nilan Compact P, User Manual

Page: 40 / 48

40
Central heating
Problems and solutions central heating
Problem Possible cause Solution
The telestates call for heat, but the heat
pump does not start
During the spring and autumn transition
periods, some space telestates may call
for heat, but the heat pump does not
start.
This may be because the temperature in
the extract air is warm enough compared
to the temperature set in the control
panel. That is, the exhaust air is an aver -
age of the room's room temperatures, as
some rooms are hot and others are cold.
Since the ventilation section considers
the average temperature of the house to
be high enough, it blocks the heat pump
from running. This does it to save energy
and to prevent the ventilation part and
the heat pump part from counteracting
each other.
If you still want to heat in some rooms,
despite the average temperature of the
house being warm enough, you can acti -
vate this function below: Settings / Cen -
tral heating in the Menu item: Cooling and
heating at the same time
This means that the cooperation
between the ventilation part and the
heat pump part ends, and if there is a
need for heat in some rooms, the heat
pump will start even if the ventilation
part detects that the house is warm
enough.
El-supplementation is turned on much or
always
The heat pump will not work effectively,
which may be due to various reasons.
- Check that there is no ice in the evapo -
rator surface in the outdoor unit. It pre -
vents the air from getting through. Make
a manual defrost.
- Check that the evaporator surface in
the outdoor unit is not stopped with
leaves and other debris that can prevent
the air from getting through. Clean the
evaporator surface.
- Check that the hoses between the out -
door unit and the indoor unit are properly
insulated so that there is no excessive
heat loss.
- Check that there is a proper flow in the
circuit between the outer part and the
inner part.
AIR has a large power consumption One must expect that electricity con -
sumption in the first year will be greater
than expected. This is quite natural as
the house must dry out.
The higher humidity in the first year
means that it costs more energy to heat
the house.
This may also be because the heat pump
does not run optimally for various rea -
sons.
- Check that there is no ice in the evapo -
rator surface in the outdoor unit. It pre -
vents the air from getting through. Make
a manual defrost.
- Check that the evaporator surface in
the outdoor unit is not stopped with
leaves and other debris that can prevent
the air from getting through. Clean the
evaporator surface.
- Check that the hoses between the out -
door unit and the indoor unit are properly
insulated so that there is no excessive
heat loss.
- Check that there is a proper flow in the
circuit between the outer part and the
inner part.