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33. Alarms
The alarms enable the detection of one or more abnormal conditions during the operation of the controller. You can see more
alarms by accessing the dedicated alarms pages.
To access the alarms pages, proceed as follows:
Press the
and
buttons together to access the main menu. The following screen displays:
CLK
yMdH
(model
AHU-xxCSx1
) or
AL
noAL
(model
AHU-xxSSx1
)
For models with a clock, press the
or
button until the following screen is displayed:
AL
.
Press the button to access the alarms pages.
AL
noAL
.
Display A
displays the alarms page and
display B
displays an alarm message (see the table below) or if there is no alarm, the
message
noAL
appears.
Press the
button to see more alarms that may be present. Press the
button to return to the list of alarms.
Alarms table
Message
Alarm type
Action on control
Icons displayed
noAL
No alarm
-
-
CoF
Configuration not valid
Outputs for valves, electric heater, humidifier
and dehumidifier are deactivated
FIA
Severe filter
All control is stopped.
.
FI-
General filter
Just an indication, no effect on control.
.
FIS
Supply filter
Just an indication, no effect on control.
.
FIE
Extractor filter
Just an indication, no effect on control.
.
AL-
General
Just an indication, no effect on control.
.
ALC
Condensation
Only operates in cooling.
Humidifier OFF.
Cooling valve closed.
.
ALF
Frost protection
Dehumidifier OFF.
Humidifier OFF.
Fans OFF.
Free heating or free cooling OFF.
Heating valve opened to the maximum.
Modulating cooling valve positioned based on
the parameter
191
.
.
AFC
Frost protection heat
exchanger
If
186
=0, reduction of supply fan speed.
If
186
=1, bypass open.
If
186
=2, activation of pre-heating heat
exchanger resistance.
If
186
=3 reduction of supply fan speed and
bypass open
If
186
=4 reduction of supply fan speed and acti-
vation of pre-heating heat exchanger resistance
.
EOt
Internal sensor has an error
If used as a regulation sensor, the elements
being controlled are disabled.
.
EO1
AI1 sensor has an error (*)
If used as a regulation sensor, the elements
being controlled are disabled.
.