![Hitachi Summit RAC-18YH5 Service Manual Download Page 9](http://html.mh-extra.com/html/hitachi/summit-rac-18yh5/summit-rac-18yh5_service-manual_2139436009.webp)
Ð6Ð
Point
this
windo
w
to
w
ard
the
indoor
unit
when
controlling
it.
The
transmission
sign
blinks
when
a
signal
is
sent.
This
indicates
the
room
temper
ature
selected,
current
time
,timer
status
,
function
and
intensity
of
circulation
selected.
Press
this
button
to
star
toper
ation.
Press
it
again
to
stop
oper
ation.
Controls
the
angle
of
the
horiz
ontal
air
deflector
.
!
This
deter
mines
the
fa
n
speed.
Ev
er
y
time
yo
u
press
this
button,
the
intensity
of
circulation
will
change
from
(AU
TO
)t
o
(HI)
to
(MED)
to
(LO
W).
(This
button
allo
ws
selecting
the
optimal
or
pref
erred
fa
n
speed
fo
reach
oper
ation
mode
.)
"
Use
this
button
to
set
the
sleep
timer
.
#
Use
these
buttons
to
raise
or
lo
w
er
the
temper
ature
setting.
(K
eep
pressed,
and
the
value
will
change
more
quic
kly
.)
#
Use
this
button
to
set
and
chec
k
the
time
and
date
.
Press
this
button
after
the
batter
ies
are
replaced
or
when
some
irregular
oper
ation
is
found.
$
!
Use
this
button
to
select
the
oper
ating
mode
.E
ve
ry
time
yo
u
press
it,
the
mode
will
change
from
(AU
TO
)t
o
(HEA
T)
to
(DEHUMIDIFY)
to
(COOL)
and
to
(F
AN)
cyclically
.
!
#
!
Use
these
buttons
to
set
the
timer
.
%#
Select
the
tur
n
OFF
time
.
%#
Select
the
tur
n
O
N
time
.
&
Time
setting
reser
vation.
$$ "
Cancel
time
reser
vation.
#
$""
¥
This
controls
the
operation
of
the
indoor
unit.
The
range
of
control
is
about
7
meters
.I
findoor
lighting
is
controlled
electronically
,the
range
of
control
ma
y
be
shor
ter
,i
n
some
cases
,the
control
signal
ma
y
not
be
receiv
ed.
This
unit
can
be
fix
ed
on
a
w
all
using
the
fixture
pro
vided.
Bef
ore
fixing
it,
mak
e
sure
the
indoor
unit
can
be
controlled
from
the
remote
controller
.
¥
Handle
the
remote
controller
with
care.
Dropping
it
or
getting
it
w
et
m
ay
compromise
its
signal
transmission
capability
.
¥
After
ne
w
batter
ies
are
inser
ted
into
the
remote
controller
,the
unit
will
initially
require
appro
ximately
10
seconds
to
respond
to
commands
and
oper
ate
.
!
'
¥D
o
not
put
the
remote
controller
in
the
follo
wing
places
.
¥I
n
direct
sunlight
¥I
n
the
vicinity
of
a
heater
.
¥
Handle
the
remote
controller
carefully
.D
o
not
drop
it
on
the
floor
,and
protect
it
from
w
ater
.
¥
Once
the
outdoor
unit
stops
,i
twill
not
restar
tf
or
about
3
min
utes
(unless
yo
u
tur
n
the
po
w
er
switch
off
and
on
or
unplug
the
po
w
er
cord
and
plug
it
in
again).
This
is
to
protect
the
de
vice
and
does
not
indicate
a
failure
.
¥I
fy
ou
press
the
FUNCTION
selector
button
dur
ing
oper
ation,
the
de
vice
ma
y
stop
fo
rabout
3
min
utes
fo
rprotection.
