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17
S
I
U
3.2
EN
MAINTENANCE
In the even of a malfunction, please refer to the following table. If,
after performing the suggested checks, the problem is not solved,
please contact the authorised technical assistance.
An alarm code appears on the display in the event of faults. Some of
the functions, however, remain active (see FUNCTIONING column).
The only way to solve the problem is to disconnect and reconnect
the appliance. If the alarm still appears, please contact the
authorised technical assistance.
* for DC Inverter models: lack of communication between the main,
power, driver or display boards
Display alarms
Fault Possible causes Solution
The appliance
doesn't switch
on
No power supply
Check there is power supply (by turning a light on, for example).
Check that the thermal-magnetic circuit breaker used exclusively
to protect the appliance has not been tripped (if it has, reset it). If
the problem repeats immediately, please call the Service Centre
and avoid trying to make the appliance work.
Remote control batteries have run out
Check that the appliance can be turned on using the touch-
screen display and substitute the batteries.
The appliance
does not
cool/heat
adequately.
The temperature set is too high or too
low.
Check and, if necessary, adjust
the temperature setting on the remote control
The air filter is clogged Check the air filter and clean it if necessary
Check that there are no other obstacles
to the air flow both inside and outside.
Remove anything that might block the air flow.
The heating and cooling load has
increased (for example, a door or
a window has been left open or an
appliance has been installed in the
room which generates a lot of heat).
Try to reduce the heating and cooling load of the room following
instructions below:
Cover large windows exposed to sunlight with curtains or with
external maskings (blinds, porches, reflecting films, etc.);
The air conditioned room must remain closed for as long as
possible;
Avoid turning on halogen lamps or other high energy consumption
appliances such as small ovens, steam irons, hot plates etc.).
Alarm Cause Operation
E1
Faulty room temperature RT
sensor
It is still possible to activate Cooling, Dehumidification and Heating modes. It
only monitors the antifreeze function of the internal coil.
E2 Faulty internal coil IPT sensor None of the modes can be activated.
E3
Faulty outside temperature
OT sensor
None of the modes can be activated.
E4
Faulty external coil OPT
sensor
It is still possible to activate Cooling, Dehumidification and Heating modes.
Defrosting is performed at fixed times.
E5 Faulty internal fan motor None of the modes can be activated.
E6 Faulty external fan motor None of the modes can be activated.
E7
Lack of communication with
the display *
None of the modes can be activated.
E8
Compressor discharge probe
failure *
None of the modes can be activated.
CP Open CP contact
The appliance only works if the contact is closed. Check that the clamps are
connected.
OF
Maximum level float
intervention
During cooling and dehumidification, electronics keeps the water distribution
system active with the battery - together with the fan - to disperse excess water
in the container. During heating, condensation should drain freely through the
specific pipe. In the event of an alarm, check that the condensation pipe is not
bent or obstructed, thus preventing the water from flowing out.
Troubleshooting
17


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