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interruption, this solid state device will prevent compressor restart for approximately 5 minutes.
Upon power failure or interruption, a 6 to 8 minute delay will also be initiated.
Refrigerant Low Pressure Control: Stops the compressor if refrigerant suction (low side)
pressure falls too low as a result of a malfunction, loss of charge or extreme cold conditions.
Indicator Lamps: There are 6 indicator lamps located on the unit control panel:
• Power (amber lamp): When lit, indicates power is applied to the unit.
NOTE: The heat pump will not run when the Remote position is selected on
the Pool/Spa selector switch and there is no remote control system attached.
• Water Flow (green lamp): When lit, indicates normal water flow.
• Heat Demand (green lamp): When lit, indicates the actual water temperature is below the
target water temperature.
• Compressor Delay Active (amber lamp): Under normal operation, when lit, indicates
compressor anti-short cycle timer is active. The fan will run but the compressor will be
OFF for 6 to 8 minutes.
• Defrost Active (red lamp): When lit, indicates unit is in defrost mode. Defrost mode occurs
when ice starts to form on the outside coil. The fan will continue to run but the compressor
will stay OFF (not heating) until weather conditions improve.
• Low Pressure (red lamp): When lit, indicates failure in the refrigeration circuit. When this
lamp is ON, service is required. Call the number shown on the cover of this manual.
When any combination
of these 5 lamps is lit,
operation is normal.
When this
lamp is lit,
unit requires
service.
Control panel
Indicator lamps