I am currently working on a BBC hybrid dual. I have gotten to step 7 in commissioning. This is where I hit a road block. When heating the left extruder, the nozzle will get to around 200°c (when I requested 285) then give me an error HEATING FAILED. The printer then won't respond and the only way to get it to respond is to switch off power and reset. Same happens with the right extruder. Please help!