Hitachi RCI Service Manual page 222

6 Optional functions
d1 – Power on/off 1
This function stores the settings of the unit in the event of a cut in the electric power supply. The unit is restarted when the
power is re-established.
C A U T I O N
When this function is used without anyone controlling the unit, set the system monitoring mode to avoid risks.
N O T E
In the event of an electrical fault, the unit starts and stops according to the on/off setting of the power supply. If
the fault occurs during a stoppage enabled through the remote control, the unit will restart automatically once the
power supply is reconnected.
Settings
00
01
d2 – Not used
d3 – Power on/off 2
This function is used to restart the unit after a cut in the power supply lasting for more than 2 seconds. The standard unit
starts automatically under the same operating conditions, such as the operating mode, etc. in the case of an electrical fault
lasting for a maximum of 2 seconds.
The compressor unit restarts after three minutes plus the maximum 2 seconds of the fault.
C A U T I O N
When this function is used without anyone controlling the unit, set the system monitoring mode to avoid risks.
Settings
00
01
d4 – Cooling air temperature drop prevention
This function is useful when the thermostat on/off conditions are to be changed and a decrease in discharge air temperature
is to be avoided. As a result, the perception of draughts is prevented.
• Thermostat off conditions (thermostat switched off when the discharge air temperature is low):
– Cooling operation (including dry operation).
– Indoor air discharge temperature <11 °C maintained for 3 minutes.
• Thermostat on conditions (thermostat switched off when the discharge air temperature is low):
– Indoor discharge air temperature >13 °C.
– The thermostat will switch on depending on the indoor discharge air temperature.
Settings
00
01
210
SMGB0063 rev. 1 - 10/2010
Condition setting
Not available
Available
Condition setting
Not available
Available
Condition setting
Not available
Available