Hitachi Summit RAC-18YH6, Service Manual, Page: 10 / 96

– 8 –
RAS_AW_001-014en 2008.1.29, 9:39 8
–
8
–
Press the
(ST
AR
T/ST
OP) b
utton.
Heating oper
ation star
ts
with a beep
. Press the b
utton again to stop oper
ation.
ST
AR
T
ST
OP
HEA
TING OPERA
TION
•
Use the de
vice f
or heating when the outdoor temper
ature is under 21
°C.
When it is too w
ar
m (o
v
er 21
°C), the heating function ma
y not w
or
k in order to protect the de
vice
.
•
In order to k
eep reliability of the de
vice
, please use this de
vice abo
v
e -15
°C of the outdoor
temper
ature
.
Press the FUNCTION selector so that the display indicates
(HEA
T).
1
Set the desired F
AN SPEED with the
(F
AN SPEED) b
utton
(the displa
y indicates the setting).
(A
UT
O)
:
The f
an speed changes automatically according
to the temper
ature of the air which b
lo
ws out.
(HI)
:
Economical as the room will become w
ar
m
quic
kly
.
But y
ou ma
y f
eel a chill at the beginning.
(MED)
:
Quiet.
(LO
W)
:
More quiet.
(SILENT)
:
Silent.
2
Set the desired room temper
ature with the
TEMPERA
TURE
b
uttons (the displa
y indicates the setting).
The temper
ature setting and the actual room temper
ature ma
y
v
ar
y some
what depending on conditions
.
3
■
As the settings are stored in memor
y in the remote controller
, y
ou
only ha
v
e to press the
(ST
AR
T/ST
OP) b
utton ne
xt time
.
■
Defr
osting
Defrosting will be perf
or
med about once an hour when frost f
or
ms on the heat e
xchange of the outdoor unit,
for 5~10 min
utes each time
.
Dur
ing defrosting operation, the oper
ation lamp b
links in cycle of 3 seconds on and 0.5 second off
.
The maximum time for defrosting is 20 minutes. (If the piping length used is longer than usual, frost will lik
ely to f
or
m.)
–
9
–
DEHUMIDIFYING OPERA
TION
Use the de
vice f
or dehumidifying when the room temper
ature is o
v
er 16
°C.
When it is under 15
°C
, the dehumidifying function will not w
or
k.
Press the
(ST
AR
T/ST
OP) b
utton.
ST
AR
T
ST
OP
Press the FUNCTION selector so that the display indicates
(DEHUMIDIFY).
Press the
(F
AN SPEED) b
utton to select LO
W and SILENT
.
1
■
When y
ou w
ant to change the oper
ation mode
, please use the
FUNCTION selector
.
■
Set the desired temper
ature is a
v
ailab
le
.
■
Y
ou also can use the FUNCTION selector to select this oper
ation.
■
Dehumidifying Function
•
Dehumidifying tak
es place with a target temper
ature which is slightly lo
w
er than the room
temper
ature setting.
(Ho
w
e
v
er
, target temper
ature is 16
°C f
or a temper
ature setting of 16
°C.
)
If the room temper
ature becomes lo
w
er than the target v
alue
, oper
ation stops
. If the room
temper
ature becomes higher than the target v
alue
, oper
ation restar
ts
.
•
The preset room temper
ature ma
y not be reached depending on the number of people present in
the room conditions.