Sonuus Wahoo Factory Reset
There is a way to fully reset the Wahoo to factory settings, including erasing all presets. The procedure is as follows (it's rather convoluted to ensure noone does this by mistake!)
(1) Press and hold: <FILTER 1/2> + <LEVEL knob> + <SAVE> for 10 seconds.
(2) The display should then show "CLr" to indicate you are going to do the full restore.
(3) Simultaneously press the <UP> and <DOWN> buttons (the arrows next to the display), and everything will be cleared.
Of course there is no way to undo this. At step (3), pressing any other button will get you out of clear mode without clearing anything.
The calibration data won't be erased (the pedal and filter calibrations). To make sure the pedal is calibrated correctly, you may want to follow the procedure in the manual for doing this after restoring as above.