Spa Behavior; Freeze Protection - Legacy Whirlpool LW 524 Owner's Manual

Spa Controls

Spa Behavior

PUMPS
Press JETS or AUX button once to turn the pump on or off, and to shift between low and high
speeds if equipped. If left running, the pump will turn off after a time-out period.
If the spa is in Ready Mode, Pump 1 low may also activate for at least 1 minute every 30 minutes
to detect the spa temperature (polling) and then to heat to the set temperature if needed. When
the low-speed turns on automatically, it cannot be deactivated from the panel, however the high
speed may be started.
Circulation Pump
The 24 hour circulation pump operates continuously with the exception of turning off for 30 min-
utes at a time when the water temperature reaches 3°F (1.5°C) above the set temperature (most
likely to happen in warm climates).
FILTRATION AND OZONE
On non-circulation systems, Pump 1 low and the ozone generator will run during filtration. On 24
hour circulation systems, the ozone will run with the 24 hour circulation pump.
The system is factory-programmed with two filter cycles that will run 10 minutes after power-up.
The filter duration is programmable.
At the start of each filter cycle, Pump 2 (if there is one) will run briefly to purge its plumbing to
maintain good water quality.

FREEZE PROTECTION

If the temperature sensors within the heater detect a low enough temperature, then the pump(s)
automatically activate to provide freeze protection. The pump(s) will run either continuously or
periodically depending on conditions. 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 protection the heater will not be activated.
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DO NOT DIVE. 102