Table of Contents
Advertisement
LANGUAGE FUNCTION
The language selection is usually selected on first power up or when the unit
is reset. This is explained on page 7. However if you require to change the
language of the ST620 then you can do this by accessing the language menu.
Entering the language menu will allow you select your required language
Once your required language is displayed, press the OK button to select
and save.
SERVICE MENU
The service menu should only be selected or changed by the engineer carrying
out the installation, or other qualified person. It is strongly recommended
that you familiarise yourself with the instructions contained in the operation
section of this manual before attempting to change any of the settings in the
service menu. During commissioning, the installation engineer has the option
to enter either his mobile or office telephone number as both a reminder when
the system is due to be serviced, and as a way for the home owner to make
contact when the service is due. The arrow key is not active when the ST620 is
in normal mode. To access the menu screen, press the OK key once. The first
menu display is the PROGRAM menu.
BATTERY STATUS
The ST620 checks the battery voltage frequently during normal operation.
If the battery voltage is sensed as being low, the low battery indicator will be
displayed on the screen. Although the programmable thermostat will continue
to operate normally at this stage, you should replace the batteries as soon as
possible to prevent the ST620 entering OFF mode.
20
ST620 INSTRUCTION MANUAL
Advertisement
Table of Contents