AU
TO
HEA
T
DEHUMIDIFY
COOL
FA
N
FA
N
SPEED
LO
W
MED HI
SLEEPING
ST
OP
(CANCEL)
ST
AR
T
(RESER
VE)
ST
AR
T/ST
OP
TIME
TIMER
SET
TIMER
SELECT
OR
ON
TIMER
OFF
TIMER
AU
TO
SWING
Ð7Ð
$
¥I
fthere
is
a
po
w
er
failure
,operation
will
be
automatically
restar
ted
when
the
po
w
er
is
resumed
with
pre
vious
oper
ation
mode
and
airflo
w
direction.
(As
the
oper
ation
is
not
stopped
by
remote
controller
.)
¥I
fy
ou
intend
not
to
contin
ue
the
oper
ation
when
the
po
w
er
is
resumed,
switch
off
the
po
w
er
supply
.
When
yo
u
switch
on
the
circuit
break
er
,the
oper
ation
will
be
automatically
restar
ted
with
pre
vious
oper
ation
mode
and
airflo
w
direction.
Note:
1.
If
yo
u
do
no
trequire
Auto
Restar
tControl,
please
consult
your
sales
agent.
2.
Auto
Restar
tControl
is
not
av
ailab
le
when
Timer
or
Sleep
Timer
mode
is
set.
The
de
vice
will
automatically
determine
the
mode
of
oper
ation,
HEA
T
or
COOL
depending
on
the
initial
room
temper
ature
.The
selected
mode
of
oper
ation
will
change
when
the
room
temper
ature
varies.
Press
the
FUNCTION
selector
so
that
the
display
indicates
the
(A
U
TO
)mode
of
operation.
¥
When
AU
TO
has
been
selected,
the
de
vice
will
automatically
deter
mine
the
mode
of
oper
ation,
HEA
T
or
COOL
depending
on
the
current
room
temperature.
¥
When
AU
TO
is
first
selected,
the
de
vice
will
deter
mine
the
current
room
temperature
and
select
the
proper
operation
mode
accordingly
.
¥
When
the
air
conditioner
has
adjusted
the
room's
temperature
to
the
near
preset
temperature,
it
will
begin
to
monitor
operation.
If
the
room
temperature
subsequently
changes,
the
air
conditioner
will
once
again
select
the
appropriate
operation
(heating
or
cooling)
to
adjust
the
temperature
to
the
preset
temper
ature
.The
monitor
ing
oper
ation
range
is
3¡C
relative
to
the
preset
temperature.
¥I
f
the
mode
automatically
selected
by
the
unit
is
not
satisf
actor
y,
man
ually
change
the
mode
setting
(heat,
dehumidify
,cool
or
fan).
(
Press
the
(ST
AR
T/ST
OP)
button.
Operation
star
ts
with
a
beep
.
Press
the
button
again
to
stop
oper
ation.
Press
the
(F
A
N
SPEED)
button,
AU
TO
and
LO
W
is
av
ailab
le
.
As
the
settings
are
stored
in
memor
y
in
the
remote
controller
,y
ou
only
ha
ve
to
press
the
(ST
AR
T/ST
OP)
button
ne
xt
time
.
Yo
u
can
raise
or
lo
w
er
the
temperature
setting
as
necessary
by
maxim
um
of
3¡C
.
Press
the
temper
ature
button
and
the
temper
ature
setting
will
change
by
1¡C
each
time
.
¥
The
preset
temper
ature
and
the
actual
room
temper
ature
ma
y
va
ry
some
what
depending
on
conditions
.
&
$
#$
– 7 –
Summary of Contents for Summit RAC-18YH5
Page 6: ...SPECIFICATIONS 0 4 ...
Page 17: ... 01 2 34 5 6 2 7 6 7 8 3 9 15 ...
Page 18: ... φ 0 φ φ 0 1 1 1 2 33 16 ...
Page 20: ... 0 0 1 203 1 202 4 5 5 6 6 728 5 9 7 8 2 7 4 18 ...
Page 21: ... 19 ...
