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32
See below list for a full description:
Error
A B
C
Fault
code
-
Y
1
-
Filter alarm
1
R
1
E 1
Exhaust air fan
No rotation
speed (tacho)
feedback from
the exhaust air
fan
Exhaust air fan
cannot run the
desired RPM
2
R
1
E 2
Supply air fan
No rotation
speed (tacho)
feedback from
the supply air fan
Supply air fan
cannot run the
desired RPM
Maintenance and care: Trouble shooting
Action
Possible cause
required
Filter period
Unmount filters
expired
and examine for
dirt
Change filters and
reset alarm
Filters are
Extend the filter
not dirty, so
timer period
filter period is to
short
Filters are dirty
Change filters and
reset alarm
Filters are very
Change filters and
dirty, filter pe-
reset alarm
riod is to long
Shorten the filter
timer period
Exhaust air fan
Connect Exhaust air
power cable not
fan power cable
connected
Exhaust air fan
Connect Exhaust air
control cable
fan control cable
not connected
Exhaust air fan
Replace Exhaust
does not work
air fan
Fan speed
Lower fan speed
setpoint is too
setpoint
high
Fan is defect
Replace fan
Supply air fan
Connect Supply air
power cable not
fan power cable
connected
Supply air fan
Connect Supply air
control cable
fan control cable
not connected
Supply air fan
Replace Supply air
does not work
fan
Fan speed
Lower fan speed
setpoint is too
setpoint
high
Fan is defect
Replace fan
Reset
Reset alarm and
reset filter by
pressing and
holding alarm
button for 5
seconds
On wireless
remote press
and hold center
button for 10
seconds
Same proce-
dure can be
used to reset
filter before
alarm.
Manual reset by
pressing alarm
button on foil
panel or by
powering unit
off/on
Automatic
reset after 140
seconds, but
alarm will ap-
pear again if
problem is still
there
Manual reset by
pressing alarm
button on foil
panel or by
powering unit
off/on
Automatic
reset after 140
seconds, but
alarm will ap-
pear again if
problem is still
there
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