4
Trouble Shooting
CAUTION
Before Operation
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Special Remarks
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3-minute
protection
after
compressor
stop
To protect compressor, it will be off continuously for at least 3 minutes once it has stopped.
5 - minute protection
Compressor
must
run
for at least 5
minutes
once
it
has
operated
.
During
the 5
minutes
,
compressor
will
not
stop even that the
room temperature
reaches
the
set
temperature
point
unless
you
use
remote
controller
to
turn off
the unit
(
all
indoor
unit
s
can
be turned
off
by
user
).
Cooling operation
The
fan
of
the
indoor
unit
will
never
stop
running
in cooling
operation
.
It
continues to operate even
if
the
compressor
stops working
.
Heating operation
Heating
capacity
depends
on
external
factors
l
ike
outdoor
unit
temperature
.
Heating
capacity
might
decrease
if
outdoor
ambient temperature
is
too
low
.
Anti
-
freezing
function
during
cooling
When
the
temperature
of
the
air
from
the
indoor
outlet
is
too
low
,
the
unit
will
run
for
some
time
under
the
ventilating
mode
,
to
avoid
frost
or ice
forming
on
the
indoor
heat
exchanger
.
Cold
air
prevention
During several
minutes
after
the
heating
mode
is
started
,
the
fan
of
the
indoor
unit
will
not
run
until
the
heat
exchanger
of
the
indoor unit
reaches
a
certain
temperature to
prevent
cold
draft
.
Defrosting
When the outdoor temperature is too low, frost or ice may form on the outdoor heat exchanger, reducing
heating
performance
.
When
this
happens
,
the
defrosting
system
of
the
air
conditioner
will
operate
.
At
the
same time
the
fan in
the
indoor
unit
stops
(
or
runs
at
a
very
low
speed
in
some
cases
),
to
prevent
cold
draft
.
After defrosting
is
over
,
the
heating operation
and
the fan
speed
re
sume
.
Blowing out the residual heating air
When stopping the air conditioner in normal operation, the fan motor might run with low speed for a while to
blow out the residual heating air.
Auto
restart
from
power
break
When
the
power
supply
is
recovered
after
power
break
,
all
preset
s
are
still
effective
and
the
air conditioner
will
run
according
to
the previous
setting
.
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If the trouble still exists even after checking the following, contact your
and inform them of the following
dealer
items.
1. If Trouble still exists
(1) Unit Model Name
(2) Content of Trouble
2.
No Operation
Check whether the SET TEMP is set at the correct temperature.
3.
Not Cooling or Heating Properly
Check
for
obstruction
of
air
flow
in
outdoor
or
indoor
units
.
Check
if
there are too
many
heating
sources
in
the
room
.
Check if the air filter is clogged with dust.
Chec
k
if
the
doors
or
windows
are
open
.
Check if the temperature condition is within the operation range.
4. This is Not Abnormal
Odour from Indoor Unit
Unpleasant odour diffuses from indoor unit after a long period of time. Clean the air filter and panels or allow
a good ventilation.
Sound from Deforming Parts
During system starting or stopping, a sound might be heard. However, this is due to thermal deformation of
plastic parts. It is not abnormal.
Steam from Outdoor Heat Exchanger
During defrosting operation, ice on the outdoor heat exchanger melts resulting in steam.
Dew on Air Panel
When the cooling operation continues for a long period of time under high humidity conditions, dew can
form on the air panel.
Refrigerant Flow Sound
While the system is being started or stopped, the refrigerant flow sound may be heard.
