This will advance the valve to the backwash position.
Water should slowly enter the tank.
NOTE: If there is a loud knocking sound, simply turn the bypass handle back slightly as the system is filling too quickly.
During this process, peroxide should be injecting into the system.
The water going to the drain will be dark at first and then slowly start to clear up.
The water in the drain should be running clear by the end of the Rapid Rinse Cycle.