Control system

A cyclical method of day-to-day control of a characteristic of a body of water comprising:

• manually selecting a daily dispensing cycle having a fixed time period P;
• manually selecting a portion of the daily dispensing cycle period P that a dispenser is set in a dispensing condition and manually selecting a remaining portion of the dispensing cycle period the dispenser is in a second condition through a control module either integrated in a system controller or through a control module in wireless communication therewith;
• and
• automatically controlling the characteristic of the body of water by continually repeating the dispensing cycle to periodically release a water characteristic affecting material by opening and closing a solenoid valve during the period P without feedback of the characteristic of the body of water;
• changing the portion of the dispensing cycle period in the dispensing condition and correspondingly changing the remaining portion of dispensing cycle period in the second condition to thereby change an amount of dispensable material deliverable to the body of water over a duty cycle without changing the dispensing cycle period P.

A method of manually maintaining a water characteristic in a body of water over a period of time P without manual control of the flow through a dispenser comprising:

• manually selecting a dispensing cycle;
• dispensing a water characteristic affecting material into the body of water from the dispenser in response to a manual selection of a dispensing portion of the dispensing cycle;
• during the dispensing cycle regularly interrupting the dispensing of the water characteristic affecting material into the body of water during the period of time P by the manually selecting of the dispensing cycle to thereby automatically maintain the water characteristic of the body of water by periodically limiting when an amount of the water characteristic affecting material is dispensed from the dispenser into the body of water during the period of time P;
• manually adjusting the dispensing through a control module either proximate or in wireless communication therewith by changing a fraction of the period of time P that the system is in a dispensing condition without changing the period of time P;
• and
• suspending the regularly interrupting the dispensing of the water characteristic affecting material during the period P to accommodate extra use of the spa.