Hitachi RAK-18REF Service Manual

NAMES AND FUNCTIONS OF EACH PART
INDOOR UNIT
OPERATING RANGE
Operation mode
Operation mode
Cooling / Dehumidifying
Cooling / Dehumidifying
Heating
Heating
C°12 ot 51-
-10 to 4

°C
erutarepmet roodtuO
erutarepmet roodtuO
Air filter
To prevent dust from coming into the indoor unit.
(Refer page 6)
Front panel
(Refer page 7)
Indoor unit indicators
Light indicator showing the operating condition.
(Refer page 5)
Horizontal deflector Vertical deflector
(Air Outlet)
Remote controller
operate the whole unit.
MODEL NAME AND DIMENSIONS
NOTE FOR MULTI SYSTEM
Several indoor units can be connected to one outdoor unit.
You can operate only one unit or several units according to your needs.
Combination of operations:
When operation mode is selected:
You cannot operate the indoor units in the
following combinations.
One unit Other unit
One unit Other unit
Heating
Cooling
Dehumidifying
Fan
During automatic operation
The indoor unit which is turned on first continues to
operate. Other indoor units which are turned on later
go into standby mode and the operation lamp lights.
To operate the indoor units turned on later, set the
operation mode as same as the indoor unit turned
on first.
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.
Adjusting the number of indoor units:
Decrease the number of indoor
units to be operated especially
when it is very hot or very cold
or when you want to reach the
preset temperature quickly.
Stopped indoor units:
When an indoor unit is operated in the cooling,
heating or dehumidifying mode in one 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.
-4-
MODEL
WIDTH (mm) HEIGHT (mm) DEPTH (mm)
WIDTH (mm) HEIGHT (mm) DEPTH (mm)
WIDTH (mm) HEIGHT (mm) DEPTH (mm)
780
280
215
RAK-15QEF, RAK-18REF, RAK-25REF, RAK-25REFC
RAK-35REF, RAK-35REFC, RAK-50REF, RAK-50REFC
NAMES AND FUNCTIONS OF EACH PART
INDOOR UNIT INDICATIONS
TIMER LAMP (Orange)
This lamp lights when the
timer is working.
OPERATION LAMP (Yellow)
This lamp lights during operation.
The
OPE
RA
TI
RA
RA
ON LAMP fl
as
hes
in t
he
f
ol
lowing cases during
heating.
(1) During preheating
For about 2-3 minutes after
starting up.
(2) During defrosting
D
ef
r
ost
ing
wil
l be performed
about once an hour when frost
forms on the heat exchanger
of the outdoor unit, for 5-10
minutes each time.
TEMPORARY SWITCH
If the power stays on and the unit is not operated, power is slightly consumed in the control circuit.
The power is saved by turning off the power switch (or the circuit breaker when the power is supplied
from the outdoor unit).
Use this switch to start and stop when the remote
controller does not work.
By pressing the temporary switch, the operation is
done in automatic mode.
When the operation is done using the temporary
switch after the power source is turned off and turn
on again, the operation is done in automatic mode.
CAUTION
Turn off the circuit breaker if the
unit
is n
o
t be op
e
ra
ted f
or
a
or
or
l
ong
period.
F rost Wash Lamp(Green)
-5-
15

Hitachi RAK-18REF Specifications

General

Brand	Hitachi
Model	RAK-18REF
Category	Air Conditioner
Language	English