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7.4.2. Functions
The functions are similar to the modes of operation but they cannot be accessed
directly from the home view and they can vary from unit to unit.
In addition, since SOLAR, FLOOR and COOLING (called extra functions) can not be
used simultaneously, the choice of these functions should be made from the Installer
menu (D26 Extra function). In the function menu, only one of these extra function is
normally shown. The function menu is described in the following table.
Code
Set
point
name
Description
Range
Factory
setting
B1
OFF
The fan switches off when the heat pump does not run.
OFF/
Single
Speed/
2Speeds
OFF
Single
speed
The fan is always running at a single fixed speed (B2 Fan
speed), both when the heat pump is operating and when it
is not.
2
Speeds
The fan is always in operation but it runs normally at a
higher speed D6 (Fan AUTO Speed) when the heat pump
starts operating and at (B2 Fan speed) when it is not
operating.
B2
Fan
speed
The main fan speed regulation for the ventilation function.
There are three ventilation level that can be selected: LOW
D5 (Min Fan Speed), MEDIUM D4 (Fan medium speed)
HIGH D3 (Max fan speed).
LOW/
MEDIUM/
HIGH
HIGH
B3
Low
Tariff
Standard
The low tariff allows the electric heater and
the heat pump to run only during periods with
low electricity prices, according to the menu
item that regulate the program of the low tar-
iff D17/D18 (Low tariff weekday/weekends).
The unit runs only during pre-defined hours of
the day. If the PV function (B5) is active, this
allows the electric heater and the heat pump
to run outside the low tariff period.
OFF/
STANDARD/
OPTIMAL 1/
OPTIMAL 2
OFF
Optimal 1
This function allows the maximum exploita-
tion of the lower electricity price during the
night periods between 00:00 and 05:00.
Optimal 2
This function allows the maximum exploita-
tion of the lower electricity price during the
night periods between 00:00 and 05:00.
During the day, the unit works according to
Low Tariff periods D17 and D18.
Ventilation
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