11User instructions
EN
humidity in the air and the ventilation system is trying
to get rid of it.
If the indoor air is too humid:
1. Make sure the lters are clean and do not need to
be replaced.
• If they are dirty, replace them as instructed in
chapter “Filters” on page 12.
2. Make sure there are no major changes in your
ventilation since the system was designed and
installed.
NOTE: If there are changes in for example the
number of people using the premises and/or
the use of showers and sauna, your ventilation
system may need updating. Contact your
ventilation system designer.
Ventilation is not running
If the ventilation is not working:
1. Make sure that the ventilation unit power switch
(not included in every unit model) is in the ON
position.
2. Make sure that the electric supply is connected.
3. Make sure that the panel input of the device is
connected.
4. Make sure that the fuse is not blown.
If all these are in order and the ventilation is still not
running, contact your service company.
ALARMS
Alarms issued from the ventilation system are shown in
the display. There are three categories of alarms:
Category Indication Symptom
A The error code is
visible in the display.
All units are
stopped.
AB
(fault
tolerant)
The error code
ashes in the display
in 2 second intervals.
The exhaust fan
runs in minimum
speed.
Service Text FILS is visible in
the display.
The service
interval is expired.
Clearing alarms
CAUTION
CAUTION: Do not reset the alarm until you
have resolved the problem causing the alarm.
To clear:
1. Register the alarm code and refer to chapter
”TROUBLESHOOTING” on page 16 to see if the
issue is simple enough to be solved by you.
• If in doubt, contact your ventilation installer.
Code Description Cat. Remark
AL1 Water coil
freezing danger
(return water
sensor).
A ESW model only.
Press any button
for 5 seconds to
acknowledge after
repair.
AL2 Supply air
cold after heat
recovery.
AB Acknowledged
automatically when
supply air warms up.
AL3 Supply air cold. AB Acknowledged
automatically when
supply air warms up.
AL4 Supply air
fan fault
(tachometer).
A Correct fault.
Press any button
for 5 seconds to
acknowledge after
repair.
AL5 Extract air
fan fault
(tachometer).
A Correct fault.
Press any button
for 5 seconds to
acknowledge after
repair.
AL6 Extract air cold. AB Acknowledged
automatically when
extract air warms up.
AL7 Supply air hot. A Switch unit o to
acknowledge.
AL8 Electric after-
heater or
pre-heater
over heating
protection.
A Switch unit o to
acknowledge.
To Next Page
Loading...
