Part Cooling fan Wont turn off - Fan0

[Adamfilip]

Fan0 on my Duet Wifi wont turn off even if the value is set to 0
is a 2 wire blower fan

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

[cosmowave]

@adamfilip which FW are you using?
Is the wiring correct?
Can you control the speed or is the fan always on full speed?

[T3P3Tony]

@adamfilip sounds like a fan MOSFET may have blown. What happens if you swap to fan 1 or fan 2 if fan 1 is in use

[Adamfilip]

@t3p3tony if I use Fan2,, its the same.
and speed can be controlled just not to none

[Adamfilip]

@cosmowave
I can control speed but not turn it off

Board: Duet 2 WiFi (2WiFi)
Firmware: RepRapFirmware for Duet 2 WiFi/Ethernet 3.2 (2021-01-05)
Duet WiFi Server Version: 1.25

[T3P3Tony]

@adamfilip ahh ok not the same issue. please post the model number of the fan and a clear pic of how it is wired. Also is this a new fan or did it used to work before?

[cosmowave]

@adamfilip can it be that something is wrong in the wiring of the fan?Perhaps a defect fan-cable which has a little conductivity to GND?