Caution
• Do not dry out the air filter under direct sunshine or with fire.
• The air filter should be installed before the
unit
body
installation.
13. Symptoms That Are Not Faults
The following symptoms may be experienced during the normal
operation of the
unit
and are
not
considered faults. Note: If you are not
sure whether
a
fault has occurred, contact your supplier or service
engineer immediately.
Symptom 1: The unit will not run
Symptom 2: The unit emits white mist
White mist is generated and emitted when the
unit
starts to
operate
in
a
very humid environment. This phenomenon will stop
once the humidity in the room is reduced to normal levels.
The
unit
occasionally emits white mist when
it
runs
in
heating
mode. This occurs when the system finishes periodic defrosting.
Moisture that may accumulate
on
the unit's heat exchanger coil
during defrosting becomes mist and is emitted from the unit.
Symptom 4: Dust is emitted from the unit
This can occur when the unit first runs after a long idle period.
14. Troubleshooting
14.1 General
a.
A
safety device such as
a
fuse or circuit breaker frequently
blows/trips.
b. An object or water enters the unit.
c. Water is leaking from the unit.
Figure 12.4
Maintenance after a long period of non-use
a. Check for and remove anything that might be blocking the inlet
and outlet vents of the indoor units and outdoor units.
b. Clean the
unit
casing and clean the filter. Refer
to
[Cleaning the
filter] and "Cleaning the filter" for instructions. Re-install the
filter before running the unit.
c. Turn
on
the power
at
least
12
hours before you want
to
use the
unit
to
ensure
it
works properly. As soon as the power is turned
on, the remote control display appears.
18
Symptom:
When
the
ON/OFF
button
on
the
remote
control
is
pressed, the unit does not immediately start running.
Cause:
to
protect
certain
system
components,
system
start-up
or
re-start
is
intentionally
delayed
for
up
to
12
minutes
under
some
operating
conditions.
If
the
OPERATION
LED
on
the
unit's
panel
is
lighting,
the
system
is
working
normally
and
the
unit
will
start
after the intentional delay is complete.
Heating
mode
is
running
when
the
following
panel
lights
are
on:operation and the "DEF./FAN LED indicator.
Cause:
the
indoor
unit activates
safety
measures
because
of
the low outlet temperature.
Symptom 5: The unit gives off a strange smell
If
smells
such
as
those
of
strong-smelling
food
or
tobacco
smoke
are
present
in
the
room,
they
can
enter
the
unit,
leave
a trace
on
the
unit's
internal
components and
later
be
emitted from the unit.
4. Re-install the air filter.
5. Install
and
close
the
air
inlet
grille
by
reversing
steps
1
and
2,
and
connect
the
control
box
cables
to
the
corresponding
terminals
in
the main body.
Maintenance
before
stopping
using
the
unit
for
a
long
time
(e.g., at the end of the season)
a. Let
the
indoor
units
run
in
fan
only
mode
for
about
half
a
day
to
dry the interior of the unit.
b. Clean the air filter and indoor unit casing.
c. Refer
to
“Cleaning
the
air
filter"
for
details.
Install
cleaned
air
filters back in their original positions.
d. Turn
off
the
unit
with
the
ON/OFF
button
on
the
remote
control
and then unplug it.
Caution
•
When
the
power
switch
is
connected,
some
energy
will
be
consumed
even
if
the
unit
is
not
running.
Disconnect
the
power to save energy.
•
A
degree
of
dirt
will
accumulate
when
the
unit
has
been
used
several times, which will require cleaning.
•
Take of the batteries from the remote control.
Sections
14.2
and
14.3
describe
some
initial
troubleshooting
steps
that
can
be
taken
when
an
error
occurs.
If
these
steps
do
not
resolve
the
issue,
arrange
for
a
professional
technician
to
investigate
the
problem.
Do
not
attempt
further
investigations
or
troubleshooting yourself.
If
any
of
the
following
errors
occur,
turn off power,
contact
a
professional
technician
immediately
and
do
not
attempt to troubleshoot yourself:
Caution
• Do not attempt to inspect or repair this unit by yourself. Arrange
for a qualified technician to carry out all servicing and maintenance.
