ST9400C – User Guide
Contents
1. GETTING STARTED WITH YOUR ST9400C d The year digits will now be flashing and SET THE YEAR will be displayed To f 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 the message INVALID will show and you will be returned to the start of the date setting operation The time will now be flashing and the message SET THE TIME will be displayed To change the time press the or buttons until the correct time is shown Each press of the button will change the time by one minute Holding the button down for more than a few seconds will change the time slowly at first then quickly The message IS TIME OK will be displayed Press the green button to confirm the time is correct If you have made a change the message TIME SAVED will show followed quickly by DATE TIME COMPLETE Move the slider to the RUN position to complete setting the date and time Note if the slider is moved at any time before the date and time have been set correctly the message DATE UNCHANGED will be displayed briefly and your changes will not be saved Step 2 Running a Built in Programme2. Day of Week Indicator Holiday Button Q Heating Operating Mode Indicator Copy Day Button Q Heating Extra Hour Button 17 ext Day Button O Heating Indicator Lamp D Hot Water Override Button Heating Override Button Hot Water Indicator Lamp D Slider 20 Hot Water Extra Hour Button Keep this document in a Home Information Pack Contents WHAT IS A PROGRAMMER General Descriptio EEEE 3 The way touse a Programet cecscccevescvessteeusceeessceds desnengeedhesteasrsasstacescesses 3 GETTING STARTED WITH YOUR ST9400C Step 1 Setting the Date amp Time seireun ennaint 4 St p 2 Running a Built in Program Me csccceccessiesasensvsceserenavecenesterasicrsnanaaeaes 5 PROGRAMMING YOUR ST9400C The Built in Programmes Your Personal Programme Reviewing the Programme Times Modifying the Hot Water Programme ccccceeseeeeeeeeeeeeeeeteeeeteeenteeeeeens Copying one day s Programme to another day ccccceeeeeeteeeees Programming a Different Day e Exiting HOT WATER Programming Mode Modifying the Heating Programme Exiting HEATING Programming Mode Disabling Enabling Time Periods sicnacccccecstecascocuvvespaunss smmnamarcncecesnceassassaunrees OPERATING YOUR ST9400C Choosing the Operating Mode savunosa EAA 10 Override the Operation Without Changing the Programmes OODOCMHMHNNDAD The Extra Hour Function Al The Holiday FUNCTIONS vessssesevciacanss
3. operation Automatic time change 1 day or 5 2 day or 7 day operation Number of ON OFFs per day Default programme Set as Mini Programmer Note It is Honeywell Options am pm display Installer Configured tick appropriate box 24hr display Off On if button pressed On continuously Enabled Disabled 1 day operation 5 2 day operation 7 day operation 2 on offs per day 3 on offs per day A standard b at home C economy Sundial recommended that gravity circulation hot water are fitted with a suitable hot water control C Plan system see ST9400A ST9400C systems in the Installation valve as shown Instruction sheet If so then there is no need to set the ST9400C as a Mini Programmer 18 50022737 005 A
4. 6 30am 9 30am 12 00pm 1 00pm 4 30pm _ 11 00pm Built in Programme Profile C ON 1 OFF 1 ON 2 OFF 2 ON3 OFF 3 Monday to Heating 6 30am _ 7 30am 2 00pm 12 00pm 5 00pm _ 10 00pm Friday Hot Water 6 30am 7 30am 12 00pm 12 00pm 5 00pm 10 00pm Saturday amp Heating 8 30am _ 9 30am 2 00pm 1 00pm 5 30pm_ 10 30pm Sunday Hot Water 8 30am 9 30am 12 00pm 1 00pm 5 30pm 10 30pm Your Personal Programme The table below has been left blank for you to record your own personal programme ON1 OFF 1 ON 2 OFF 2 ON3 OFF 3 Monday Heating Hot Water Tuesday Heating Hot Water Wednesday Heating Hot Water Thursday Heating Hot Water Friday Heating Hot Water Saturday Heating Hot Water Sunday Heating Hot Water 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 OK 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 OK button Remember to return the slider to the RUN position after reviewing is complete Modifying the Hot Water Programme The hot water programme has three pairs of ON OFF switching times
