Hitachi RAS-E10H2 - UNIT INFORMATION, INSPECTION AND SERVICE

PROCEDURE
1
2
3
B
E
N
Z
I
N
E
T
H
I
N
N
E
R
A
C
I
D
Air
Blow
– 18
–
INFORMATION
CAPABILITIES
Heating Capability
•
This
room
air
conditioner
utiliz
es
a
heat
pump
system
that
absorbs
e
xter
ior
heat
and
br
ings
it
into
a
room
to
be
heated.
As
the
ambient
temperature
gets
lo
we
r,
heating
capability
will
also
lo
we
r.
In
such
a
situation,
the
inverter
work
to
increase
compressor
rpm
to
keep
the
unit
’s
heating
capability
from
decreasing.
If
the
unit
’s
heating
perf
or-
mance
is
still
unsatisf
actor
y,
other
heating
appliances
should
be
used
to
augment
this
unit
’s
perf
or
mance
.
•
The
air
conditioner
is
designed
to
heat
an
entire
room
so
that
it
may
take
some
time
before
you
feel
warm.
Timer operation is recommended f
or eff
ectiv
e preheating ahead of the desired time
.
Cooling and Dehumidifying Capabilities
•
If the heat present in a room e
xceeds the unit
’s
cooling capacity (f
or e
xample
, if there are many people in
the room or other heating appliances are used), the preset room temperature ma
y not be reached.
the room or other heating appliances are used), the preset room temperature may not be reached.the room or other heating appliances are used), the preset room temperature ma
CAUTION
Do
not
use
a
sto
v
e
or
an
y
other
hightemperature
de
vices
in
pro
ximity
to the indoor unit.
•
When
f
an
speed,
room
temperature
are
set
with
the
remote
controller
bef
ore
star
ting
manual
oper
ation
and
the
b
uttons
are
released,
the
indication
of
settings
will
go
off
in
10
seconds
and
only
the
operation
mode
will be displa
y
ed.
•
Pressing
the
b
utton
while
the
unit
is
in
operation
will
let
the
protectiv
e
circuit
wo
rk
so
that
the
unit
will
not operate f
or appro
ximately 3 min
utes
.
•
Dur
ing heating oper
ation, the indoor unit’
s color indicator lamp ma
y flash with no air emitted f
or a while
.
•
If
y
ou
f
eel
cold
wind
dur
ing
heating
oper
ation
with
the
(HI)
f
an
speed
or
w
ant
to
mak
e
the
unit
oper
ation
quieter after the room is heated, use of
(A
UT
O) setting is recommended.
•
With the
(LO
W) setting, the unit
’s
cooling capability will lower slightly
.
•
With the
(LO
W) setting, the unit’
s heating capacity will v
ar
y with the oper
ating conditions
.
VARIOUS FUNCTIONS
•
When the timer has been progr
ammed, the unit will not oper
ate
ev
en if the set time is reached unless the
unit
receiv
es
a
signal
from
the
remote
controller
.
Confir
m
that
timer
programming
is
complete
(beep)
and
the
TIMER lamp of the indoor unit lights
.
•
If
the
(SLEEP)
b
utton
is
pressed
while
the
ON/OFF
timer
is
prog
r
ammed,
the
sleep
timer
tak
es
pr
ior
ity
.
ity.ity
•
Dur
ing
sleep
timer
operation,
the
f
an
speed
sets
to
(LO
W)
regardless
of
the
preset
speed.
The
remote
controller displa
y indication will remain unchanged e
v
en with the
(LO
W) setting.
TIMER PROGRAMMING/SLEEP TIMER OPERATION
PROHIBITION
– 19
–
REGULAR INSPECTION
PLEASE
CHECK
THE
FOLLO
WING
POINTS
EVER
Y
EITHER
HALF
YEARL
Y
YEARLY YEARL
OR
YEARL
Y.
YEARLY.YEARL
CONT
AC
CONTACCONT
T
Y
OUR SALES A
YOUR SALES AY
GENT SHOULD
Y
OU NEED ANY HELP
YOU NEED ANY HELPY
.
OU NEED ANY HELP.OU NEED ANY HELP
1
2
3
W
ARNING
WARNINGW
W
ARNING
WARNINGW
Chec
k
to
see
if
the
unit
’s
ear
th
line
has
been
con-
nected correctl
y.
If
the
ear
th
line
is
disconnected
or
f
aulty
,
aulty, aulty
unit
f
ailure
or
electr
ic shoc
k hazard ma
y result.
Chec
k
to
see
if
the
mounting
frame
has
rusted
ex
-
cessivel
y
or
if
the
outdoor
unit
has
tilted
or
becom
e
unstab
le
.
It could collapse or f
all, causing injur
y.
AFTER SALES SERVICE AND WARRANTY
WHEN ASKING FOR SERVICE, CHECK THE FOLLOWING POINTS.
CONDITION
CHECK
THE FOLLO
WING POINTS
THE FOLLOWING POINTSTHE FOLLO
•
Do the batter
ies need replacement?
•
Is the polarity of the inser
ted batteries correct?
•
Is the fuse all right?
•
Is the v
oltage e
xtremely high or lo
w?
•
Is the circuit breaker “ON”?
•
Is the power plug inserted?
•
Do y
ou ha
ve
an
y po
wer cut?
•
Is the air filter b
loc
k
ed with dust?
•
Is the set temper
ature suitab
le?
•
Have
horizontal
air
deflectors
been
adjusted
to
their
correct
positions according to the operation mode selected?
•
Are
the
air
inlets
or
air
outlets
of
indoor
and
outdoor
units
b
loc
k
ed?
•
Is the f
an speed
“L
OW
”?
When it does not oper
ate
.
When it does not cool well.
When it does not heat well.
If the remote controller is not
tr
ansmitting a signal.
(Remote controller displa
y is
(Remote controller display is(Remote controller displa
dim or b
lank.)
The f
ollo
wing phenomena do not indicate unit f
ailure
.
<Operation
start>
The
unit
is
preparing
to
bl
ow
w
ar
m
air
.
Please
w
ait.
<In
operation>
The
outdoor
unit
is
defrosting.
Please
wait.
Refrigerant
flow
noise
in
the
pipe
or
valve
sound
generated
when
flow
rate
is
adjusted.
Noise
generated
when
the
unit
expands
or
contracts
due
to
temperature
changes.
Noise
generated
with
the
indoor
unit
fa
n’
s
n’s n’
r
pm
changing
such
as
operation
star
t
times.
Noise
of
the
motorized
valve
when
the
unit
is
switched
on.
Dur
ing heating, the oper
ation
indicator b
links and air b
low stops
Hissing or fizzy sounds
Squeaking noise
Rustling noise
W
ARNING
WARNINGW
Clicking noise
Chec
k to see if the po
wer plug is securel
y inser
ted
into the wall soc
ket.
If
the
power
plug
is
not
inserted
into
the
wall
socket
securely
or
becomes
hot,
an
electric
shock
or
fire
may
result.
If
dust
or
dirt
is
found
on
the
power
plug,
clean
the
plug
and insert it into the wall socket.
- 13
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