Expression pedal polarity reverse

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    From the Deeper View and Reference Manual, pp 43,44:


    Expression pedals


    An expression pedal works just like a wah or volume pedal, but is made for digital devices. It only needs one cable
    with a stereo jack, connected to one of the dedicated pedal inputs. If you use a regular expression pedal (e.g.
    RolandTM), please select “Pedal (Type 1)” with soft knobs 1 or 3. If you use an expression pedal with reversed
    polarity (e.g. YamahaTM), please select “Pedal (Type 2)”. You can monitor the changing swell value of the pedal on
    soft knobs 2 and 4. If you find that the pedal does not cover the full value range, press “Pedal n Init” on the
    respective soft button, then perform a full swell on the pedal to re-calibrate it.


    HTH :)