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Operation Check heater cable insulation integrity using megger as per heater cable manufacturer recommendations prior to energizing the Local Control Panel. Energizing the Local Control Panel Turn the Control Logic Circuit Breaker on. The Network Controller and Input / Output Modules (if any) green Power On Light(s) will illuminate. Wait 10 seconds for Network Controller to initialize. Red Signal Failure Lights will illuminate to indicate no communications between Network Controller and Remote Terminals. Turn, one by one, individual heat tracing cable circuits breakers on. The Signal Failure Alarms for each zone should disappear, as the circuit breakers for these zones are turned on. If the system is turned on during extreme cold weather, amber Low Temperature Lights will illuminate. As the heater cable warms up the pipe, the Low Temperature Alarm should disappear. The Low Temperature Alarm is doubled with Sensor Loss (temperature sensor) Alarm. If the temperature sensor is not connected to the Remote Terminal, Sensor Loss Light will blink rapidly. Green Heater Control On Light is doubled with High Temperature Alarm (if set at factory per customer specifications). Should the high temperature alarm set point be reached, the High Temperature Alarm Light will blink rapidly.