Hitachi RAC-50NH5, Service Manual

Page: 10 / 113

– 8 –
INDOOR UNIT
NAMES AND FUNCTIONS OF EACH PART
Air filter
To prevent dust from coming into the indoor unit.
(Refer page 25)
Front panel
Indoor unit indicators
Light indicator showing the operating condition.
(Refer page 9)
Horizontal deflector ● Vertical deflector
(Air Outlet)
(Refer page 20)
Remote controller
Send out operation signal to the indoor unit. So as to
operate the whole unit.
(Refer page 10)
WIDTH (mm)
780
MODEL
RAK-50NH5
HEIGHT (mm)
280
DEPTH (mm)
210
MODEL NAME AND DIMENSIONS
MULTI-AIR CONDITIONER
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.
Combination of Operations:
●
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)
Adjusting the Number of Indoor Units:
Decrease the number of indoor
units to be operated especially
when it is very hot or cold or
when you want to reach the
present temperature quickly.
Stopped Indoor Units:
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.
When operation mode 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: