10
S
I
U
USER MANUAL
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.
Troubleshooting
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 adjust the temperature, if necessary.
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
It is still possible to activate Cooling, Dehumidification and Heating modes.
E3
Faulty outside temperature OT sensor It is still possible to activate Cooling, Dehumidification and Heating modes.
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 switches the compressor off and keeps
the water distribution system active with the battery - together with the fan - to disperse
excess water. 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.
* for models 10 and 12 HP DC Inverter: lack of communication
between the main, power, driver or display boards
