Hitachi RAD-25NH5, Service Manual, Page: 105 / 371

Ð 0202 Ð
Ð4Ð
WIDTH
(mm)
580
MODEL
RAI-25NH5
/
RAI-35NH5
/
RAI-50NH5
HEIGHT
(mm)
285
DEPTH
(mm)
580
To
prevent
dust
from
coming
into
the
indoor
unit.
(Refer
page
19)
Light
indicator
showing
the
operating
condition.
(Refer
page
5)
(Refer
page
15)
Send
out
operation
signal
to
the
indoor
unit.
So
as
to
operate
the
whole
unit.
(Refer
page
6)
With
this
multi-air
conditioner,
several
indoor
units
can
be
connected
to
one
outdoor
unit
to
be
driven.
You
can
operate
the
required
number
of
indoor
units.
!
"
●
You
cannot
operate
the
indoor
units
in
the
following
combinations.
●
The
indoor
unit
which
is
switched
on
first
continues
to
operate,
but
other
indoor
units
which
is
switched
on
later
does
not
operate
while
the
lamp
lights.
●
To
re-start
an
indoor
unit
which
was
operated
later,
stop
the
indoor
unit
which
was
operated
first
or
later
and
reset
the
type
of
operation,
then
perform
operation
again.
One
unit
Heating
Other
unit
Cooling
Dehumidifying
Circulating
(fan)
#$%!&
'
%
# !"
Decrease
the
number
of
indoor
units
to
be
operated
especially
whenit
is
very
hot
or
cold
or
whenyou
wan
t
to
reach
the
present
temperature
quickly.
#
# !"
When
an
indoor
unit
is
operated
in
the
cooling,
heating
or
dehumidifying
mode
in
the
room,
the
sound
of
refrigerant
flow
may
be
heard
from
a
stopped
indoor
unit
or
a
stopped
indoor
unit
may
become
warm.
This
is
because
the
indoor
unit
returns
refrigerant
to
the
outdoor
unit
to
be
ready
for
operation.
Whenoperationmode
is
selected:
●
When
heating
operation
is
automatically
selected
for
the
first
indoor
unit,
the
next
indoor
unit
will
then
start
to
heat.
Also,
if
cooling
or
dehumidifying
is
automatically
selected
for
the
first
indoor
unit,
the
next
indoor
unit
will
also
start
to
cool
or
dehumidify.
During
automatic
operation:
Ð5Ð
(
)
Use
this
switch
to
start
and
stop
when
the
remote
controller
does
not
work.
[Use
non-conductor
stick
(example
toothpick)]
●
By
pressing
the
temporary
switch,
the
operation
is
done
in
previously
set
operationmode.
●
When
the
operation
is
done
using
the
temporary
switch
after
the
power
source
is
turned
off
and
turn
on
again,
the
operation
will
be
done
in
automatic
mode.
This
lamp
lights
during
operation.
The
OPERATION
LAMP
flashes
inthe
followin
g
cases
during
heating.
*
% &
'&
For
about
2Ð3
minutes
after
starting
up.
+
% &
# !&
Defrosting
will
be
performed
about
once
an
hour
whenfrost
forms
onthe
heat
exchan
ger
of
the
outdoor
unit,
for
5Ð10
minutes
each
time.
This
lamp
lights
whenthe
timer
is
workin
g.
Whenthe
device
is
operated
for
a
total
of
about
200
hours,
the
FILTER
lamp
lights
to
indicate
that
it
is
time
to
cleanthe
filter.
The
lamp
goes
out
whenthe
Ò
(AUTO
SWING)Ó
buttonis
pressed
while
the
device
is
onÒSTANDBY
MODEÓ.
TEMPORAR
Y
SWITCH
Press
Temporary
Switch
about
5.5mm
Non- conducted stick
- 105 -