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NOTE: The heat pump will not run when the Remote position is selected
and there is no remote control system attached.
Defrost Switch: Prevents heat pump operation if ambient air temperature falls below a
predetermined safe minimum (approximately 42-48° F, based on humidity). The compressor will
shut OFF but the fan will continue to run.
Delay Timer: Prevents compressor from short cycling, which could damage or destroy the
hermetic motor/compressor. Upon water temperature control satisfaction, or other circuit
interruptions, this solid state device will prevent compressor restart for approximately 5 minutes.
Refrigerant Low Pressure Control: Stops the compressor and fan if refrigerant suction (low
side) pressure falls too low as a result of a malfunction or loss of charge.
Indicator Lamps: There are 3 indicator lamps located on the unit control panel:
• Power (red lamp): When lit, indicates power is applied to the unit.
NOTE: The heat pump will not run when the Remote position is selected
and there is no remote control system attached.
• Heat Demand (green lamp): When lit, indicates the actual water temperature is below the
target water temperature.
• Water Pressure (orange lamp): When lit, indicates normal water flow.
V. System Start-Up
1. Verify that the Power lamp is ON, the pool pump is running and water is circulating properly.
2. Verify that the control panel Spa-Remote-Pool switch is in the Remote (OFF) position; see
the figure below.
3. Turn the selector switch to Pool to turn the unit ON and raise the thermostat setting above the
current water temperature. At this time all three lamps should illuminate and the fan should
start to run.
Control panel
Indicator lamps
When all 3 lamps are
lit, operation is normal.
Control
panel
Spa and Pool
thermostats