U
SER
’
S
AND
I
NSTALLER
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S
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ANUAL
O
PERATION
Version: 4.0 (23-08-2007)
31
3.4
Display messages
3.4.1 Dirty-filter indicator
The number of ‘full’ triangles indicates the filter’s service life:
the more triangles, the longer the service life.
When the message
appears, the filter’s maximum life
has lapsed: you should then clean or replace it (see section
5.1
).
These messages will appear only if this function is enabled at
the manager’s level (see section
4.2.3
).
3.4.2 External controls
The
symbol in the display indicates that the air curtain is
switched On or Off by a signal from an external control to the
control panel. In that case, the
key does not work.
The
symbol indicates that an external control input signal is
active for a connected unit.
The working of the unit depends on the external control set-
tings (see section
4.5.3
). Some functions may not work, or
only to a limited degree.
If settings are changed by the external control, the display will
show the actual settings.
3.4.3 Faults
The message
indicates that there is a fault. Next to
it, the fault code is displayed.
Warning:
w
Some faults may cause damage or physical injury if
disregarded. If
appears, alert the installer
immediately, or refer to section
6.4
.
Note:
n
The fault code will disappear when you press any key.
The message
will however remain visible as long
as the fault is not corrected.
If an fault code is displayed without the message
, the
fault occurred in your absence, and has been resolved in the
meantime. You need not undertake action unless the fault
keeps returning.
fault code