Hitachi RWM-(H)FSN3E, Service Manual

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6 LCD user’s interface
SMGB0070 rev. 1 - 08/2011
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6.1 Description of the hardware
LCD user control is the new user-friendly interface for controlling the unit. This Control uses OpenTherm Communication
that allows for remote control of unit by means of an intelligent Room thermostat.
6.1.1 Button definitions
The control’s operating mode is very simple, with 7 user-friendly buttons.
Button descriptions:
1
On/Off: From the comprehensive view, this switches the selec-
ted area on or off. If no area is selected, the entire unit will be
switched on or off. From other displays it will stop all units, wor-
king as an emergency stop.
2
Ok: this button is used to select items and confirm edits to
them.
3
4 Arrows: these allow you to navigate within the menus and
displays.
4
Return: used as a cancel button when editing an item, and
also used to go to the main menu from the general display.
HITACHI
OK
1
2
3
4
6.2 Comprehensive view
Main screen is called “comprehensive view”. It provides the gene-
ral system information.
Move through this view using the arrow buttons.
“Time & Date”, “Alarm indication” and “Unit Status signals” are
displayed on all screens.
Only the following parameters can be modified on the “comprehen -
sive view” screen:
•
DHW temperature
•
Unit mode
•
On/off circuits, DHW, swimming pool or the entire unit.
•
Other values are not editable.
To edit the parameters, first select the desired parameter and
press OK button. After that, the new value can be entered using
“arrow” buttons. Confirm that the value is correct by again pressing
the OK button. The cancel button restores the previous value.
Pressing the “On/Off” button switches the “On/Off” status for all
areas (if they are available).
To change the “status” of a single area, select the desired area and
press the “On/Off” button.