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ST9400S
Contents
WHAT IS A PROGRAMMER?
General Description ........................................................................................3
The way to use a Programmer ........................................................................3
GETTING STARTED WITH YOUR ST9400S
Step 1: Setting the Date & Time .....................................................................4
Step 2: Running a Built-in Programme ...........................................................5
PROGRAMMING YOUR ST9400S
The Built-in Programmes ................................................................................6
Your Personal Programme ..............................................................................6
Reviewing the Programme Times ...................................................................7
Modifying the Hot Water Programme .............................................................7
Exiting HOT WATER Programming Mode ..............................................8
Modifying the Heating Programme .................................................................9
Exiting HEATING Programming Mode ...................................................9
Disabling/Enabling Time Periods ...................................................................9
OPERATING YOUR ST9400S
Choosing the Operating Mode .....................................................................10
Override the Operation Without Changing the Programmes........................11
The Extra Hour Function ...............................................................................11
FINE TUNING YOUR ST9400S
Changing From AM/PM Time display to the 24-hour Clock .........................12
Changing the Installer Parameters ...............................................................12
FAQ & TROUBLESHOOTING
How do I set the time only, if the ST9400S clock is not correct? ..................14
What do I do when the clocks go back in October and forward in March? .14
What should I do if I get ‘lost’ while programming the ST9400S? ................14
What happens if there is a power failure? ....................................................14
Troubleshooting Guide .................................................................................15
BOILER SERVICE REMINDER
Countdown to Service ..................................................................................16
When Service is Due ....................................................................................16
Shut-down .....................................................................................................17
CONFIGURATION & SERVICE DATA
Configuration Data (to be completed by Installer) .......................................18
Boiler & System Service Log ........................................................................19
ST9400S Controls Layout
Hot Water Operating Mode Indicator
Time Display
LoT™ Technology Display
Programme Time Markers
Heating Operating Mode Indicator
Heating Extra Hour Button
Heating Indicator Lamp
Heating Override Button
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Slider
Heating Operating Mode Button
OK/Next Button
Clock – and + Buttons
Hot Water Operating Mode Button
Hot Water Override Button
Hot Water Indicator Lamp
Hot Water Extra Hour Button
15
14
16
1 2 3 4 5
7
8
6
12
11
9
1013
19
CONFIGURATION & SERVICE DATA
Boiler & System Service Log
The space below can be used to provide a record of boiler & system services and
the names and contact numbers of the Installer and Service Personnel.
This information is important for a Home Information Pack.
Service/Installation
Date
Installation/Service
Engineer
Telephone Number /
Contact Details
Keep this document in a Home Information Pack
2


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