Can't control fan with M106

  • Hi,

    I'm scratching my head on this one and would appreciate a steer in the right direction. I have a dual extruder setup with a fan for each extruder (identical 5V fans) and a fan for part cooling.

    FAN0: Extruder 1
    FAN1: Extruder 2
    FAN2: Part Cooling

    I can control fans 0 and 2 with the M106 command, but I can't control FAN1. I have confirmed there is nothing wrong with the wiring/fan by unplugging the fan from the Duet headers and connecting to some external 5V header pins.

    The fans are configured as follows:
    M106 P0 S1 I0 F500
    M106 P1 S1 I0 F500
    M106 P2 S0 I0 F500

    Software information:
    Firmware Name: RepRapFirmware for Duet WiFi
    Firmware Electronics: Duet WiFi 1.0
    Firmware Version: 1.17e (2017-02-10)
    WiFi Server Version: 1.03 (ch fork)
    Web Interface Version: 1.14a

    Any help would be much appreciated!

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