Hitachi HRNM Serie Installations- Und Betriebshandbuch Seite 17

5.1.1. OPERATION PROCEDURE FOR COOLING, HEATING, DRY AND FAN OPERATIONS
Before Operation
Supply electrical power to the system for approximately 12 hours before start-up or a long
shutdown. Do not start the system immediately after power supply, it may cause a compressor
failure because the compressor is not heated well.
Make sure that the outdoor unit is not covered with snow or ice. If covered, remove it by using hot
water (less than 50°C).
If the water temperature is higher that 50°C, it will cause damage to plastic parts.
1. Turn on the power supply.
Three vertical lines appear on the liquid crystal display A/C or VENTI is indicated on the
liquid crystal display.
2. Press the MODE switch.
By repeatedly pressing the MODE switch, the indication is changed in order of COOL,
HEAT, DRY and FAN (In case of Cooling Only model, COOL, DRY and FAN).
(The figure shows when setting "COOL" mode is selected).
3. Press RUN/STOP Switch.
Then red LED turns ON. The system is automatically started.
NOTE:
Setting of Temperature, Fan Speed and Air Louver Direction
The setting condition is memorized after setting once, therefore the daily setting is not
required. In case that the setting is required to be changed, refer to "operation
procedure for Temperature, Fan Speed and Air Louver Direction Setting".
4. Switch OFF (STOP)
Press the RUN/STOP switch again. The RUN indicator (Red) is OFF. The system is
automatically stopped.
NOTE:
There could be a case that the fan operation is performed for approximately 2 minutes
after the heating operation is stopped.
5.1.2. OPERATION PROCEDURE FOR TEMPERATURE, FAN SPEED AND AIR LOUVER DIRECTION
SETTING
DO NOT touch the CHECK switch.
The CHECK switch is used only when servicing.
In case that the CHECK switch is pressed by mistake and the operation mode is changed to the
check mode, press the CHECK switch again for approximately 3 seconds, and press the CHECK
switch once again after 10 seconds: the mode will change back to normal.
Temperature Setting
Adjust the temperature by pressing TEMP " " or " " switch.
The temperature is increased by 1º C by pressing switch
The temperature decreases by 1º C by pressing switch
FAN modes; min. 17 °C for HEAT mode).
(The figure shows when setting 28 °C).
Setting FAN Speed
Press the FAN SPEED switch.
When the FAN SPEED switch is pressed repeatedly, the indication changes in the rotation of HIGH,
MEDIUM and LOW
For standard operation, set the fan speed at HIGH.
(The figure shows when setting "MED" speed).
NOTE:
In case of DRY mode, the fan speed is automatically changed to LOW, and can not be
changed. (However, the indication shows the present setting condition).
REMOTE CONTROL OPERATION
(máx. (max 30 °C).
(min. (min. 19 °C for COOL, DRY and
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CAUTION:
ATTENTION: