Bard TCS22-***-003 - Manual (Page 38)

2100-444-003A
Page 32
on the screen. Press the <F1> key. Use the <Up> key to highlight the dashes next to the alarm item to be
acknowledged. Press <Enter> to enter edit mode.
If you do not have authority to acknowledge alarms the dashes will not be highlighted. An
Engineer authority level is required to override outputs. If you have authority to dashes will be
highlighted after pressing the <F1> key.
There are five (5) actions now available, NOP = No Operation, ACK = Acknowledge the alarm,
CRAM = Clear alarm ram, ACKA = Acknowledge all alarms, CAF = Clear alarm flag. Use the <Up>
and <Down> keys to choose ACK to acknowledge the alarm. Once the desired action is displayed press
the <Enter> key to initiate the action. If the action was accepted the screen will show an A next to the
alarm type.
The display will then revert to the list item display and within 10 seconds the new action will be
updated.
5.3.3.1 SPACE TEMP ALARM
The space temperature alarm item will show one of four different alarm messages. A No alarm
message indicates that the Zone Temperature Sensor is functioning normally. A Fault alarm message
indicates that the Zone Temperature Sensor is sensing a value above 120 F
o or below -20 F o . This
probably indicates a faulty sensor. When a Space Temperature Fault alarm is detected the Zone
Temperature value defaults to 74 degrees effectively shutting down heating and cooling until the sensor
is replaced.
An Alarm (High) or Alarm (Low) message indicates that the sensor is sensing a temperature
above or below, respectively, the High Temperature Alarm Setpoint or Low Temperature Alarm
Setpoint.
The Fault alarm takes precedence over the Alarm (High) or Alarm (Low) message. If the Sensor
is failed high or low the Alarm (High) or Alarm (Low) alarms will also be activated but only the Fault
alarm will be displayed because this is the actual condition causing the other alarms.
These are all self-clearing alarms and will reset themselves when the alarm condition no longer
exists. This is a critical alarm.
5.3.3.2 SPACE HUMIDITY ALARM
The Space Humidity Alarm item will show one of four different alarm messages. A No alarm
message indicates that the Zone Humidity Sensor is functioning normally. A Fault alarm message
indicates that the Zone Humidity Sensor is sensing a value above 99 % RH or below 2 % RH. This
probably indicates a faulty sensor. When a Space Humidity Fault alarm is detected, the Zone Humidity
value defaults to 50 % RH until the sensor is replaced.
An Alarm (High) or Alarm (Low) message indicates that the sensor is sensing humidity above or
below, respectively, the High Humidity Alarm Setpoint or Low Humidity Alarm Setpoint.