Zehnder Comfocool Serie Manuel De L'utilisateur page 13

screen. Consult the operating panel manual for
instructions.
• Also check whether the Comfortunit and the heat
exchanger are receiving power. On the side of
the Comfortunit is a plug socket. Check whether
the plugs are fi rmly fi tted in the sockets.
• If the malfunction reoccurs, please contact a fi t-
ter specialized in ventilation and cooling tech-
nology.
6.2. My Comfortunit does not switch on
If your Comfortunit does not switch on like you ex-
pected, then please check the following:
• Is the ventilation level correctly set? The Com-
fortunit will not be activated in the Absent set-
ting.
• Is the comfort temperature correctly set? Only
when the temperature in the room in which the
operating panel is located is higher than the set
comfort temperature will the system be activat-
ed.
• Is it cold outside? Active cooling is not activated
when it is cold outside (lower than 12˚C).
• Is it colder outside than inside? When it is colder
outside than inside, the system employs the by-
pass to ensure energy-effi cient cooling. For fur-
ther information, see section 3.
• Is it autumn or winter? The system does not use
the active cooling function in seasons in which
the heating is often on. However, if you still re-
quire cooling, then set the comfort temperature
to "COOL".
• Did you unblock the Comfortunit's activation? A
button for this purpose can be found in the com-
fort temperature settings menu. Only when this
setting is set to "Artic Auto" will the Comfortunit
be activated.
• Has the Comfortunit just been deactivated? For
safety reasons, it takes fi ve minutes before the
Comfortunit is reactivated.
• Does the operating panel register the Comfortu-
nit? This will be visible in the ComfoControl Luxe
main screen: when the Comfortunit is registered,
you will see a button in the comfort temperature
settings screen stating "Artic Auto/Artic OFF".
If the Comfortunit is not registered, remove the
heat-recovery unit and Comfortunit plugs from
the socket. Reconnect the Comfortunit fi rst and
then the heat-recovery unit.
6.3. My Comfortunit switches on but
my dwelling is not being cooled
If your dwelling does not cool off (suffi ciently) de-
spite the cooling being activated, then you can do
the following:
• Set the ventilation to level 3. The more you venti-
late, the greater the volume of cooled air is sup-
plied to the dwelling.
• Fit sunblinds. The sun is an extremely power-
ful source of heat. If your home receives a lot of
sunlight, it will warm up very quickly. This source
of heat might well be stronger than the cooling
effect created by your cooling system.
• Contrary to an air conditioner, the Comfortunit
cools your entire home. The Comfortunit is ca-
pable of reducing the indoor temperature to a
few degrees below what it would be, were the
Comfortunit turned off. In summer, we recom-
mend setting the comfort temperature a couple
of degrees lower than the outdoor temperature.
6.4. Irregular ventilation
If you have set the ventilation level to 1, the Comfortunit
will occasionally increase the throughput of the heat-re-
covery unit to keep the cooling components at an accept-
able temperature. If you prefer not to use this function,
then set the ventilation level to 2 or 3.
3