2
EN - 14 - For the user
2.4.2 Cleaning the valves (in your dwelling)
The ventilation system may be fi tted with the follow-
ing valves:
Exhaust valve (STB)
Exhaust valve (STC)
Exhaust valve (STV)
Exhaust valve (STK)
Supply valve (STH)
You must clean the valves (at least) twice a year:
1. Remove the valve from the wall or ceiling;
2. Clean the valve in a solution of soap and warm
water;
3. Rinse the valve thoroughly and wipe dry;
4. Place the valve back WITH EXACTLY THE SAME
SETTING (and IN THE SAME HOLE);
5. Repeat this procedure for the other valves.
About the valve settings...
The installer will have set all the valves to ensure
the optimum performance of the ventilation system.
Therefore, do not change the setting of the valves.
After cleaning, make sure that all valves are
placed back with the same setting (and in
exactly the same ventilation hole in the wall
or ceiling) AT ALL TIMES. Otherwise, system
performance will be compromised.
The ventilation air is supplied and discharged by
means of valves. Gaps under doors in the dwelling
ensure that the air fl ows in the right direction. In or-
der to ensure that the correct ventilation volumes are
maintained in the rooms, the following must be ob-
served:
•
Do not seal the gaps;
•
Do not change the settings of the valves;
•
Do not replace the valves with one another.
2.5 Malfunctions
Malfunctions in the ComfoAir are reported as follows:
• The malfunction alert appears on the display.
• The malfunction alert appears on the CC Ease
panel;
• The malfunction indicator on the 3-position
switch lights up;
A concise explanation of these methods of reporting
malfunctions is given in the paragraphs below.
2.5.1 Malfunction alerts on the digital
operating device
In the event of a malfunction, the corresponding mal-
function code will be displayed on the digital operat-
ing device of the ComfoAir. The digital operating de-
vice will always show an 'A' or an 'E', with a number
as a suffi x. Please refer to the malfunction overview to
fi nd out the meaning of the relevant malfunction alert.
