Hitachi RAC-8CH9 Service Manual page 53

Automatic operation
How is the automatic
Q12
operation mode determined?
At an automatic operation,
Q13
changing the fan speed
change switch does not vary
the fan speed.
The room temperature
Q14
cannot be controlled at an
automatic operation.
According to the room
A12
temperature, cooling or
dehumidifying operation is
automatically selected.
Cooling:
When room temperature is
approx. 27°C or higher
Dehumidifying:
When room temperature is
between approx. 23°C and
27°C
Heating:
When room temperature is
approx. 23°C or lower
The fan speed is automati-
A13
cally determined.
It is automatically set as
A14
follows.
At cooling: Set at 27°C
At dehumidifying:
Set
lower than room
temperature
The room temperature
setting can be raised 3°C by
" " or lowered 3°C by " V ".
– 56 –
When changing the room
temperature setting in an
automatic operation, the next
automatic operation mode is
determined by new room
temperature setting.
If, for example, the room
slightly
temperature setting is 2°C
lowered for example, the
operation mode is as follows.
Cooling :
Dehumidifying :
Heating :
When room
temperature is
approx. 25°C or
higher
When room
temperature is
between approx.
21°C and 25°C
When room
temperature is
approx. 21°C or
lower