
19
20
Fig. 6.c
ENGL
ISH
µAD +030220465 - rel. 1.1 - 15.12.2010
6.5 Alarms management
The µAD displays the states of the chiller alarm.
When an alarm occurs, the fl ashing ALARM symbol (20) is shown on the display. If the µAD has a buzzer
and En02=2, the buzzer will emit a noise. The buzzer can be silenced by pressing the TEMP button for 3
seconds. The alarm disappears when the cause is removed.
The sequence of the warnings relative to all active alarms are shown on the display, see table below:
Table of alarm codes
Codes
Name
Description
Ach
Chiller global alarm
Presence of a general active alarm in the µChiller,
display continues while the alarm persists
Ahu
Humidity alarm
Indicates a fault in the
µAD humidity probe
AtE
Temperature alarm
Indicates a fault in the
µAD temperature probe
CEr
Confi guration error
Presence of a confi guration error
Och
Chiller off line
The µChiller results disconnected from the
communication serial with the µAD terminal. The
alarm is displayed until the connection has been
restored. When it appears, check that the µChiller
is powered and connected correctly to the µAD
(Ad01).
UEr
Unrecognised peripheral
It signals that the device connected tot he com-
munication serial with the µAD terminal results
different to a µChiller
Tab. 6.2
Specifi c alarm codes table with µAD connected to µC
2
SE
µAD connected to µC
2
SE, also allows to display other types of alarms, see table below:
Indication of alarms on
µAD display
Indication of alarms on
µC
2
SE display
A12
A1...2
E00
E1...8
ESP
ESP
FL
FL
HC
HC1...4
HP
HP1...2
LP
LP1...2
T
TP&TC1&TC2
Tab. 6.3
For more detailed information regarding the alarms, consult the µC
2
SE manual.
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