Helo, I've build a 3D printer, usualy it works fine but sometimes it just decouples the hot end heater.
Firmware i'm using is Repetier and the error log displays this:
11:43:08.703 : Error:One heater seems decoupled from thermistor - disabling all for safety!
11:43:08.711 : Error:Temp. raised to slow. Rise = -1.53 after 13080 ms
I've read that i can disable the decouple test feature but i'd prefer to fix the problem not the symptom.
The thermistor might have a bad contact but i don't known what could be causing the slow temp rise. I'm only using one fan (on the heatsink) so that shoudn't be the problem. Any ideas?
