Installation and operation manual
11
FWEC3
Advanced plus electr
onic controller
FC66002765
DISPLAY
The display shows the following information
■ Minimum temperature control selected: symbol
(displayed only when the thermostat is switched of
f)
■ Minimum temperature control enabled: DEFR indication
DEHUMIDIFICATION
The dehumidifi
cation function, enabled only in the Cooling
mode, activates operation of the indoor unit in order to achieve
a 10% reduction in the level of humidity present in the room
at the time the function itself was selected.
SELECTION
Dehumidifi cation can be selected/unselected in the Cooling
mode by simultaneously pressing the
buttons.
If the water pr
obe (P04=0) or the remote humidity probe is not
available, in cases where the controller is installed directly
on the unit (P08=0), selection will not be enabled. If selected,
the dead band for automatic switching on the air side will be
brought to 5°
Once selected, the dehumidifi cation logic sets the target hu-
midity level as the humidity present at the time the function
was selected minus 10%. Where the room humidity is less
than 40% the target level will be set at 30%.
The fan will be forced to run at low speed or, if the temperature
is much higher than the setpoint, at medium speed.
In order to bring the humidity to the set value, the fan (and
valve, if present) will be activated even if the room temperature
has already reached the programmed setpoint (indicated on
the display). Should the room temperature fall too far below
this threshold, the logic will be temporarily inhibited
WATER CONTROL
Enabling of the electrical heater is tied to the water temperature.
The related enabling logic is described below
The enabling signal will not be given if the water sensor is
either not present or disconnected
DISPLAY
IThe display shows the following information
■ electrical heater selected by the user:
steadily lit
symbol
■
active electrical heater : fl ashing symbol
ECONOMY
The Economy function corr
ects the setpoint by 2.5°C and
forces the fan to run at the minimum available speed to reduce
unit operation.
■ Cooling: setpoint + 2.5°C
■ Heating: setpoint - 2.5°C
ACTIVATION
This function can be activated by pressing the key
DISPLAY
The Economy function is shown
on the display by the symbol
MINIMUM TEMPERATURE CONTROL
This logic makes it possible to keep the r
oom temperature from
falling too far when the thermostat is off by forcing the unit into
the heating mode if necessary and for the time required.
If the electrical heater is present, it will be used only if it was
previously selected as a resource in the heating mode.
SELECTION
When the thermostat is off, you can select the minimum
temperature control by pressing at the same time the keys
.
The same key combination disables this function.
ACTIVATION
If this contr
ol is selected, the unit will switch on when the room
temperature falls below 9°C.
When temperature exceeds 10°C the thermostat will resume
the Off status.
N.B.: Any Off command from digital input will disable this
logic
W
ATER TEMP.
AIR TEMP
.
AIR TEMP
.
AIR TEMP
.
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