Multi-Air Conditioner - Hitachi airHome RAD-DJ18QHAE Operation Manual

MULTI-AIR CONDITIONER

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
Heating
During automatic operation:
When heating operation is automatically selected for the fi rst indoor unit, the next indoor unit will then
●
start to heat. Also, if cooling or dehumidifying is automatically selected for the fi rst 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 cold or when you
want to reach the present
temperature quickly.
OPERATING RANGE
Operation mode
Outdoor temperature
Other unit
Cooling
Dehumidifying
Fan
Cooling / Dehumidifying
–10 to 46°C
The indoor unit which is turned on fi rst continues
●
to operate. Other indoor units which are turned on
later go into stanby 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 fi rst.
Stopped Indoor Units:
When an indoor unit is operated in the
cooling, heating or dehumidifying mode in
the room, the sound of refrigerant fl ow 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.
Heating
–15 to 24°C
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