Dantherm RCV320 P1 Benutzerhandbuch Seite 52

A B C Error
code
3 R 0 E3
4 R 1 E4
52
Fault Potential cause
Bypass damper does Switch position A: by-
not close as expec- pass is closed, but
ted supply air temperat-
ure is lower than ex-
pected
Switch position B: by-
pass is closed, but ex-
haust air temperature
is higher than expec-
ted
Bypass damper Extract air filter soiled Changing the filter
Poor adjustment of
Reduced heat recov-
the airflows
ery due to low ex-
tract airflow
A bathroom extract
air fan creates a neg-
ative pressure in the
dwelling
A kitchen extract air
fan is creating negat-
ive pressure inside the
dwelling
A stove fan creates
negative pressure in-
side the dwelling
bypass is closed, but Supply air filter is
supply air temperat- soiled
ure is lower than ex-
Poor adjustment of
pected
the airflows
Airflows are not bal-
anced. There is
much more extract
air than supply air
Extract air temperat- Temperature sensors
ure sensor (T1) are not mounted cor-
rectly
Control board meas-
Resistance in one of
ures that temperat-
the temperature
ure sensor is open or
sensors is too low or
short-circuited
too high
Resistance in temper-
ature sensor is OK
INSTALLATION AND SERVICE MANUAL FOR PROFESSIONALS
Maintenance and troubleshooting: Troubleshooting
Action required
Check whether bypass is
activated in PC tool
Check if bypass is
blocked
Check mechanical con-
nection between bypass
actuator and bypass
valve
Check electrical connec-
tion between control unit
and bypass
Check control unit output
Adjust the system
Remove the extract air
fan from the bathroom
and connect the extract
air from the bathroom to
the ventilation system in-
stead
Provide heated fresh air
for the extraction hood. If
this cannot be achieved,
open a window/door
while the extraction hood
is running
Contact the fireplace/
stove supplier to take
safety precautions
Changing the filter
Adjust the system
Mount temperature
sensor(s) correctly
Replace temperature
sensor
Replace control board
Reset
Automatic reset
when efficiency is
high enough for
30 seconds
Automatic reset
when efficiency is
high enough for
30 seconds
Automatic reset if
the temperature is
within the normal
range for
30 seconds