Fan Error - Inverted

Jman3

Hello,

Background: I recently upgraded my Ender 3 pro with a Sprite Pro Extruder and added 5015 blower fans. I have a Duet 3 mini 5+ ethernet and my original hotend worked as expected.

Problem: While comissioning I noticed that my hotend fan was on at room temp and turned off when the thermostatic control is supposed to turn it on. I messed around with the settings changing it to a non thermostatic control and it seems inverted. When I turn it on its off and when I turn it off its on. I feel like there is something simple that I am missing in my .config but reading through the documentation and troublshooting hasen't yeilded anything. I also searched around on the forum and didn't find a similar post.

My next plan was just to go from Out6 to Out3 to see if I have a hardware issue.

Anyone have ideas for what might be happening?

.config

; Configuration file for Duet 3 Mini 5+ (firmware version 3.3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.3.16 on Tue Nov 14 2023 20:04:52 GMT-0600 (Central Standard Time)

; General preferences
G90                                                ; send absolute coordinates...
M83                                                ; ...but relative extruder moves
M550 P"My Printer"                                 ; set printer name

; Network
M552 P0.0.0.0 S1                                   ; enable network and acquire dynamic address via DHCP
M586 P0 S1                                         ; enable HTTP
M586 P1 S0                                         ; disable FTP
M586 P2 S0                                         ; disable Telnet

; Drives
M569 P0.0 S0 D3 V0                                 ; physical drive 0.0 goes backwards, D3 = stealthchop (this works well with low motor torques)
M569 P0.1 S0 D3 V0                                 ; physical drive 0.1 goes backwards, D3 = stealthchop (this works well with low motor torques)
M569 P0.2 S1 D3 V0                                 ; physical drive 0.2 goes forwards, D3 = stealthchop (this works well with low motor torques)
M569 P0.4 S0 D3 V0                                 ; physical drive 0.4 goes backwards, D3 = stealthchop (this works well with low motor torques)
M584 X0.0 Y0.1 Z0.2 E0.4                           ; set drive mapping
M350 X16 Y16 Z16 E16 I1                            ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z400.00 E143.9                  ; set steps per mm
M566 X900.00 Y900.00 Z60.00 E300.00                ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z600.00 E3600.00            ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z200.00 E2500.00              ; set accelerations (mm/s^2)
M906 X600 Y600 Z600 E900 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 X235 Y235 Z260 S0                             ; set axis maxima

; Endstops
M574 X1 S1 P"io5.in"                               ; configure switch-type (e.g. microswitch) endstop for low end on X via pin io5.in
M574 Y1 S1 P"io6.in"                               ; configure switch-type (e.g. microswitch) endstop for low end on Y via pin io6.in
M574 Z1 S2                                         ; configure Z-probe endstop for low end on Z

; Z-Probe
M950 S0 C"io3.out"                                 ; create servo pin 0 for BLTouch
M558 P9 C"io3.in" H5 F120 T6000                    ; set Z probe type to bltouch and the dive height + speeds
G31 P25 X-44 Y-17 Z0.65                           ; set Z probe trigger value, offset and trigger height
M557 X30:230 Y30:230 S50                           ; define mesh grid

; Heaters
M308 S0 P"temp0" Y"thermistor" T98801 B4185        ; configure sensor 0 as thermistor on pin temp0
M950 H0 C"out0" T0                                 ; create bed heater output on out0 and map it to sensor 0
M307 H1 R2.641 K0.738:0.011 D4.18 E1.35 S1.00 B0 V23.8     ; disable bang-bang mode for the bed heater and set PWM limit, added Tuning here
M140 H0                                            ; map heated bed to heater 0
M143 H0 S120                                       ; set temperature limit for heater 0 to 120C
M308 S1 P"temp1" Y"thermistor" T98801 B4185        ; configure sensor 1 as thermistor on pin temp1
M950 H1 C"out1" T1                                 ; create nozzle heater output on out1 and map it to sensor 1
M307 H0 R0.314 K0.257:0.000 D4.50 E1.35 S1.00 B0           ; disable bang-bang mode for heater  and set PWM limit, added Tuning here
M143 H1 S260                                       ; set temperature limit for heater 1 to 260C

; Fans
M950 F0 C"out5" Q500                               ; create fan 0 on pin out5 and set its frequency
M106 P0 C"Part Cooling" S0 H-1                     ; set fan 0 name and value. Thermostatic control is turned off
M950 F1 C"out6" Q500                               ; create fan 1 on pin out6 and set its frequency
M106 P1 C"Heat Block HotEnd" S1 H1 T45             ; set fan 1 name and value. Thermostatic control is turned on

; Tools
M563 P0 S"HotEnd" 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
M204 P600 T2000				                                ; Set accelerations (mm/s^2) for print and travel moves
M912 P0 S-13 				                                  ; CPU Temperature calibration
M572 D0 S0.35				                                  ; Pressure advance
M207 S6.5 R0.0 F2800 T4800 z0.0                    ; Retraction
M280 P0 S160				                                   ; Clear any alarms
M402						                                         ; Retract Pin

; Miscellaneous
M501                                               ; load saved parameters from non-volatile memory
M911 S21 R23 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss
T0                                                 ; select first tool

dc42

@Jman3 is it by any chance a 4-wire fan?

Jman3

@dc42 No, it's a 2 wire.

Jman3

So did this IC burnout?

my board

Documented picture

Jman3

It turns out I must have burned up my Out6 while poking around with a multimeter. I switched to Out3 and the hotend fan thermostatic control is working as it should now.