12
EG
ERROR
LEDS
OPERATION TIMER STANDBY
POSSIBLE CAUSE
SYSTEM BEHAVIOUR
SOLUTION
E3
F
F
F
C
o
m
mu
n
ic
at
io
n
e
rr
o
r b
e
tw
e
e
n t
h
e
outdoor unit and t
he indoor unit
Fan is stopped and flap is closed
after 30 seconds of missing
communication.
The system restarts automatically
as soon as the communicatio
n is
recovered.
Check that connections between C1
and C2 on outdoor and indoor terminal
block are correct (C1 terminals
co
n
n
ec
te
d
t
o
g
et
h
er
, C
2
t
er
m
in
al
s
connected together).
Check that a shielded communication
cable has been used.
Check that the dip-switch SW2 for
comm
un
ic
at
io
n ad
dr
es
s s
et
ting
is in
the correct position.
Check that all earth cables are
properly connected to every terminal.
Check
that
the
shield
of
the
communication cable is properly
connected to e
very terminal.
Check the communication fuse on
outdoor 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
damaged and it doesn’t create short
circuit on
the indoor PCB.
O = LED OFF
l
= LED ON
F = Flashing LED
