@fcwilt @Phaedrux Thank you very much for the help.

I have measured the power current of the fan and found that it is too much. The current of the fan rised above 1A after a short time.

I have replaced the fan and now everything works.

I feel a little ashamed.
I have found the error.
The menu files were in a wrong folder.
Now everything works.

Thank you all for the Help

@oliof

Thank you, I have tried that.

M918 P2 E4 F200000 C30 R6
G4 P1
M918 P2 E4 F200000 C30 R6
M150 X2 R255 U255 B255 S3

but does not work

Which values are loaded during the firmware update. These would work.

@lodger
Yes this are my config

M918 P2 E4 F2000000 C30 R6
M150 X2 R255 U255 B255 S3

Hello together
I have a BT Mini 12864 connected to my Duet 3 Mini 5+.
The display is identical in construction to the FYSETC MINI 12864

I have turned the tub for the pins on the back so that the pin assignment is correct again.
I have also loaded a menu file.
RRF 3.2.2

But unfortunately I see only one line.
The strange thing is. When I do a firmware upgrade. Then the display shows "Updating firmware".

What am I missing?

Normally it shows the

When updating the

All these test were with the new config.

M308 S0 P"temp0" Y"thermistor" T100000 B4725 C7.06e-8

I have made a few tests with different PWM values.

M307 H0 R1.726 C184.233:184.233 D1.53 S1.00 V24.1 B0 ; 1.00 PWM
M307 H0 R1.712 C169.414:169.414 D1.31 S0.80 V24.1 B0 ; 0.80 PWM
M307 H0 R1.703 C173.799:173.799 D1.23 S0.75 V24.0 B0 ; 0.75 PWM
M307 H0 R1.651 C161.829:161.829 D0.99 S0.60 V24.2 B0 ; 0.60 PWM
M307 H0 R1.499 C169.336:169.336 D0.79 S0.50 V24.2 B0 ; 0.50 PWM

With S0.5 it works. But the heating up goes very very long.

@Phaedrux
Then I tested with increased dead time, but it did not work.

M307 H0 R1.726 C184.233:184.233 D10 S1.00 V24.1 B0

Then I tried to decreasing the gain, and this work.

M307 H0 R1.0 C184.233:184.233 D1.53 S1.00 V24.1 B0

I can't believe it.

Can I leave it set like this? Or does this still need to be optimized?

@Phaedrux yes i did. but did not help

I now know that it is a semitec104gt thermistor. But I have not yet solved the problem.

@Phaedrux on OUT0 PIN 1&2

@LB

yes i have a config-override.g the content is as follows:

; config-override.g file generated in response to M500 at 2021-03-15 13:34
; This is a system-generated file - do not edit
; Heater model parameters
M307 H0 R1.911 C66.100:66.100 D1.19 S1.00 V24.1 B0
M307 H1 R4.902 C144.300:144.300 D7.31 S1.00 V24.2 B0

and in the config.g at the end M501
is that correct?

@LB the temp diagram is shorter