Hitachi WINDOW/WALL TYPE ROOM AIR CONDITIONER, User Manual, Page: 9 / 18

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DRY:
This mode is used to decrease the humidity in the room.
COOLING:
O O
The temperature setting are adjustable between 16 C to 31 C . Cooling begins auto-
O
matically when the room temperature is 1 C above the set point, and stops when the room
O
temperature is 1 C below the set point. The fan will not stop running.
HEAT:
O O
The temperature settings are adjustable between 16 C to 31 C in heating mode.
O
The default temperature setting is 24 C in heating mode and the fan speed is optional.
Notes :
1. When changing the temperature setting, the fan motor operates at LOW speed for 3 minutes first for
compressor protection feature before heating begins.
2. When heating stops, there may be a slight delay of 30 seconds for the fan motor to stop.
O
3. If the condenser temperature is below 35 C, the fan will run in LOW speed despite the FAN setting.
O
If the condenser temperature is above 38 C, the fan will run at the FAN setting.
4. If the compressor is shut down by a malfunction, the fan will immediately shut down with the compressor.
AUTO:
The fan motor remains on MED speed in AUTO mode. The unit will select the appropriate
operating mode from FAN, COOL or HEAT based upon the temperature difference
O
between the actual and desired room temperature. If the actual room temperature is 2 C
above the set point, the unit operates in cooling mode. When the actual room temperature
O O
is not 2 C or higher above the set point and not 1 C or lower below the set point, the unit
O
will select the FAN mode. When the actual room temperature is 2 C below the set point,
the unit will operate in HEAT mode.
Note :
If activating the SLEEP mode when the unit is operating on AUTO mode, the fan motor will changed into
LOW speed mode immediately.
SLEEP:
Press and hold the "SWING" keypad for 2 seconds or use the remote control to activate
the "SLEEP" feature (
9000Btu/h models only) . Press and hold the "SWING" keypad
or use the remote control again for 2 seconds to deactivate the "SLEEP" feature. For
units (
9000Btu/h models) without "SWING" feature, use the remote control to activate
the "SLEEP" feature. In the Cooling mode, the cooling temperature set point will increase
O
1 C per hour after the "SLEEP" mode is selected. Two hours later, the set point will
continue at this temperature and the fan motor will remain on LOW speed. In the Heating
O
mode, the heating temperature set point will decrease 1 C per hour after the "SLEEP"
mode is selected. Two hours later, the set point will continue at this temperature and
the fan motor will remain on LOW speed. Using the "SLEEP" mode will reduce noise
creating a comfortable sleeping environment.
Note :
When activating the SLEEP mode in AUTO mode, the set temperature will not change over time.