5.0 Troubleshooting
Symptom Cause How to solve
Alarm beeper
active on Air
Dial remote
control + text in
display.
The cause of the alarm can be
read on the display. Press or
rotate dial to enter alarm screen.
The alarm screen will indicate
what type of alarm is present.
Depending on the alarm.
Follow the instructions below.
End with OK for alarm on Air Dial
remote control.
Alarm: Filter
error
Air filters are dirty. Exchange air filters, see chapter 3.1
for instructions
Alarm: Battery
low
Battery voltage is too low in the
Air Dial remote control.
Replace batteries (4 x AAA) in Air
Dial.
See instructions in Chapter 3.2.
Alarm: No con-
nection to CCM
Communication between the Air
Dial remote control and the CCM
module has failed. The cause is
typically that an obstacle has
been created in the vicinity of
the CCM module. An obstacle
could be steel piping, other steel
objects, or insulation material
clad with aluminum foil. An-
other cause can be other wire-
less appliances that does not
conform to wireless standards
(radio noise).
If an obstacle has been identified,
move it, if possible. If this is not
practical, relocate the CCM module
to a better location with a free ‘line
of sight’. If the error occurs due to
other wireless appliances in your
house, try switching these off in
turn to identify the faulty device.
If none of the above helps, please
contact your installer.
Alarm: No
connection via
modbus
The cable from the CCM module
to the unit has been unplugged
or is defective.
Check cable and reconnect if neces-
sary. If cable is connected, but error
still occurs - contact your installer.
Alarm: Room air
too cold
The central heating system in
the building is not supplying
heat. The room temperature
is dropping, so the unit turn
off to reduce involuntary heat
loss. Alarm active if the Air Dial
measures a room temperature
below +10°C
Check if heating system is function-
al. If the problem can not be solved,
contact the plumber/installer
responsible for your heating system.
When the error on the heating
system has been remedied, the
ventilation system should be shut
down and power switched on again
to resume normal operation. The
power can be disconnected by
pulling the power cable out of the
system.
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