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View alarms
Alarms may be viewed when the alerting icon
is flashing.
1. On the main screen, press the alerting icon
button
2. The screen displays the most recent or newest alarm where the alarm code display on line
1
and the alerting icon
is now in steady
3. Press
arrow to view next alarm if there are more than one
4. Press
arrow to display
ESC
, then press
button to return to the main screen
View the alarms in the alarm history folder
1. Follow instructions above to enter the passcode and open the alarm history folder
(AHiF)
.
2. Press
button to access to the alarm history.
3. Press
arrow to display the mnemonic alarm on line
1
and time, month, and day display on line
2
. For example, low temp alarm
(Lt)
displays on line
1
and
09
:
24
and
0706
display on line
2
in sequence. Note that the time, and date recorded in the alarm history is based on
the local real-time-clock if configured after installation.
4. Press
arrow to view next alarm. The controller is able to retain up to
25
events
5. Press
arrow until the screen displays
ESC
, then press
button to return to the main screen or if no action for longer than
60
seconds the screen will be automatically revert to the main screen.
Note:
if no alarms are present then only
ESC
will be displayed in the folder.
There are seven possible alarms (non-latching) detectable by the controller and are indicated on the controller display. All alarms are accessible
locally. If a nVent HOFFMAN network card (RAC module) is used, alarms are also accessible remotely through the Ethernet and USB connection.
Mnemonic Alarm
Description
Cause
Result
Alarm Relay Output
dO
Door open alarm
Enclosure door opens or
not properly close
Compressor and evap fan
turn OFF in duration of
alarm
Closed
S
1
F
Inlet temperature sensor
fault
Inlet temp probe failed
No effect on function,
controller continue
operating as normal using
outlet sensor with setpoint
of
50
F (
10
C)
Closed
S
2
F
Outlet temperature sensor
fault
Outlet temp probe failed
No effect on function but
loss freeze protection
Closed
LA
Malfunction alarm
MALF high pressure switch
opens
No effect on function
Closed
Ht
High temp warning
Enclosure air exceeds high
temp alarm setpoint
No effect on function
Closed
Lt
Low temp warning
Enclosure air drops below
low temp alarm setpoint
No effect on function
–
FA
Frost alarm
Evaporator coil freezes
Compressor and condenser
fan turns OFF for the
duration of alarm. Alarm
clears when the outlet
temperature sensor
reaches
59
F (
15
C)
Closed
