Auto Operation - Hitachi RAS-25CNH1 Service Manual

Auto operation

Q10
In the auto operation mode, the fan speed
cannot be changed using the fan speed
selector switch.
Q11
How is operation mode decided in AUTO
operation?
Q12
Is it possible to adjust room
temperature in the AUTO
operation mode?
Nice temperature reservation
Q13
When ON-timer is set, the system starts
woring earlier than the reserved time.
Q14
Is it possible to use the Nice temperature
reservation in the dehumidifying operation?
Q10
The auto fan speed mode is set automatically.
A11 Automatically, Heating, Cooling or Dehumidifying is
chosen according to the room temperature.
Cooling: Room temperature is higher than about 27
Dehumidifying: Room temperature is about 23
Heating: Room temperature is tower than 23
A12
The following conditions are set
automatically:
In the cooling mode: Room
temperature is set to 27
In the dehumidifying mode:
Temperature is set to a value
slightly lower than present room
temperature.
In the heating mode:
Room temperature is set to 23
You can raise set room
o
temperature up to 3

, or lower it up to 3
v
 .
using 6
A13
The Nice temperature reservation is working correctly. It
starts working enough to reach the preset temeprature at
the reserved time.
It will turn on up to 80 minutes earlier than the reserved
time.
A14
No, it is impossible. This works only in the cooling and
heating operation.
– 89 –
When the set temperature has
been changed in the AUTO
operation mode, the operation
o
C. mode is decided from the next
operation according to the
changed set room temperature.
for example, If the set room
temperature was lowered by 2
in cooling operation, each mode
o
C. will operate in the following
conditions:
C by using Cooling: Room temperature is
o
C by higher than about 25
Dehurnidifying: Room
temperature is about 21
Heating: room temperature is
lower than 21
o
C.
o o
C-27 C
o
C.
o
C
o
C.
o o
C-25 C.
o
C