Diagnostics And Troubleshooting; Displaying Alarms; Resetting Alarms; Alarm/Alert Codes - Carrier AquaEdge 19XR Controls Operation And Troubleshooting

DIAGNOSTICS AND TROUBLESHOOTING

The 19XR PIC 5 control system has many fault tracing aid
functions. The local interface and its various menus give access
to all unit operating conditions.
If an operating fault is detected, an alarm is activated. The
alarm code is displayed in the Alarms menu, sub-menus Reset
alarms and Current alarms. The control may record up to 10
current alarms and alerts.
The alarm icon
Displaying Alarms —
terface (see the section Icons on page 13) indicates unit status
as follows:
• A flashing red LED shows that the unit is operating but
there is an alert.
• A steady red LED shows that the unit has been shut
down due to a fault.
The Reset Alarms option on the main menu displays up to
five alarm codes that are active on the unit. Table 17 lists alarm
codes.
Resetting Alarms —
been identified and corrected, the alarm can be reset either au-
tomatically or manually (depending on the type of alarm). See
Table 17 for alarms that are eligible for automatic reset.
In the event of a power supply interrupt, if Auto Restart Op-
tion is set to ENABLE in the Option Configuration menu, the
unit restarts automatically without the need for an external
command.
A manual reset must be run from the main menu via the Re-
on the in- set Alarms Feature.
Once the alarm has been corrected or reset, all information
regarding solved alarms is stored in the Alarm History. Alarm
History will store last 50 alarms even after alarms have been
corrected or reset.
Alarm/Alert Codes —
Table 18 lists PIC 5 alert codes. These do not cause machine
shutdown and are automatically reset when the situation re-
turns to normal.
32
When the cause of the alarm has
Table 16 lists PIC 5 alarm codes.