Dantherm RCV 320 P2 Basic Manual page 46

46
Error
A B C Error
code
3 R 0 E 3 Bypass damper
does not close as
expected
Bypass damper
Reduced heat re-
covery due to low
exhaust airflow
3 R 0 E3 Bypass is closed,
but supply air
temperature
is lower than
expected
The airflows are
out of balance.
There is more
extract air than
supply air
INSTALLATION & SERVICE MANUAL FOR PROFESSIONALS
Possible cause
Selector switch
position A:
Bypass is closed,
but supply air
temperature
is lower than
expected
Selector switch
position B:
Bypass is closed,
but exhaust air
temperature
is higher than
expected
A clogged extract
air filter
Poor balancing of
airflows
An extract fan in
the bathroom is
creating negative
pressure in the
house
An extract air fan
in the kitchen is
creating negative
pressure in the
house
A cooker fan is
creating negative
pressure in the
house
A clogged supply
air filter
Poor balancing of
airflows
Maintenance and care: Error list
Action
Reset
required
Check if Bypass is Automatic reset
enabled in PC Tool if efficiency is
high enough for
Check if bypass is
30 seconds
blocked
Check the mechan-
ical connection
between the bypass
actuator and the
bypass valve
Check electrical
connection between
controller and bypass
Check controller
output
Change filters Automatic reset
if efficiency is
high enough for
Adjust the system
30 seconds
Remove extract
fan from the bath-
room
and instead
connect the extract
air from the bath-
room
to the fan
system
Ensure that warm
make-up
air can reach the
cooker hood.
If this is not
possible, open a
window/door while
the cooker hood is
running
Contact your flue/
stove supplier for
information about
safety precautions
Change filters
Adjust the system