Honeywell thermostat ST9400S 1 Day Service Programmer User Manual

ST9400S – User Guide
1 Day Programmer, 2 channel
With Boiler Service Reminder / Shut-down Feature
Honeywell Control Systems Ltd.Arlington Business Park,BracknellBerkshireRG12 1EB
Technical Help Desk: 08457 678999www.honeywelluk.com50022737-006 A© 2007 Honeywell International Inc.
Features
Easy  to  use  slider  and  buttons  combined  with  ‘LoT’™  Technology  and  an ‘OK’ button, allows you to confirm changes and stay in control.
LoT™ Technology provides you with informative ‘on-screen’ feedback and...

HOT WATERHEATING
EXTRA HOUR
OVERRIDE
EXTRA HOUR
OVERRIDE
OK
NEXT
DAY/TIMEHOT WATERHEATINGRUNST9400S
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...


WHAT IS A PROGRAMMER?
General Description
Your  Honeywell  ST9400S  provides  timing  control  for  both  your  central  heating  and hot water systems, letting you set ON and OFF periods to suit your own lifestyle. 
The ST9400S does not directly control the temperature but works together with other temperature controls, such as room thermostats and cylinder thermostats, to control your heating and hot water system in your home.
ST9400S has 1-day programming and 2 on/off periods per day. It is...

4

Your ST9400S should have been set up to work correctly when it was installed. However, the following will show you how you can modify your settings to meet your particular lifestyle.
To  assist  you  with  programming  and  everyday  use  your  ST9400S  will  display  text messages at every stage to help you get the most out of your central heating and hot water system. The ST9400S uses LoT™ Technology to constantly update the display to give you feedback about what is required.
Step 1: Setting the...



GETTING STARTED WITH YOUR ST9400S
d. The  year  digits  will  now  be  flashing  and  ‘SET  THE  YEAR’  will  be  displayed.  To change the year, press the   or  buttons until the correct year is shown. The message ‘IS YEAR OK?’ will be displayed. Press the green  button to confirm the year is correct. If you have made a change, and the date is a valid date, the message ‘DATE SAVED’ will show, and you can move to the next step. If the date you  set  was  not  valid,  for  example  31  September,...

6

PROGRAMMING YOUR ST9400S
The Built-in Programmes
The  built-in  programmes  give  you  a  starting  point  that  you  can  personalise  to  your own  requirements.  Your  Installer  should  have  selected  one  and  ticked  the  box alongside it. If there is no tick, the product normally leaves the factory with Profile A installed, but it is a simple matter to select one of the other profiles (see Changing the Installer Parameters, page 12).
 Built-in Programme (Profile A)
ON 1OFF 1ON 2OFF 2ON...

7

PROGRAMMING YOUR ST9400S
Reviewing the Programme Times
To review your hot water programme, move the slider to the HOT WATER position. 
To review your heating programme, move the slider to the HEATING position.
To  review  the  programme  times,  press  the   button  repeatedly.  The  appropriate ON  and OFF  markers  will  be  displayed  to  show  you  which  time  is  being  reviewed. Any  of  these  times  can  be  adjusted  by  using  the    or   buttons,  and  then confirmed  using  the   button....



Note:  When  pressing  the   button  the  next ON  or OFF  marker  may  start  to  flash. This indicates you have tried to set a time equal to one of the next programme times already  in  the  memory.    Similarly,  when  pressing  the   button  the  previous ON  or OFF  marker  may  start  to  flash.  This  indicates  you  have  tried  to  set  a  time  equal  to one  of  the  previous  programme  times.  If  this  happens  the  ST9400S  simply  moves both times together as long as you continue...

9

PROGRAMMING YOUR ST9400S
Modifying the Heating Programme
The  heating  programme  has  two  pairs  of ON/OFF  switching  times  per  day.  Each time  can  be  set  between  3.00  am  and  2.50  am  (on  the  next  day)  to  allow  you  to programme the heating to stay on past midnight, if required. 
a. Move the slide switch to the HEATING position. ‘SET HEATING’ will show briefly to verify this action.
b. Now follow the same procedure to set the times as described in ‘Modifying the Hot Water...

10

OPERATING YOUR ST9400S
Choosing the Operating Mode (for Heating and/or Hot Water)
The operating mode may only be changed when the slider is set to the RUN position.
A  green INDICATOR  LAMP  shows  when  the  heating  or  hot water is switched ON.
Two MODE buttons are provided to select the Operating Mode and therefore how the heating and hot water are controlled.
Heating has four possible Operating Modes; these are OFF, AUTO, ONCE, CONT.  Pressing the heating MODE button scrolls round these modes...