1.4
1.5
1.6
1.7
The key lock is activated by keeping the Timer symbol on
the touch-screen display pressed for three seconds.
The user cannot perform any actions.
The stand-by symbol flashes every second.
To deactivate the lock, keep the Timer symbol on the touch
screen pressed for three seconds once again.
The lock remains active also for the next operations performed
via remote control and in the event of a power failure.
Press and hold the air exchange key ( ) for 10 seconds
to enable the function ("En" displayed); the dehumidification
and Auto functions are disabled (leaving active only
ventilation, heating and cooling) and the settable set range
is reduced from 22 to 28 in cooling mode and from 16 to
24 in heating mode).
The display brightness sensor can be disabled (leaving the
maximum brightness at all times) by pressing and holding the night button ( ) for 10 seconds. "ds" (disabled) or
"En" (enabled) will appear on the display.
Touch-screen display key lock
Hotel function
It is possible to deactivate the heating or the cooling
modes following a simple procedure.
Keep the A key on the touch-screen display pressed for
5 seconds until HC (heating and cooling) appears on the
display.
Press the A key for 1 second to switch to the CO (cooling
only) mode.
Press the A key again to switch back to HO (heating only)
mode.
Wait for 3 seconds without touching anything to memorise
the setting and return to normal operations.
Setting cool only or heat only modes
Brightness regulation
1.8
The 12HP DC inverter ELEC has an additional electric
element which provides heat when the weather conditions
outside are bad. The heat power of the resistor is equal
to 1,000W, so when the device software switches the
2.0 unit on, it will provide the combined thermal power
produced by the heat pump and the thermal power of the
electric element.
If you need to operate the appliance in quiet mode, it can
be activated with “element only”, without the compressor,
simply by setting the night-time mode by pressing the
button
In this case, the element comes on if:
• the 2.0 unit is working with the heat pump (heating
mode);
• the room temperature (measured by the internal probe)
is one degree less than the configured setpoint;
• the room temperature is ≤ 27 °C;
• there are no alarms or failures related to the ventilation,
room temperature probe and temperature coil.
The ventilation speed in this mode is fixed at 700 rpm.
If night-time operation is not selected, the element will
switch on, together with the compressor, if:
• the 2.0 unit is working with the heat pump (heating
mode);
• the room temperature is ≤ 24 °C;
• the room temperature is 2°C lower than the setpoint<
• the internal coil temperature is ≤ 44 °C;
• the ventilation is switched on and stable;
• there are no alarms or failures related to the ventilation,
room temperature probe and temperature coil.
In normal operation, with the heating switched on, the
element will deactivate if:
• the coil temperature of the internal exchanger is ≤ 47 °C;
• the room temperature is greater than the setpoint;
• the room temperature is at 25 °C;
• the ventilation stops or the fan is faulty;
• the compressor discharge temperature increases
abnormally;
• the compressor operating frequency increases
abnormally;
Heating operation (only for ELEC model)