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(4)Mode–Ready and 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 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.
Circulation Mode (under Pumps, for other circulation modes)
If the spa is configured for 24HR circulation, the heater pump generally 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.
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