My setup: modded ender 3 with duet wifi, switched to hemera now and can't heat the hotend properly. In response to M303 H1 250: "Auto tune cancelled because target temperature was not reached" after ~5 minutes, peak temp at roughly 115° C. The part cooling fan is off (needs rework anyway, the supplied model would blow straight at the nozzle). The connections at the terminals seem fine. I fixed the beta value of the thermistor to 4267 as written in the datasheet. I am not aware of other changes related to the heater cartridge. I think the fan is blowing quite loud and much, but afaik, firmware controls the fan during PID auto tuning. An issue I just remembered, found during assembly: the heater block slightly touches the motor at the edge. I could not avoid this while keeping the connection somewhat intact. The manual and various other builds I've seen photos of were inconsistent, so I used the online form last week, but got no response. Maybe it looked like a stupid question, but now the hotend is dangling around. Just to test, I ran the auto tune again, and it (slowly) got to 180° C within 5 minutes (after which the auto tune is aborted automatically). What am I supposed to to? Maybe it's just the heatbreak not breaking... I don't have a reliable tool to measure temperature.