Table of Contents
Advertisement
Maintenance and care: Trouble shooting
A B
3
3
Error
C
Fault
code
R
0
E 3
By-pass damper
does not close as
expected
By-pass damper
Reduced heat
recovery due to
low extract flow
R
0
E3
Bypass is closed,
but supply tem-
perature is lower
than expected
Flows are not
balanced. There
are much more
extract air than
supply air
Action
Possible cause
required
Switch
Check if bypass is
enabled in PC-Tool
position A:
Bypass is closed,
Check if bypass is
but supply
blocked
temperature
Check mechani-
is lower than
cal connection
expected
between bypass ac-
tuator and bypass
Switch
valve
position B:
Bypass is closed,
Check electric con-
but exhaust
nection between
temperature
controller and
is higher than
bypass
expected
Check controller
output
Dirty extract air
Change filters
filter
Poor balancing
Adjust the system
of the air flows
A bathroom
Remove the extract
extract fan is
fan from the bath-
creating under-
room
pressure in the
and instead
house
connect the extract
air from the bath-
room
to the ventilation
system
A kitchen
Create heated
extract fan is
replacement
creating under-
air for the
pressure in the
extraction hood. If
house
not possible open a
window/door while
the extraction hood
is running
A stove fan is
Contact supplier
creating under-
of chimney/stove
pressure in the
to secure safety
house
precautions
Dirty supply air
Change filters
filter
Poor balancing
Adjust the system
of the air flows
Reset
Automatic reset
if efficiency is
high enough
for 30 seconds
Automatic reset
if efficiency is
high enough
for 30 seconds
33
Hide quick links:
Advertisement
Table of Contents
