Hitachi YUTAKI Series - Installer Mode; Entering Installer Mode; Fail-Safe Mode Setup

Controller pack
Service Manual
134
System MMI Pack (Room unit and RF receiver)
SMGB0066 rev.0 - 12/2009
 
InstallerModeisusedtoalterthesystemsettingsforspecic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 Installer Parameters Table.).


1..6
MANAUTO
1 2 3 4 5 6 7
1


Press the button.
Press and hold the button and
the PROGRAM & buttons
together.

Theunitwilldisplaytherst
parameter of installer parameter
group  (from Parameter
n.1 to n.19) as shown

Press the  or to change
factory setting.
Thedisplaywillashindicatingthat
a change has been made.

Press the green button to
conrmthechange.
Thedisplaywillstopashing.
(Continues in the next page)

Press button to go to the next
parameter.

Press the button to go to Installer parameter group
 ( ) (from Parameter nº 4 to nº 14)

To exit the installer mode press the  
buttons.

Thefail-safemodedenesthesystemstatusiftheRFcommunicationislost(e.g.whenthe 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.