Operating Manual
24
TR
O
UBLE
S
H
OO
TIN
G
S
ym
p
to
m
Doesn’t o
p
erate at all:
Poor
C
oolin
g
performance:
The unit operate
s
differently from the Remote
C
ontrol Unit’s setting:
S
ee Pa
g
e
—
11
-
12
—
7
6
C
HE
C
K
O
N
CE
MO
RE
I
tems to c
h
ec
k
●
Is the Power Supply Plug disconnected its outlet?
●
Has there been a power
f
ailure
?
●
Has a fuse blown out, or a circuit breaker been tripped?
●
Is the timer operating
?
●
Is the Air Filter dirt
y?
●
Air the air conditioner’s intake grille or outlet port blocked?
●
Did
you a
dj
ust t
h
e room temperature sett
i
ngs
(
t
h
ermostat
)
cor-
r
ectl
y?
●
Is there a window or door open?
●
In the case of Cooling operation, is a window allowing bright sun
-
l
ight to enter? (Close the curtains.)
●
In the case o
f
C
oolin
g
operation, are there heatin
g
apparatus and
com
p
uters
i
ns
id
e t
h
e room, or are t
h
ere too man
y
p
eo
pl
e
i
n t
h
e
r
oom
?
●
Is the unit set for SUPER QUIET operation?
●
Are the Remote
C
ontrol Unit’s batteries dead
?
●
Are the Remote
C
ontrol Unit’s batteries loaded
p
ro
p
erl
y
?
O
PERATIN
G
TIP
S
I
f
the problem persists a
f
ter per
f
ormin
g
these checks, or i
f
you notice burnin
g
smells, or the
O
PERATI
O
N Indicator Lamp (red
)
(Fig
. 2
6
)
an
d
t
h
e
TIMER
I
n
di
cator
L
amp
(g
reen
)
(Fig
. 2
5
)
f
lashes, immediatel
y
sto
p
o
p
eration, disconnect the Power
S
u
pp
l
y
Plu
g
(Fi
g
. 1
H
)
, an
d
consu
l
t aut
h
or
i
ze
d
serv
i
ce
p
ersonne
l.
Operation and Performanc
e
Heatin
g
Per
f
ormanc
e
●
This air conditioner o
p
erates on the heat-
p
um
p
p
rinci
-
ple, absorbing heat from outdoor air and transferring that
heat indoors. As a result, the operatin
g
per
f
ormance is
r
educed as outdoor air tem
p
erature dro
p
s. If
y
ou feel that
insufficient heating performance is being produced, we
r
ecommen
d
y
ou use t
hi
s a
i
r con
di
t
i
oner
i
n con
j
unct
i
o
n
w
ith another kind of heatin
g
appliance
.
●
H
eat-
p
um
p
a
i
r con
di
t
i
oners
h
eat
y
our ent
i
re room
by
r
ecirculatin
g
air throu
g
hout the room, with the result that
s
ome time may be required after first starting the air con-
di
t
i
oner unt
il
t
h
e room
i
s
h
eate
d.
Microcomputer-controlled Automatic Defrostin
g
●
When usin
g
the Heatin
g
mode under conditions o
f
low
o
utdoor temperature and hi
g
h humidity, frost may for
m
o
n the outdoor unit, resulting in reduced operating per
-
f
ormance
.
In order to prevent this kind of reduced performance, this
un
i
t
i
s e
q
u
ipp
e
d
w
i
t
h
a
Mi
crocom
p
uter-contro
ll
e
d
A
uto-
m
atic Defrostin
g
function. If frost forms, the air condi-
tioner will temporarily stop, and the defrosting circuit will
op
erate brie
f
l
y
(
f
or about 7-15 minutes).
D
uring Automatic De
f
rosting operation, the
O
PERATI
ON
I
n
di
cator
L
amp
(
re
d)
(Fi
g. 2
6
) will
f
lash.
AU
T
O
R
esta
r
t
In Event o
f
Power Interruptio
n
●
The air conditioner power has been interrupted by
a
p
ower
f
ailure. The air conditioner will then restart auto
-
m
aticall
y
in its
p
revious mode when the
p
ower is restored.
●
O
perated by settin
g
be
f
ore the power
f
ailure.
●
I
f a power failure occurs durin
g
TIMER operation, the time
r
will be reset and the unit will begin (or stop) operation at th
e
new time settin
g
. In the event that this kind o
f
timer
f
ault
occurs the TIMER Indicator Lamp will flash (see Pa
g
e. 4)
.
●
Use o
f
other electrical a
pp
liances (electric shaver, etc.) o
r
nearb
y
use of a wireless radio transmitter ma
y
cause the
air conditioner to malfunction. In this event, temporaril
y
disconnect the Power
S
upply Plu
g
, reconnect it, and the
n
use the Remote
C
ontrol Unit to resume o
p
eration
.