Hello,
I bought the printer (K8400) 3 days ago and it’s my first one, obviously I’m having some trouble 
After 2 days of assembly, I had a lot of difficulties trying to aline the axes in a way that does not produce the loud ‘BRRRR’-noise. I got this (mostly) sorted out right now.
The next step is loading the filament, here I’m having a problem with the heating. The temperature on the lcd rises to about 170 at a pretty steady rate, after that it sometimes increases to 175 and drops back down to 170, rises again, drops again…
I waited 10-15 minutes and then decided to unplug the machine to avoid damage to the printhead (in case the fault lies with the temperature sensor).
Does anyone have any advice/help for me?
Kind regards