Extruder temperature reading 0 degrees Celcius on repetier.

I'm using RAMPS 1.4.
When I open repetier host, my heatbed temperature shows approximately 29 degrees Celsius, but my extruder temperature says that it's 0 degrees, which is not possible. I checked all my wiring and nothing seems to be wrong. So I'm guessing it's a problem with the firmware. If it is, can someone tell me what I'm doing wrong here? I'm using Marlin firmware
Thanks a lot, Mitch.


  • Enable logging in host (preferences->general) and restart host. Then connect and close host after a while and read the log (in repetier work directory). It contains the normally filtered M105 responses send from firmware. If they contain 0 it is a firmware/configuration issue. Maybe just a bad developer version.
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