Printer don't heat after longer in IDLE state 3.4b7+1

Alex.cr

Basically, if the temp of the hot end goes below 18C or so. If I remove power for 24+ hours and then fire the machine up it will occur.
Mine just effects my hot end on my 1LC. My bed heater on my 6HC works fine.
Yes to all 3 questions.

4.stop.g

G1 E-3.0  F1500              ; clear extruder
G91                     
G1 Z5.0  F20000               ; move Z from part
G90
M104 S0 		; Extruder heater off
M140 S0 		; Bed heater off
M141 S0         ; Chamber heater off
M106 P3 S0      ;turn off lights
M106 P2 S0      ;turn off MCU fans
M106 P0 S0      ; Turn part fan off
M106 P6 S0 ; turn off Nevermore fan

M220 S100		; Set speed factor back to 100% in case it was changed
M221 S100		; Set extrusion factor back to 100% in case it was changed

M98 P"/macros/print_scripts/goto_bucket.g"    ;go to park position over bucket

MikeDC

I finished a long print around 3 hours ago today and left the printer idle afterwards.
I have just tried another print,
My main contactor does switch on but the bed is not heating.
i cancelled the print and thought i would do a couple of tests.
I can heat the nozzle manually and disable the nozzle heater
I have full control of it from both paneldue and dwc

the bed heater no control on temperature
i can manually turn the contactor on and off both by the paneldue and dwc
i can appear to enable / disable the bed heater
but it just doesnt heat up.

Only a full power reset will allow it to work again

dc42

@mikedc This is fixed in 3.4.0beta7+4, see https://forum.duet3d.com/topic/26787/unofficial-rrf-3-4-0beta7-2-files.

MikeDC

@dc42
is this a different b7+2 to what i am on ?
I used b7+2 to fix the z on expansion card issue but i still have this issue with bed not heating up after idle

jay_s_uk

@mikedc yes. the latest builds on that thread are now 3.4b7+5

MikeDC

@dc42
ahh now b7+4 thankyou :)))

I will install after my print has finished

SIam

@dc42 It looks good ! Thanks for fixing this issue

bastien

for me, b7+4 don't resolve problem

Fred-Y

@bastien New version have been published since b7+4, I believe the last one is +7
I don't remember having this error lately.

You should be able to download b7+7 from here:
https://forum.duet3d.com/topic/26787/unofficial-rrf-3-4-0beta7-4-files/17?_=1642785164011
Need to scroll to get the link.

bastien

it's ok with b7+7, thanks