How to do a Master reset of the Fleck 5810SXT control valve

Here's how to perform a master reset of the Fleck 5810SXT control valve:

1. Unplug the power cable from the wall
2. Press and hold the 'Next Cycle' button while plugging the power cable back in
3. Continue to hold the 'Next Cycle' button for 3 seconds, then release it
4. The control valve will now be reset to factory default settings