6.8 Restarting the CPU
To start the CPU using different memory configurations, you can use the warm or cold start functionality.
Warm start: Clears the alarm verification tally trouble and restarts the control unit, but preserves the control unit’s non-volatile memory,
including time and date information, historical logs, and all currently disabled points.
Cold start: Re-initializes the control unit’s non-volatile memory, clears the historical logs and disabled points, but saves the time and date
information.
To begin a warm start, complete the following steps:
1. Make sure the DIP switch SW4-8 is set to the off position.
2. Perform the power cycle or press the SW0 switch on the system board to restart the control unit in warm restart mode.
To begin a cold start, complete the following steps:
1. Change the position of DIP switch SW4-8 to the on state.
2. Perform the power cycle or press the SW0 switch on the system board to restart the control unit.
3. After the control unit restarts, perform the power cycle or press the SW0 switch again to restart the control unit in cold restart
mode.
4. After the cold restart is done, set the switch SW4-8 back to the off state and perform the power cycle or press the SW0 switch to
restart the control unit and set it back to warm restart mode.
page 20 579-1403 Rev A
2004 Foundation Series Fire Alarm Control Unit Operation Guide