Duet2 Wifi 3-Wire Fan Commissioning Issues

[JRCL]

I'm attempting to connect a 3-wire 24V hotend fan to my Duet2 Wifi, running v3.3 connected to a 24VDC source. The fan jumper is on VIN and I have the positive and negative wires of the fan on FAN1. The tacho is connected to the cathode of a 1N4148 diode and anode to PB6 per recommendations. The fan turns on briefly when the board is powered up as expected; however, when I try to turn it on manually using M106 P1 T1 H1, it never does. Trying to rule out if its an issue with my config.g or in the hardware/wiring. Please ignore the lack of stepper, z-probe, axes limits, content that's been intentionally left out for now.

Here is my config file, which is showing no issues in the console.

; Configuration file for Duet WiFi (firmware version 3.3)
; executed by the firmware on start-up

; General preferences
M575 P1 S1 B57600                               ; enable support for PanelDue
G90                                             ; send absolute coordinates...
M83                                             ; ...but relative extruder moves
M550 P"PrintTestBench"                              ; set printer name

; Network
M552 S1                                         ; enable Wifi
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 S0         ; physical drive 1 goes forwards
M584 Y0 E1		   ; drive mapping

; Motor Speeds and Accelerations


; Axis Limits


; Endstops


; Z-Probe


; Heaters
M308 S0 P"e0temp" Y"thermistor" T100000 B4725 C7.06e-8 ; configure sensor 1 as thermistor on pin e0temp
M950 H0 C"e0heat" T0                                   ; create nozzle heater output on e0heat and map it to sensor 1
M307 H0 B0 S1.00                                       ; disable bang-bang mode for heater  and set PWM limit
M143 H0 S280                                           ; set temperature limit for heater 1 to 280C


;FANS
;Part Cooling
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
;Heatsink
M950 F1 C"fan1+^exp.pb6" Q500 ; create fan 1 on pin out4 and set its frequency
M106 P1 S1 H1 T45      ; set fan 1 value. Thermostatic control is turned on


Tools;
M563 P0 D0 H0 F0 ; tool 0 uses extruder drive 0, heater 1 and fan 0 (part cooling fan)
G10 P0 X0 Y0 Z0  ; set tool 0 axis offsets
G10 P0 R0 S0     ; set initial tool 0 active and standby temperatures to 0C

; Epilogue
M912 P0 S0                                         ; Put your CPU temperature sensor correction here
M501                                               ; load saved parameters from non-volatile memory
M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss
T0

[dc42]

@JRCL said in Duet2 Wifi 3-Wire Fan Commissioning Issues:

when I try to turn it on manually using M106 P1 T1 H1

H1 means the fan is thermostatically controlled based on the reading from sensor 1, however you don't have a M308 command to define sensor 1.

[JRCL]

@dc42 I see! Changing my thermistor from sensor 0 to sensor 1 in the M308 pin fixed the issue. Thanks!