Legacy Whirlpool LW 524 Owner's Manual page 54

Spa Controls
Mode - Ready & Rest
In order for the spa to heat, a pump needs to circulate water through the heater. The pump that
performs this function is known as the "heater pump."
The heater pump can be either a 2-Speed Pump 1 or a 24 hour circulation pump.
If the heater pump is a 2-Speed Pump 1, Ready Mode will circulate water every 1/2 hour, using
Pump 1 Low, in order to maintain a constant water temperature, heat as needed, and refresh the
temperature display. This is known as "polling."
Rest Mode will only allow heating during programmed filter cycles. Since polling does not occur,
the temperature display may not show a current temperature until the heater pump has been
running for a minute or two.
24 Hour Circulation Mode The 24 hour circulation pump operates continuously with the exception
of turning off for 30 minutes at a time when the water temperature reaches 3°F (1.5°C) above
the set temperature (most likely to happen in warm climates or if the set temperature is decreased
below the current water temp to meet this condition). If the spa is configured for 24 hour circula-
tion, the heater pump runs continuously. Since the heater pump is always running, the spa will
maintain set temperature and heat as needed in Ready Mode, without polling.
In Rest Mode, the spa will only heat to set temperature during programmed filter times, even
though the water is being filtered constantly when in Circulation Mode.
READY-IN-REST MODE
READY/REST appears on the display if the spa is in Rest Mode and Jet 1 or Aux pump (if equipped)
is pressed. Upon user activation of the pumps, the system assumes that the spa is being used and
will heat to set temperature. While Pump 1 High can be turned on and off, Pump 1 Low will run
until set temperature is reached, or 1 hour has passed. After 1 hour, the System will revert to Rest
Mode. This mode can also be reset by entering the Mode Menu and changing the Mode.
Main Screen Main Screen
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