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Idiomas disponibles
Idiomas disponibles
VENTILATION
The controller can govern 3 or 4-fan speed indoor units
OPERATING SPEED SELECTION
Using Fan
key it is possible to select the following speeds:
A UTO Automatic fan speed: depending on the set
temperature and the room air temperature.
With 3-speed configurations:
where:
1 = low speed
2 = medium speed
3 = maximum speed
COOLING
HEATING
With 4-speed configurations
where:
sm = extra-low speed
1 = low speed
2 = medium speed
3 = maximum speed
COOLING
HEATING
NB: in case of 4-speed configuration and valve, or 3-speed
configuration + CN (natural convection), ventilation in
heating mode is shifted by 0.5°C to permit a natural
convection phase
N O SYMBOLS Speed disabled. Can be selected only in
heating mode and with 4-speed configuration or 3-speed
configuration + CN (natural convection) only. The indoor
unit operates by natural convection only.
Extra low speed. Can be selected only with 4-speed
configuration. It works at extra low speed only.
Low speed
Medium speed
High speed
NB In the case of fixed speed, the fan on/off logic will be
equivalent to the automatic logic.
FWEC1
Standard electronic controller
FC66002763
WATER CONTROL
The ventilation operation depends on the system water
temperature control. Based on the operation mode, different
heating or cooling thresholds will be enabled.
Air temp.
Upon a call of the thermostat, the absence of the enabling
signal will be indicated on the display by the flashing of the
symbol representing the active mode (
The enabling signal is ignored:
I f the water sensor is not included (P04 = 0) or in alarm
Air temp.
status because disconnected
I n the cooling mode with 4-pipe configurations
FORCED OVERRIDES
The normal fan operating logic will be ignored in particular
override situations that may be necessary to ensure correct
control of the temperature or the unit's operation. This may
occur:
in the cooling mode:
o n-board controller (P01 = 0) and configurations with valve:
the minimum speed available will be maintained even once
the temperature has been reached.
O n-board controller and valveless configurations: after
every 10 minutes in which the fan remains idle a 2 minute
Air temp.
cleaning is carried out at medium speed to enable the air
sensor to read the room temperature more correctly.
In the heating mode
W hile the heating element is on: the fan is forced to run at
medium speed
O nce the heating element has gone off: a 2 minute post-
ventilation cycle will be run at medium speed. (NB: this
Air temp.
cycle will be completed even if the thermostat is switched
off or in the event of a changeover to the cooling mode).
DISPLAY
The display shows the fan status
S tb: fan in standby mode
O n: fan on
n oF: fan disabled to operate
by natural convection only
COOLING
Water temp.
HEATING
Water temp.
or
)
Installation and operation manual
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