ESI ES3247 - Backlight Settings; Unit Reset Procedure; Power Failure Handling

Reseng the Unit
Press the reset buon with a non-metallic pointed tool to reset the
unit. This will restore the built in programme and also reset the me
to 12:00pm and the date to 01/01/2000. Inially the display shows
all segments lit for a few seconds, but then will show the current
configuraon. To set the me and date, please refer to page 8.
NB: As a safety feature aer reseng the unit will be in OFF operat-
ing mode. Reselect your required operang mode (page 5). Use of
excessive force may result in the reset buon scking behind the
front cover of the programmer. If this happens the unit will “freeze”
and the buon can only be released by a qualified installer.
Basic Sengs
Seng the Date (refer to fig.4)
Fig. 4
Seng the Backlight
The backlight can either be set permanently ON or OFF. The
programmer backlight is pre-set to be permanently OFF. When the
backlight is permanently OFF, the backlight will turn ON for 15
seconds when + or – buon is pressed, then turn OFF automacally.
To change seng to permanently ON, press SET repeatedly unl L
IR is displayed. Press + or – to turn backlight ON or OFF. Press SET to
confirm.
NB: Do not use Advance or +HR Boost Buon to acvate the
backlight as it may engage the Advance or +HR facility and turn on
the boiler. Only use + or - buon under facia cover.
9
Power Interupon
In the event of a mains supply failure the screen will go blank but the
back-up baery ensures that the programmer connues to keep the
me and retain your stored programme. When power is restored, if
there has been no change to the rear DIP switch, the programmer
then goes to RUN mode. If the configuraon seng on the rear DIP
switch has been altered during the power interrupon the screen
will inially show the new configuraon and the appropriate factory
default programme will be installed. Press SET buon to return to
RUN mode.