bed thermistor problem

[sg2020]

Duet Wifi
RRF 3.2.2
AC silicone heater w/SSR, Thermistor

The heated bed was working on RRF2.1. Since upgrading it has not worked.
When I turned on my heated bed I received "Error: Heater 0 fault: temperature rising much more slowly than the expected 1.1°C/sec"
Spurious heater faults and how to avoid them recommended running a PID tune.

I tried to run M303 T0 S60 and that turned on my extruder
M303 T1 S60 gave me an error saying "Error: M303: tool 1 not found"

If I understand the gcode correctly, T0 should be the bed heater and T1 should be the extruder.

I should also add that my heater settings in RRF 2.1 was
M305 P0 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 0
M143 H0 S120

Why isn't my bed heating up? what am I doing wrong?

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.2.3 on Sun Jun 06 2021 18:17:52 GMT-0700 (Pacific Daylight Time)

; General preferences
G90                                            ; send absolute coordinates...
M83                                            ; ...but relative extruder moves
M550 P"My Printer"                             ; set printer name
M669 K1                                        ; select CoreXY mode
M564 S0 H0                                     ; allow movement outside of boundry, before homing

; Network
M552 S1                                        ; enable network
M586 P0 S1                                     ; enable HTTP
M586 P1 S0                                     ; disable FTP
M586 P2 S0                                     ; disable Telnet

; Drives
M569 P0 S0                                     ; physical drive 0 goes backwards
M569 P1 S1                                     ; physical drive 1 goes forwards
M569 P2 S1                                     ; physical drive 2 goes forwards
M569 P3 S0                                     ; physical drive 3 goes backwards
M584 X0 Y1 Z2 E3                               ; set drive mapping
M350 X32 Y32 I0                                ; configure microstepping without interpolation
M350 Z16 E16 I1                                ; configure microstepping with interpolation
M350 X32 Y32 Z16 E16 I1                        ; Configure microstepping with interpolation
M92 X160.00 Y160.00 Z3230.00 E820.00           ; set steps per mm
M566 X900.00 Y900.00 Z60.00 E120.00            ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z180.00 E1200.00        ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z20.00 E250.00            ; set accelerations (mm/s^2)
M906 X1600 Y1600 Z1500 E800 I30                ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                        ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1                               ; set axis minima
M208 X550 Y330 Z400 S0                         ; set axis maxima

; Endstops
M574 X1 S1 P"xstop"                            ; configure active-high endstop for high end on X via pin xstop
M574 Y1 S1 P"ystop"                            ; configure active-high endstop for high end on Y via pin ystop
M574 Z1 S2                                     ; configure Z-probe endstop for low end on Z

; Z-Probe

M558 P9 C"^zprobe.in" H2 F500 T8000 A1		    ; set Z probe type to bltouch and the dive height + speeds
M950 S0 C"exp.heater3"							; create servo pin 0 for BLTouch
G31 P500 X-6.5 Y-27 Z1.88                           ; set Z probe trigger value, offset and trigger height 1.88
M557 X15:570 Y15:315 S71                       ; define mesh grid
M280 P0 S10 ; send control signal to BLTouch through servo/gpio 0

; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B3950 ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0                          ; create bed heater output on bedheat and map it to sensor 0
M307 H0 B0 S1.00                               ; disable bang-bang mode for the bed heater and set PWM limit
M140 H0                                        ; map heated bed to heater 0
M143 H0 S120                                   ; set temperature limit for heater 0 to 120C

M308 S1 P"spi.cs1" Y"rtd-max31865"             ; configure sensor 1 as thermocouple via CS pin spi.cs1
M950 H1 C"e0heat" T1                           ; create nozzle heater output on e0heat and map it to sensor 1
M307 H1 B0 S1.00                               ; disable bang-bang mode for heater  and set PWM limit
M143 H1 S280                                   ; set temperature limit for heater 1 to 280C

; Fans
M950 F0 C"fan0" Q500                           ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1                                 ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500                           ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H1 T45                              ; set fan 1 value. Thermostatic control is turned on

; Tools
M563 P0 D0 H1 F0                               ; define tool 0
G10 P0 X0 Y0 Z0                                ; set tool 0 axis offsets
G10 P0 R0 S0                                   ; set initial tool 0 active and standby temperatures to 0C

; Custom settings are not defined

; Miscellaneous
M575 P1 S1 B57600                              ; enable support for PanelDue

[Phaedrux]

@sg2020 said in bed thermistor problem:

I tried to run M303 T0 S60 and that turned on my extruder

T0 is for tool 0. The T option is a recent addition to tune tools which takes the part cooling fan into account during tuning.

For the bed, you want H0 for heater0. M303 H0 S60

[sg2020]

@phaedrux oh that's funny. I'm going to try that.