SoliForum - 3D Printing Community — Fluctuating temperatures in both bed and extruder

Re: Fluctuating temperatures in both bed and extruder

2014-06-19T13:03:48Z

Glad you figured it out. You can change Max temp in firmware if you need to.

Re: Fluctuating temperatures in both bed and extruder

2014-06-19T03:55:48Z

You guys were right. Turns out the printer was auto setting after part start to 215c (freshly installed software before I repaired printer) I am guessing that the fluctuation of the high temp was enough to set off that 220 emergency stop.

Re: Fluctuating temperatures in both bed and extruder

2014-06-18T18:30:17Z

Can you show a graph after the PID for comparison?

Re: Fluctuating temperatures in both bed and extruder

2014-06-16T06:42:56Z

Here is the temp graph....hasent crashed yet. I ran a PID autotune as recommended just now.....i am going to run a job and see what happens.

Re: Fluctuating temperatures in both bed and extruder

2014-06-16T04:11:19Z

A screenshot of your temp graph would help. Have you done PID auto tune lately? Sounds like it could be running up against Max Temp which is 220.

Fluctuating temperatures in both bed and extruder

2014-06-16T04:00:39Z

So i have been getting the temperature is reset error alot. falling temperatures in both the bed and extruder. Eventually the bed stopped having problems and then Finally the extruder stopped heating up period. Went through and tested everything and found a fatigued wire going to the extruder. I replaced all the wiring and it worked fine and started printing. Then suddenly it got that error again and sure enough its holding the bed at 32 c and the exctruder at 50 c. When they should be at 215 and 105 respectively. If i hold a lighter to the extruder it goes right up in temperature so its not a thermoresister problem. And the fact that both the bed and extruder are having the issue makes me think there is a deeper problem. Any help would be great....im running out of stuff to fix.

p.s. the hot ends only a few months old. Also if i disconnect the software from the printer then re connect they start to heat up fine but will eventuallf fall and send the print job into error.