OPERATION
Operation
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4.3 Selecting operating modes
When the start screen is activated, the current operating mode
is displayed. If you want to select another operating mode, scroll
with the scroll wheel. This takes you through the list of possible
operating modes. The current choice (list entry) is shown in the
shaded selection field.
Note
To change the appliance to this new operating mode,
confirm with OK.
Note
If the selection field shows “POWER-OFF” behind the op-
erating mode, then the heat pump will not heat or cool
during the blocking time.
The compressor and the internal electric reheating stag-
es are switched off. If a buffer cylinder is installed, the
heating circuit pumps will continue running.
One external heat source can be configured for the block-
ing time (see chapter “SETTINGS / HEATING / EXTERNAL
HEAT SOURCE / BLOCKING TIME EVU”).
WEDNESDAY 12JUN 14 10:23 TIME
OUTSIDE TEMPERATURE
ACTUAL WW TEMPERATURE
27.0 °C
35.0 °C
28.0 °C
ACTUAL RETURN TEMPERATURE
26�04�01�0292
ECO MODE
Since navigation to a new operating mode is always made from the
currently enabled mode, you may need to scroll in an anti-clock-
wise direction. All operating modes, apart from DHW mode, apply
to both heating and DHW.
Standby mode
Frost protection is activated for heating and DHW mode. The set
DHW value is fixed at 10°C, the set heating flow value is calculated
based on a set room value of 5°C.
Application: During prolonged periods of absence, e.g. holidays.
Programmed operation
Heating according to the time switch program (applies to heat-
ing circuit1 and heating circuit2). Changeover between comfort
temperature and ECO temperature.
DHW heating according to the time switch program; changeover
between comfort temperature and ECO temperature.
The remote control is only effective in this operating mode.
Application: When DHW and heating are required.
Comfort mode
The heating circuit (HC) is constantly held at the comfort tem-
perature (HC1 and HC2). DHW heating according to time switch
program.
Application: Low energy houses without setback mode.
ECO mode
The heating circuit is constantly held at the ECO temperature (ap-
plicable to HC1 and HC2). DHW heating according to time switch
program.
Application: During weekends away.
DHW mode
DHW heating according to time switch program. If a time program
is active, the water inside the DHW cylinder is heated to the set
comfort temperature. At all other times, the water is heated to
the set ECO temperature. Frost protection is activated for heating
mode.
Application: The heating season has ended; only DHW should be
provided (summer mode).
Emergency operation
This setting activates the emergency operation.
In heat pumps with an integral 2nd heat source, the NHZ stag-
es (electric reheating stages) of the electric emergency/booster
heater take over DHW and central heating irrespective of the dual
mode changeover point.
For heat pumps with an external 2nd heat source, the external
heat source for DHW or central heating must be set to ON under
SETTINGS / HEATING or DHW. Only then can the operating mode
be selected. The external heat source then takes over operation
for the DHW or central heating function, irrespective of the dual
mode changeover point.
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