Hitachi RAC-25FXB, Service Manual, Page: 25 / 131

– 4 –
OPERA
TING RANGE
Oper
ation mode
Cooling / Dehumidifying
Heating
Outdoor temper
ature
-
10 to
43°C
-
15 to
21°C
Remote controller Send out
operation signal to the indoor unit.
So as to operate the whole unit. (Refer Remote control manual)
Indoor unit indicators
Horizontal air deflector (Air intake) (Opens during operation and it closes when it stops operation.)
Air filter
Front panel
Horizontal air deflector (Air outlet)
Signal receiver
H
T
P
E
D
T
H
GI
E
H
H
T
DI
W
L
E
D
O
M
RAF-25RXB, RAF-35RXB, RAF-50RXB
750mm (29-17/32")
590mm (23-6/25")
215mm (8-15/32")
MODEL NAME AND DIMENSIONS
NAMES AND FUNCTIONS OF EACH P
A
R
T
INDOOR UNIT
CAUTION
Do not put anything in front of the signal receiver. Or else, it may not receive the signal properly.
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 quic
kly
.
NOTE FOR MUL
TI SYSTEM
Se
ve
ra
l indoor units can be connected to one outdoor unit.
Y
o
u
c
a
n
o
p
e
ra
te
only one unit or several units according to your needs.
Combination of operations:
the following combinations. You cannot operate the indoor units in
One unit
Other unit
Heating
Dehumidifying
Fan
Cooling
Other indoor units which are turned on later
go
into
standby
The indoor unit which is turned on first
continues
to
operate.
To operate the indoor
units turned on later, set the operation
mode and the operation lamp lights. mode as same as the indoor unit turned on first.
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 ma
y become w
a
rm
.
This is because the
indoor unit returns refrigerant to the outdoor unit to be ready for operation.
When operation mode is selected: During automatic operation:
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 f
or the first indoor unit, the ne
xt indoor unit will
also star
t to cool or dehumidify
.
– 5 –
H S I L G N E
DEUTSCH S I A Ç N A R F O N A I L A T I H S I N A P S S Ê U G U T R O P
Й И К С С У Р
Open the front panel
s
To open the front panel, use the remote controller to stop unit operation. Then press at the top left and right corners of the front panel.
s
Grasp the left and right sides of the front panel and open it toward you.
Close the front panel
s
To close the front panel, press at the top left and right corners of the front panel.
s
Press the upper center part of the front panel to close properly.
TIMER lamp This lamp lights when the timer is working.
OPERA
TION lamp
This lamp lights during operation. During heating, the operation indicator may blink, blowing very lightly or totally stopping under the following conditions: (1)
During preheating (heating operation) For about 2~3 minutes after start up.
(2)
During defrosting (heating operation) Defrosting will be performed about
once an hour when frost forms on the heat exchanger of the outdoor unit, for 5~10 minutes each time. (
If the piping
length used is longer than usual, frost will likely to form.)
TEMPORARY SWITCH
Top left and right corners
TEMPORARY SWITCH
TEMPORARY SWITCH s s
Upper center part
INDOOR UNIT INDICATORS HOW TO OPEN OR CLOSE THE FRONT PANEL
FIL
TER lamp
This lamp lights when the device is operated for a total of about 200 hours, it is time to clean the filter
.
The lamp
goes out when the
“
(A
UT
O
SWING)” button is pressed while the operation is stopped.
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.
ENGLISH
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