Installer Mode; Entering Installer Mode; Fail-Safe Mode Setup - Hitachi SYSTEM MMI PACK Manuel D'installation

3. Installer Mode

Installer Mode is used to alter the system settings for specific applications, to use the special features
of the Room Unit in a different way or to alter the factory preset parameters. Parameters are divided
into two groups:
- Category 1 parameters – Room Unit Setup
- Category 2 parameters – System Setup.
These are all listed in section 3.5 Installer Parameters Table.

3.1 Entering Installer Mode

1
1 2
Press the button.
Press and hold the
PROGRAM &
3
Press the or
change factory setting.
The display will flash
indicating that a change
has been made.
5
Press button
to go to the next
parameter.

3.2 Fail-Safe Mode Setup

The fail-safe mode defines the system status if the RF communication is lost (e.g. when the Room Unit
stops communicating due to discharged batteries). If the system is a direct (radiator one), then the
factory setting will make the system revert to a set point of 10°C for frost protection. If indirect loops are
added, the system will continue to operate at the last communicated setpoint.
50036443-002 B - Hitachi Room Unit Inst (EN, F).indd 7
3 4 5 6 7
MANAUTO
1..6
2
1
button and the
buttons together.
to
Room Unit Installation Guide
2
2
The unit will display the first parameter of installer
parameter group category 1 (from Parameter n.1
to n.19) as shown
4
Press the green
button to confirm the
change.
The display will stop
flashing.
6
Press the button to go to Installer parameter
group category 2 ( ) (from Parameter n.4 to n.14).
7
To exit the installer mode press the
buttons.
7
or
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