w LWZ 5-8 CS Premium / 17
- the air volumes have been adjusted and checked according to
the system design.
If you notice dragging noises when the fan or heat pump are in
operation, take the appliance out of use immediately and notify
your qualified contractor.
If dragging noises occur during heat pump operation, the exhaust
air fan may be the cause. During shipping, the fan may slightly
move in relation to the air nozzle. This may result in dragging
noises. If necessary, the exhaust air fan should be aligned as part
of the commissioning work.
Contamination of the outdoor air filter can lead to higher noise
emissions. The outdoor air filter is fitted downstream of the
cross-countercurrent heat exchanger. The outdoor air filter must
be replaced by a qualified contractor.
6.8 The required flow temperatures are not
reached, particularly during drying out
When drying screed, output levels will be required that are far
above those necessary for standard heating operation. It can the-
refore take a relatively long time before, for example, the low end
temperature is reached. However, the correct temperature curve
for drying out is ensured because the next stage in every case is
not started until the default temperature for the current step has
been reached. In case of all other faults, please always notify your
qualified contractor.
6.9 The accommodation is always too cold
Increase the low end temperature of the heating curve. Raise the
temperature by the number of degrees you require to obtain a
comfortable temperature.
6.10 The accommodation is always too hot
Reduce the low end temperature of the heating curve by the
number of degrees the room temperature exceeds a comfortable
temperature.
6.11 The accommodation is too cold in winter
If the temperature of your home in spring and autumn is OK,
but the rooms do not become warm enough when the outside
temperature drops sharply (-10°C), increase the gradient of the
heating curve. This means it will become slightly warmer in spring
and autumn. You should therefore slightly lower the low end tem-
perature.
Another reason might be the dual mode point. Increasing the
dual mode point, however, can lead to high energy consumption.
If sound-reduced night mode is activated, in rare cases there may
not be enough heating output available at low outside tempera-
tures. Change the value of the „DUAL MODE POINT“ parameter.
6.12 The accommodation is too hot in winter
If your heating system produces too much heat when temperatures
drop sharply, reduce the gradient of the heating curve. This means
your home will become slightly colder in spring and autumn. You
should therefore slightly raise the low end temperature.
6.13 The accommodation is too cold in spring and
autumn
One possible cause may be that summer mode is enabled and that
central heating is off, as a result. Switch the appliance to manual
mode or ask your qualified contractor to change the standard
settings.
If the room temperature in spring and autumn (10°C) is too low,
reduce the gradient and increase the low end temperature.
6.14 The accommodation is too hot in spring and
autumn
Increase the heating curve gradient slightly and reduce its
low end slightly.
6.15 The accommodation is too hot in summer
Stop summer mode and activate passive cooling, if required.
6.16 Air quality is too poor
Select a higher fan stage.
6.17 The air in winter is too dry
Select fan stage 1.
Activate the humidity correction.
When going away, switch the appliance to reduced ventilation.
You can set a fan program for this. Here you set the time during
which the appliance runs in day mode. For the rest of the time,
the appliance runs at the fan stage that you set in the „NIGHT
STAGE“ parameter.
If you cannot remedy the fault, notify your qualified contractor.
To facilitate and speed up your request, provide the number from
the type plate (000000-0000-000000).
1
D0000075599
1 Type plate
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