Page 24: ...RAC 18YH5 MODEL A X 8 T 1 1 SELF CHECK SELF MODE SERVICE SW RED RED RED 23 ...
Page 25: ... 25 0 0 0 1 1 1 1 2 0 1 3 44 5 1 1 6 7 4 887 8972 ...
Page 26: ... 27 ...
Page 27: ... 28 Mode data file RAS 18YH5 VALUE LABEL NAME ...
Page 28: ... 29 0 1 1 2 334 5 22 1 6 0 7 0 7 6 8 1 9 0 1 1 66 66 5 0 7 22 22 1 1 ...
Page 31: ... 35 0 1 ...
Page 32: ... 36 ...
Page 33: ... 0 1 2 3 4 1 2 0 1 2 3 4 1 2 5 6 6 5 6 6 7 4 4 37 ...
Page 34: ... 2 Receiver Circuit 3 Buzzer Circuit 01 23 4 5 5 6 6 6 78 9 4 9 5 4 9 8 2 38 ...
Page 36: ...5 Initial Setting Circuit IC401 6 Power Supply 0 1 2 2 3 4 2 5 6 4 7 8 6 9 8 6 40 ...
Page 37: ... 7 Fan Motor Drive Circuit 0 0 1 2 3 3 0 45 67 8 7 45 3 0 9 0 2 2 1 52 152 2 2 41 ...
Page 38: ... 0 1 2 3 4 1 2 3 3 3 0 3 5 6 1 7 7 5 8 0 42 ...
Page 40: ... 0 1 0 2 3 3 2 3 3 2 3 3 2 44 ...
Page 43: ... 1 8 0 9 1 8 0 9 47 ...
Page 45: ... 0 49 ...
Page 48: ... 0 12 3 4 0 12 5 5 4 6 7 3 8 9 3 9 9 9 4 4 4 52 ...
Page 49: ... 0 1 2 3 4 5 45 5 4 5 45 5 5 4 45 45 5 5 53 ...
Page 50: ...5 Power Circuit for P W B 54 ...
Page 54: ... 0 1 2 23 23 4 5 6 7 8 6 6 9 0 6 1 3 1 6 0 1 6 6 0 9 58 ...
Page 57: ... 0 0 0 1 8 Reversing valve control circuit 2 334 5 4 6 5 7 8 0 3 0 8 0 8 0 61 ...
Page 67: ... 71 0 0 1 2 31 0 4 5 0 6 1 6 6 0 1 5 0 1 6 0 0 6 0 ...
Page 68: ... 72 0 1 2 THE SUPPORT FUNCTION OF FAILURE DIAGNOSIS ...
Page 69: ... 73 0 1 2 3 4 5 6 3 3 7 8 6 9 3 8 6 9 3 6 8 698 6 6 60 9 6 8 ...
Page 70: ... 74 ...
Page 77: ... 81 ...
Page 80: ... 84 0 1 0 1 2 0 3 4 1 3 0 3 1 5 5 5 5 5 5 5 5 ...
Page 82: ... 86 0 1 0 2 3 2 3 4 4 4 4 4 ...
Page 83: ... 87 ...
Page 84: ... 88 0 10 2 3 3 4 1 2 2 5 2 6 7 7 7 7 7 7 7 3 3 3 3 3 3 3 ...
Page 85: ... 89 0 12 3 3 3 ...
Page 86: ... 90 0 12 1 3 4 5 4 5 4 5 4 65 65 7 6 8 9 2 8 5 ...
Page 88: ... 92 IPM Intelligent Power Module DIAGNOSIS ...
Page 91: ... 95 4 Tangential air flow fan and fan motor 1 Electrical parts 0 1 211 3 0124 5 6 78 ...
Page 92: ... 96 ...
Page 93: ... 97 ...
Page 94: ... 98 ...
Page 95: ... 99 ...
Page 96: ...Printed in Japan TSK AW NO 0010E RAS 18YH5 RAC 18YH5 F ...