FINE TUNING YOUR ST9400A
Changing from AM/PM Time Display to the 24 Hour Clock
Your ST9400A can operate on the 12 hour AM/PM or 24 hour clock formats. To
change the format, ensure the slider is in the RUN position then press and hold the
and buttons together for about 2 seconds. Ignore the ‘NOT VALID’ message
that will appear briefly. All the displayed times will be automatically changed to the
new format.
Repeating this procedure will change the clock display back to the original format.
Changing the Installer Parameters
The ST9400A has a special Installer Mode where some features can be adjusted
to suit your lifestyle or preferences – these are called Installer Parameters, and are
listed in the table below, along with a description of the options that are possible.
INSTALLER
PARAMETER
Parameter
Number
Default
Value
Options Description
24hr or am/pm
clock display.
1 12 12, 24 12 = am/pm display,
24 = 24hr display
Configure backlight
operation.
2 2 0, 1, 2 0 = off,
1 = on if button pressed,
2 = on continuously
Enable/disable auto
time change.
3 1 0, 1 0 = disabled,
1 = enabled
Number of ON/OFFs
per day.
5 2 2, 3 2 = 2 on/offs per day,
3 = 3 on/offs per day
Select default time
programme.
6 A A, b, C A = standard,
b = at home,
C = economy
Configure
Mini-Programmer.
This will be set by
your Installer and
will depend on your
system – do NOT
change without
contacting installer.
7 0 0,1
0 = standard Programmer,
1 = Mini-Programmer
Reset all parameters
8 1 0, 1 0 = do not reset
1 = default parameters
