@jay_s_uk

So I used a fresh SD card and reflashed the firmeware and all seems well. Thanks for all the help.

@jay_s_uk

So I used a fresh SD card and reflashed the firmeware and all seems well. Thanks for all the help.

@jay_s_uk
SO I ran the PID tuning for both heaters and got this:

2021/12/13, 15:49:54 M307 H1
Heater 1 model: heating rate 2.429, cooling time constant 140.0, dead time 5.50, max PWM 1.00, calibration voltage 0.0, mode PID
Computed PID parameters: setpoint change: P13.4, I0.482, D51.4, load change: P13.4, I0.949, D51.4

2021/12/13, 15:49:46 M307 H0
Heater 0 model: heating rate 2.429, cooling time constant 140.0, dead time 5.50, max PWM 1.00, calibration voltage 0.0, mode bang-bang

@jay_s_uk

Wrong H value, sorry:

Heater 0 model: heating rate 2.429, cooling time constant 140.0, dead time 5.50, max PWM 1.00, calibration voltage 0.0, mode bang-bang

@jay_s_uk

Heater 1 model: heating rate 2.429, cooling time constant 140.0, dead time 5.50, max PWM 1.00, calibration voltage 0.0, mode PID
Computed PID parameters: setpoint change: P13.4, I0.482, D51.4, load change: P13.4, I0.949, D51.4

@jay_s_uk
So M140 straight up doesn't work and the heater keeps faulting for 0.3C/s temperature rise. It's just heating super slowly when commanded over serial. But when tuning PID it works fine.
Bang bang mode also heats it super slowly.

@jay_s_uk
Thanks so much for the assistance!

@jay_s_uk
Yes I just tuned the bed and it heated slowly but fine.
M140 now works, though slowly
Still can't set the temperature from the LCD panel though

@jay_s_uk

With no SD card the LCD is blank. I can't connect over serial either in this state.

With the SD card in, sending M140 S55 results in:
"[ERROR] Error: Heater 0 fault: at 30.4°C temperature is rising at 0.4°C/sec, well below the expected 2.2°C/sec" Then the heater faults and needs to be reset

Images:

@jay_s_uk

Thanks for the assist.

M122 reports
"Bed heaters 0, chamber heaters -1, ordering errs 0"
But the config does define a bed heater?

M122.txt
M122 P200.txt

I have installed a BTT RRF 1.1 board in my Ender 3.
The bed does not heat when commanded to, though the hotend works fine (everything works fine).

The bed heating warning (not reaching commanded heat) does not trigger either.
I have attached my config.g file if that will help: config.g