ENGLISH
AUTO-DIAGNOSIS
ERROR OPERATION
LEDS
TIMER
STANDBY
POSSIBLE CAUSE
SYSTEM
BEHAVIOUR
SOLUTION
E0
X
F
F
Unit has not been
addressed correctly.
Fan is stopped and
flap is closed. The
system restarts
automatically as
soon as the unit is
addressed correctly.
Set the outdoor/indoor unit
refrigerant circuit address (see
Installation Instructions).
Operating mode
selected is not
compatible with the
system (ex. heating
mode has been
selected, when the
system was in cooling
mode, or vice versa).
Fan is stopped and
flap is closed. The
system restarts
automatically as soon
as a correct operating
mode is selected.
Select an available or compatible
mode with the other units of the
system.
E1
O
O
F
Error on the outdoor
unit.
Fan is stopped and
flap is closed. The
system restarts
automatically as soon
as the problem on
the out-door unit is
solved.
Check the error code using the
appropriate LEDs on the PCB of
the outdoor unit.
Follow the indications of the
diagnosis for the outdoor unit.
E3
F
F
F
Communication error
between the out-door
unit and the indoor
unit.
Fan is stopped and
flap is closed after 30
seconds of missing
communication.
The system restarts
automatically
as soon as the
communication is
recovered.
Check that connections
between C1 and C2 on outdoor
and indoor terminal block are
correct (C1 terminals connected
together, C2 terminals connect-
ed together).
Check that a shielded
communication cable has been
used.
Check that the dip-switch SW1
for communication address
setting is in the correct position.
Check that all earth cables are
properly connected to every
terminal.
Check that the shield of the
communi-cation cable is
properly connected to every
terminal.
Check the communication fuse
on out-door and indoor unit.
Check that the outdoor unit
has power supply and that it is
working.
Check that all PCBs are powered
on.
Be sure that power supply has
not been connected to the
communication terminals.
Check that there are no burnt
signs on the PCBs, in particular
close to communication cables.
Check that the fan motor is not
dam-aged and it doesn’t create
short circuit on the indoor PCB.
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