Mode 501Z Depending on system configuration, mode changing may not be available and will be locked in Standard Mode.
Mode is changed by pressing Temp, then Light.
STANDARD Mode maintains set temperature. will be displayed momentarily when you switch into Standard Mode.
ECONOMY Mode heats the spa to the set temperature only during filter cycles. will display when water temp is not current, and will alternate with water temp when the pump is running.
SLEEP Mode heats the spa to within 10°C/20°F of the set temperature only during filter cycles. will display when water temp is not current, and will alt
