Geeetech

Hello,
I am receiving the following error:

Error: Nozzle 0-TEMP
The heating element is out of order!
The printing Job has stopped.

The printer has been printing fine for a few weeks. The current model has been printing for about 48 hours and is about 3 hours away from completing. I try to unpause the print and it prints for about 30 seconds before giving the same error.
I have manually extruded the filament via the lcd screen and that seems to be working fine.
I am on fw 1.38.59.
Any suggestions?

It means the heatbed or the hotend has an issue of the temp.
You need to check the thermistor at first.Maybe the wires loose.
Or you can try to use the new thermistor to replace it.

How do i check the thermistor? Is there some instructions or a video maybe?

Hi,
You can use the multimeter to check it.
The normal thermistor resistance should be 80~120KΩ
I don't have A30 but I have the A10 printer(The heatbed wires should be the same) The blue and green lines are for the NTC thermistor.

I had the same issue.
Buy yourself a set of heating elements and thermistors.
You should know that thermistors often showing wrong temperatures even if they are new, so buy yourself a whole set (maybe 5x or more each).
Both were defective from the beginning at my A30 and the first thermistor I changed was also showing wrong.

If you've got hardware version 3.3 (24V) like me:
For changing the thermistor some soldering is required but its easy to solder.
The heating element cable is fixed with screws on a connector.
Don't fix the heating element too tight with the screw.
I get errors when I put the heating element to deep into the whole or fixing it too tight, so keep it a little bit outside, else you maybe get the same errors again.
You can remove the whole hotend with 2 screws on the top of the hotend-frame and by removing the filament tube (could also work without removing but its easier with removing)
If you are doing your job well and are not moving the Z-axis, you could resume the print afterwards.