@wilriker said in Duet Wifi strange error : Heater fault:
M140 H-1 ; Disable heated bed
YEAHHHHH it work she aliveeeeee. Fantastic.
Thank you all for the support you gave me, you were very kind and very prompt. Finally everything works properly and I have also understood the logic that generated the error.
Thank you
@dougal1957 ok really really thanks. I have done:
but i always have the fault problem on the bed!!!!
@dougal1957 i know, but for the moment and for the future i don't want to use the bed and the second extruder! so i prefer to disable a moment in the firmware. On december i think that i'll try to activate the bed and the second extruder.
@Dougal1957 nooooooo you aren't say me that the bed heater disconnect make this error????
I don't believe! How do you suggest to disable? by comment the firmware, on config.g?
i have look verry verry carefully the DWC here is a screen video me i don't see nothing of strange
Screen capture video
yes I have it and keeps giving the same error after 9 minutes
you are right, i'm sorry, i haven't see that the m143 h2 was 230!
But nothing the printer stop at 9 minuts!!!
I have tryed to do auto tuning at 270° and save with m500 but at 9 minuts stop:
Cancelled printing file sgianpolrotato.gcode, print time was 0h 9m
Error: Shutting down due to un-cleared heater fault after 600 seconds
now i don't really know what can i do!
update i have tryed to set 170 as active or standbye temperature, and it work, so I set 180, 190...220 and it work but if i write 230, the H2 go off 
ok really really thanks for your help. i have done the auto tune only the first one don't show me error the other: 
but i have done the M307 H2 and show: 
So i have do M500 and on config i have write:
M307 H2 A537.6 C202.5 D5.9 B0
But now i have a problem: when i select my tool and i do: G10 P1 S230 nothing is happen!!! I have try to delete the row M307 H2 A537.6 C202.5 D5.9 B0 on my config but no more heate the nozzle!
but i'm not sure that i have done the right things:
ok i have tryed to do but, is not easy 
now when io check the tune:
M303
Heater 1 tuning failed
Grrrrrr i hope to do 
No i didn't perform m303 run heater tuning, i'm try to understand the guide that you have link to me. Really thanks
OK i have try to do this:
nozzle diameter: 0,80
extrusion multiplier: before was 1 now 0,80
Extrusion with: before was 0,96 now 0,90
First layer speed: before was 80% now 65%
Speed: i have tryed 30mms, 40mms, 50mms.
But always at 0:9 minuts the error jump!!!
For the PID, i have controlled this parameters on config:
; Heaters;
M305 P0 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 0
M143 H0 S120 ; Set temperature limit for heater 0 to 120C
M305 P1 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 1
M143 H1 S280 ; Set temperature limit for heater 1 to 280C
M305 P2 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 2
M143 H2 S280 ; Set temperature limit for heater 2 to 280C
Alway always stop at 0.9minut
I have done another test!
With my gcode at 230° i have set manually the duet at 245, i hope that the more gap by the machine and gcode help the tollerance of heater fault. But no!!! The machine Stop after 2 minute of work. But if i use the same file and not load the filament, this problem disappear
I have a Duet wifi, i print PLA at 230 ° after a few minutes of printing show me this error: "Canceled printing file test.gcode, print time was 0h 9m
Error: Shutting down two to one-cleared heater fault after 600 seconds "
I did ghost print without PLA filament with temperature 0° gives me the following error:
"Warning: Tool 1 was not heated because it has a heater fault" but completes printing.
I did another phantom print test with the 230° temperature without pla filament and completed it.
Is it possible that the pla filament with a 0.8 nozzle can give problems to the temperatures?