Indicator Lamps: There are 6 indicator lamps located on the unit control panel:
Control panel
Indicator lamps 
When this lamp is lit, unit requires service.
When any combination of these 5 lamps is lit, operation is normal.
•Power (amber lamp): When lit, indicates power is applied to the unit.
•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
•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 in the CONTACT INFORMATION at the front of this manual.
V.Initial Start-Up and Check
1.Verify that the Power lamp is ON and that the pool pump is running and circulating properly.
2.Verify that the control panel
3.Turn the control switch to either Pool or Spa to turn the system ON and raise the thermostat setting above the current water temperature. At this time the 2 green lamps should illuminate. The fan and compressor should start up and run simultaneously.
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