Legacy Whirlpool LW 524 Owner's Manual page 47

Spa Controls - 120V Models
MODE
Mode is changed by pressing the Warm or Cool button, then pressing the Light button.
Standard mode is programmed to continuously maintain the desired temperature. Note that the
last measured spa temperature displayed is current only when the low speed of Pump 1 has been
running for at least 2 minutes. "St" will be displayed momentarily when you switch into Standard
Mode. While in Standard mode, the system will activate the heater pump (Pump 1) approximately
every 30 minutes for 1 to 3 minutes to get an updated water temperature so that it can continu-
ously maintain the desired set temperature. This is not performed while in Economy or Sleep
modes.
Economy mode heats the spa to the set temperature only during filter cycles. "Ec" will display solid
when temperature is not current, and will alternate with temperature when temperature is current
(if the heat pump or Pump 1 has ran within the last 30 minutes).
Sleep mode heats the spa to within 20°F (10°C) of the set temperature only during filter cycles.
"SL" will display solid when temperature is not current, and will alternate with temperature when
temperature is current (if the heat pump or Pump 1 has ran within the last 30 minutes).
PRESET FILTER CYCLES
The first filter cycle begins 6 minutes after the spa is energized. The second filter cycle begins 12
hours later. Filter duration is programmable for 2, 4, 6, 8 hours or for continuous filtration (indi-
cated by "FC "). The default filter time is 2 hours.
To program, press Warm or Cool then Jets. Press Warm or Cool to adjust. Press Jets to exit pro-
gramming. At the beginning of each filter cycle, all pumps are activated for a short period of time
to purge all lines within the spa and circulate water throughout the entire spa. The only effect filter
duration has is: 1) During the filter, the low-speed of Pump 1 never turns off, and 2) In Economy
and Sleep Modes, heating only occurs during the filter cycle.
FREEZE PROTECTION
If the temperature sensors detect a drop to below 44°F (6.7°C) within the heater, the pump will
automatically activate to provide freeze protection. The equipment stays on until 4 minutes after
the sensors detect that the spa temperature has risen to 45°F (7.2°C) or higher. During freeze pro-
tection the heater may not be activated.
DO NOT DIVE. DO NOT DIVE. 101 45