Frost Protection; Energy Saving; Light Indicators; External Contact - Carrier C Manuel D'installation

Type C Electronic Control
Control
Frost - protection
This function keeps the temperature from dropping below 7°C in
rooms not used for long periods of time.
When this temperature is reached, the control activates the valve
and puts the fan on high speed.
The frost protection function can be activated through the
associated micro-switch (see section dip-swich configuration); if
enabled, this function activates even when the control is in the oFF
position.

Energy saving

This function is especially useful when air conditioning at night or
in rooms where the user is likely to be absent for a longer period of
time.
In this case, by selecting the function and pressing the FAN
button repeatedly it is possible to raise temperature by 4°C in
cooling mode and reduce it by 4°C in heating mode. Enabling this
function (Green LED oN) cuts out other displays.
Seasonal changeover
Manual
Selection of heating/cooling is done manually by pushing the button
on the control.
Centralised
Centralised seasonal changeover can be done in two ways:
- by a switch located on the central control panel that allows
heating/cooling mode changeover;
- by a temperature sensor (Accessory) located in contact with the
entering water pipe.
In this last mode, fan coil operation is driven by the control, in
cooling or heating, depending on the temperature read by the
sensor.
Switch and sensor operate on 230V power supply, so both must be
adequately insulated.
If the seasonal manual changeover button is pushed while the
centralised changeover mode is activated, the corresponding LED
will briefly flash while maintaining the activated mode.
In any case, centralised changeover takes priority over local
changeover.

External contact

The control has an input that can be used as window contact or
presence detection.
When such a signal is activated (presence of line voltage on the
terminal block contact) the control is set to OFF (open window)
or to Energy Saving (empty room), depending on the control
configuration. If the control is set to oFF, as a consequence
all outputs are disconnected (fan, valves, etc.) and only the
frost protection function is active if it has been enabled by its
corresponding dip-switch. If the control is set to Energy Saving, the
internal temperature is raised by 4°C in cooling mode and reduced
by 4°C in heating mode.
To switch from one operating mode to the other, keep the Power
button and the speed selection button pressed for at least 5
seconds.
The switching from one configuration to the other is signalled by a
light. The Green LED flashes 3 times when switching from oFF to
Energy Saving and the same green LED remains oN for 3 seconds
when switching from Energy Saving to oFF.
"Night" and "Darkening" mode
If the buttons and the knob are not pressed or used for 10 seconds,
the light is dimmed by the LEDs to reduce the disturbing light. This
function is called "Night" mode. By a special selection, the LEDs
light can be fully darkened ("Darkening" mode).
The "Darkening" mode can be selected by setting the fan speed to
its maximum value and keeping the selection button of fan speed
pressed for 5 seconds. 4 flashes of the red LED indicate the fan
maximum speed. With the same operation it is possible to return
to "Night" mode. The same LED flashes 3 times to signal that the
selection is active.
Use
Button operation:
POWER this button is used to turn the control on and off. When it is
oFF, all functions are disconnected but the control is still
powered at 230V.
If the frost protection function is selected by the special
microswitch, this function is active even if the control is off.
MODE this button is used to manually switch from cooling to
heating mode and vice versa.
FAN
this button is used to select the fan speed manually (low,
medium and high speed).
Keep on pressing this button to select the automatic
fan speed selection, which is controlled by the
microprocessor. If this operating mode is selected, the
yellow LED is on. Moreover, by using the same button it
is possible to select the Energy Saving function where
the room temperature required is raised by 4°C in cooling
mode and reduced by 4°C in heating mode. The green
LED turns on when the Energy Saving mode is active.
Temperature selector
Its purpose is to maintain the temperature at the desired level.The
reference value at the centre of the range is 20°C .
By turning the knob towards the symbol ( – ) the temperature is
reduced from the original setting (minimum value is 10°C).
By turning the knob towards the symbol ( + ), the temperature is
raised from the original setting (maximum value is 30°C).

Light indicators

Blue LED
ON Indicates that the control is in cooling mode ( ).
Flashing
Indicates that the control is in frost protection
mode ( ).
Red LED (group on the right)
ON Indicates that the control is in heating mode ( ).
Flashing
Indicates the presence of a fault (sensor failed
or not connected).
Red LEDs (group on the left)
ON
Indicates that the fan is operating at the
selected speed.
Yellow LED ( )
ON
Indicates that the selection of the fan speed is
set automatically.
Green LED ( )
ON
Indicates that the control is in Energy Saving
mode.
Flashing
Indicates that the control is in oFF mode forced
by the external contact.
Red / Blue LED
Flashing Indicates that the control is in "Autotest" mode.
E N G L I S H
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