[. . . ] A built-in timer will shut the pump off after 20 minutes unless it has been manually deactivated. [. . . ] A built-in timer will shut the light off after 2 hours unless it has been manually deactivated. The "Light" indicator will be on when the light is on. "Light" indicator To change the water temperature: Press the Up or Down arrow key to increase or decrease the desired water temperature. The selected temperature setting will be displayed for 5 seconds as a confirmation. The "Set Point" indicator light indicates that the temperature shown is the desired, and not the current, temperature of the water!If the temperature cools down to 1°F (0. 5°C) above set point before the scheduled end of the cycle, filtering will resume for the remaining of the programmed duration. Note: After a power failure, the filter cycle duration will return to its default value (6 hours). In this case, the first filter cycle will start 12 hours after power has been restored. TROUBLESHOOTING Pumps have started up for one minute on several occasions and "Filter Cycle" indicator is flashing. Our Smart Winter Mode protects your spa from the cold by automatically turning pumps on for one minute several times a day to prevent water from freezing in pipes. The system will reset automatically when water temperature reaches 109°F (43°C). [. . . ] The system will reset automatically when water temperature reaches 109°F (43°C). [. . . ]