the hotend/bed heaters or the power supply.

That behavior on a umo+ (unless you did any weird mod and for what you say you are using all the kit parts only) isn't normal.