Carrier PC211 Start-Up, Operation And Maintenance Instructions Manual page 58

mode, and the control will accept modifications from any CCN interface or module
(with the proper authority), as well as the LID. The PIC will use the CCN time sched-
ule to determine start and stop times.
Alarms and Alerts
Alarm (*) and alert (!) status are indicated on the Status tables. An alarm (*) will shut down
the compressor. An alert (!) notifies the operator that an unusual condition has occurred. The
machine will continue to operate when an alert is shown.
Click here for Figure 13 — LID Default Screen
Click here for Figure 14 — LID Service Screen
Alarms are indicated when the control center alarm light (!) flashes. The primary alarm
message is viewed on the default screen and an additional, secondary, message and
troubleshooting information are sent to the Alarm History table.
When an alarm is detected, the LID default screen will freeze (stop updating) at the time of
alarm. The freeze enables the operator to view the machine conditions at the time of alarm. The
Status tables will show the updated information. Once all alarms have been cleared (by
pressing the RESET softkey), the default LID screen will return to normal operation.