Controller pack
Service Manual
142
System MMI Pack (Room unit and RF receiver)
SMGB0066 rev.0 - 12/2009
note
To run the adjusted program select the AUTO mode.
-
disabling / Enabling time periods
The Hitachi room unit has 6 periods each day that can be programmed, but you may not need all of these switch points for your
heating requirements. Therefore, any period from 2 to 4 can be removed from (or returned to) the heating program profile.
To disable or enable time periods:
To disable unwanted periods go to the desired period ( 2 to 6 ) using the PROGRAM
a.
or
buttons to navigate,
ensure the correct period is highlighted with the flashing square symbol. Press and hold the
button for at least 2
seconds and the display will indicate the period has been removed from the program.
To enable periods again follow the same procedure as above, navigating to the already disabled period. To enable
b.
this period again press and hold the button for at least 2 seconds.
4.22.7.3. operating
Choosing the operating mode
•
The Hitachi room unit can operate in three different modes: Automatic, Manual or Off. To set the operating mode press either
of the
,
or
buttons. The screen indicates which mode is currently active by displaying AUTO, MAN or OFF.
• AUTOMATIC (
) mode sets the Hitachi room unit to follow the built-in temperature program (default or personalised).
Operating the Hitachi room unit in this mode is the best way to maintain a high level of temperature
comfort whilst maximising your energy savings.
• MANUAL (
) mode sets the Hitachi room unit to act as a simple thermostat with a fixed setpoint throughout the day.
The setpoint can be adjusted from 5°C to 35°C by using the
or
buttons. The Hitachi room unit
will continue to maintain this temperature until another operating mode or temperature is selected.
• OFF (
) mode sets the Hitachi room unit to control to a minimum temperature setting of 5°C (default) that acts as a
frost protection measure for your home.
during normal operation
•
• Temperature Override
During normal operation (AUTO (
) or mode) the programmed temperature can be adjusted manually by pressing the
or
buttons or the
button. The ‘target’ temperature will be displayed and flash for 5 seconds - during this time the
or
buttons can be used to modify the set value. Note: This temperature override is cancelled at the next programmed
temperature change.
• Temperature Enquiry
When the Hitachi room unit is configured to control the room temperature directly it will display the current room temperature.
To review the programmed ‘target’ temperature (the temperature which the Hitachi room unit is trying to maintain) press
the
button. This ‘target’ temperature value will be displayed flashing for 5 seconds before returning to the current room
temperature value.
