My extruder won't heat up

zoeconner

Ive tried everything. Every software version of repetier and still nothing . Its not my wire connector and I have voltage. I can manually set the temp on the extruder will printing. Also its not in dry run. Does anyone have any ideas for me to check? Also my g code says its telling to heat but nothing. Ive seen other people had this problem and fixed it but didn't come back and tell how they did that. Here is my g code

zoeconner

; generated by Slic3r 1.1.7 on 2016-02-20 at 08:57:38

; perimeters extrusion width = 0.50mm

; infill extrusion width = 0.70mm

; solid infill extrusion width = 0.70mm

; top infill extrusion width = 0.70mm

G21 ; set units to millimeters

M107

M190 S105 ; wait for bed temperature to be reached

M104 S255 ; set temperature

G28 ; home all axes

G1 Z5 F5000 ; lift nozzle

M109 S250 ; wait for temperature to be reached

G90 ; use absolute coordinates

G92 E0

Repetier

The code is ok, so it must be a firmware issue not a host problem. The question here is first how far does the code come. First it is waiting for bed to reach 105°C so does it happen?

Does M104 work which is used when you heat manually. M109 will again wait for extruder to reach temperature.

zoeconner

Yes the bed reaches temp ok. Not sure what you mean by "does m104 work?

Repetier

I mean does sending

M104 S255

heat the extruder.

The thing is you need to verify if commands finish and what happens at which command. M190 for example might heat bed but never return because you have configured it to swing out very precisely and that never happens. Then the rest would never execute.

M104 could enable extruder and M109 could disable it. Only when you know what fails you know where to look.

grayknight235

I'm having the same issue. It does look like when the nozzle reaches its temperature, the bed stops heating on mine. How do I fix that?

Repetier

Extruder and bed temperature are not connected. If you send M140 S0 bed will stop heating of course.
So check your gcode and analyse the log to see what goes on when it happens. It is either a command send or an error occuring and that is normally logged, also it depends on firmware you use.

venkatesh_edward

I have same issue
As soon as i connect to Ramps Board and open Repetier Host
It shows extruder as 299.4 'c
I haven't heated the extruder
In log its showing as
Disabled all heaters due to detected sensor defect...

Repetier

Make sure to use the right sensor type. Wrong types can give totally wrong temperatures. Also make sure the analog input used is made for the sensor type. E.g. a PT100 sensor will not work at the thermistor input. Also as always make sure to use the right input pin number. The default names TEMP_0_PIN - TEMP_2_PIN are for thermistors. So if you have one of them try swapping cable until you see a temperature.

mbbrewerca

Mine is having the same issue. I can manually enter the temperature by entering: M104 S150 When I do this, it goes to the desired temperature. However I cannot seem to do this anymore through the Repetier Host's Manual Control. It also seems to not heat up when I send a STL file to print.

MartinH

mbbrewerca said:

Mine is having the same issue. I can manually enter the temperature by entering: M104 S150 When I do this, it goes to the desired temperature. However I cannot seem to do this anymore through the Repetier Host's Manual Control. It also seems to not heat up when I send a STL file to print.

Sounds like you may have enabled 'dry run' mode. check the tick box at the bottom of the manual control next to the ok button

jlsilicon

I agree. The software needs a Block Printing if Extruder is Not Heating option / function.

I seem to have a broken exteruder Heater.
But, the Repetier just keeps the Bed (to 65C), but skips Heating the Extruder - and just starts printing.
It does display 'Heating Extruder' on the top banner - but does not wait for the temperature to reach needed or any higher level.
The Extruder stays cold - and both displays 32C on the Printer and on the Repetier App.

And No , DryRun' is NOT enabled, I can see the Filament Motor actively grinding away at my non-moving Filiment - because the Extruder is still cold.

I tried shutting down the Printer & Repetier App multiple times
- it still skips heating the Extruder, before printing, after heating the Bed.

'Settings' - seem to have a 'Check Extruder Temp' option, but no Block if extruder not heating option.

*** Does Repetier intend on adding this 'Block Print if Extender Not Heating' Option / function ... ???

Repetier_Support

Hello. There is A Gcode called M109 to wait until the extruder reaches the target temperature. Maybe you have missed using it?

ackrolix123

Try to utilize the right sensor type. Wrong sorts can give absolutely off-base temperatures. Likewise ensure the simple info utilized is made for the sensor type. For example a PT100 sensor won't work at the thermistor input. Likewise as consistently make a point to utilize the right information pin number. The default names TEMP_0_PIN - TEMP_2_PIN are for thermistors. So in the event that you have one of them take a stab at trading link until you see a temperature.

Thanks