Master Reset of Clack WS1 Control Valve

There may come a time when you want to clear all of the settings on your Clack control valve and reset the valve to its factory defaults. The instructions below will explain how to do this. Please note that this will also reset the valve history.

There are several button configurations for Clack control valves, but here is the button configuration for the Clack valve used by Aquatell:

For Master Reset:

  1. Press and hold the NEXT and DOWN buttons for 5 seconds, then release
  2. Press and hold the UP and DOWN buttons for 5 seconds, then release
  3. Screen will go blank, the internal piston will move, time of day reverts to 12:00pm
  4. The control valve has now been reset to factory defaults
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