5. With the date and time correct your ST9400C Programmer will now be operating to the built in programmes These have been designed to provide heating and hot water at typical times throughout the day but if you want to customise the settings please see the next section PROGRAMMING YOUR ST9400C page 6 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 is no tick the product normally leaves the factory with Pr matter to select one of the other profi Built in Programme Profile A ofi icked the box alongside it If there e A installed but it is a simple es see Changing the Installer Parameters page 12 ON 1 OFF 1 ON 2 OFF 2 ON 3 OFF 3 Monday to Heating 6 30am _ 8 30am 2 00pm 00pm 4 30pm 10 30pm Friday Hot Water 6 30am 8 30am 12 00pm 1 00pm 4 30pm_ 10 30pm Saturday amp Heating 6 30am _ 9 30am 2 00pm 00pm 4 30pm _ 11 00pm Sunday Hot Water 6 30am 9 30am 12 00pm 1 00pm 4 30pm 11 00pm Built in Programme Profile b ON 1 OFF 1 ON 2 OFF 2 ON3 OFF 3 Monday to Heating 6 30am _ 9 30am 2 00pm 00pm 4 30pm 11 00pm Friday Hot Water 6 30am 9 30am 12 00pm _ 1 00pm 4 30pm 11 00pm Saturday amp Heating 6 30am _ 9 30am 2 00pm 00pm 4 30pm _ 11 00pm Sunday Hot Water
6. programme b at home C economy Configure 7 0 1 0 standard Programmer Mini Programmer 1 Mini Programmer This will be set by your Installer and will depend on your system do NOT change without contacting installer Reset all parameters 1 0 1 0 do not reset 1 default parameters 12 FINE TUNING YOUR ST9400C To Enter Installer Mode a Ensure the slider is in the RUN position then press and hold and buttons together for 8 seconds Ignore the NOT VALID message that is displayed for a few seconds The message SET UP MENU will show briefly followed by SET INSTALLER OK Press the button to take you into the Installer Mode Parameter Menu Parameter 1 is now available to change This is to allow you to change the clock format from 12 hour AM PM to 24 hour At every step the LoT Display will inform you what the parameter means and what option you have selected The parameter number is shown on the display separated by a colon from the parameter value You can change the parameter value by pressing the or amp buttons At this point the description in the LoT Display will change and the parameter value will flash If you press the value will stop flashing and be saved for use Press OR to move to the next parameter available for editing Keep pressing to step around the list of parameters and use or buttons to change the parameter value Any pa
7. buttons pressed the message MOVE SLIDER will be displayed Press a button to finish programming or move the slider to the RUN position 16 MINI PROGRAMMER OPERATING INSTRUCTIONS Disabling Enabling Time Periods To disable any of the time periods ON 1 to OFF 1 ON 2 to OFF 2 or ON 3 to OFF 3 simply set the ON time and its paired OFF time to the same time and the programme will just ignore them To re enable the time period simply set the two ON and OFF times to be different Choosing the Operating Mode In a Mini Programmer some Operating Modes are not possible For example HEATING in AUTO mode and HOT WATER in OFF mode is not allowed When configured your ST9400C knows which combinations of Operating Mode are possible and only permits those combinations that are allowed Override and Extra Hour Functions When you use the hot water OVERRIDE or EXTRA HOUR functions they will operate as normal However the heating OVERRIDE or EXTRA HOUR functions will also bring on the hot water This is a consequence of the type of system you have and is perfectly normal Other Functions All other functions operate the in the same way as for the standard ST9400C 17 CONFIGURATION amp SERVICE DATA Configuration Data to be completed by Installer The table below is for the Installer to complete to indicate how your ST9400C has been configured Configurable Features 24hr or am pm clock display Display backlight
8. is left in HOT WATER Programming mode for more than 10 minutes without the slider being moved or any buttons pressed the message MOVE SLIDER will be displayed Press a button to finish programming or move the slider to the RUN position Modifying the Heating Programme The heating programme has three 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 HOT WATER HEATING DAY TIME SET HEATING HOT WATER HEATING RUN Honeywell b Now follow the same procedure to set the times as described in Modifying the Hot Water Programme page 7 steps b to i Exiting HEATING Programming Mode To exit HEATING programming mode move the slider to the RUN position This can be done at any time during the programming process and any changes made and confirmed with the R button will have been saved Note If the unit is left in HEATING Programming mode for more than 10 minutes without the slider being moved or any buttons pressed the message MOVE SLIDER will be displayed Press a button to finish programming or move the slider to the RUN position Disabling Enabling Time Periods for Heating and or Hot Water To disable any of the time periods ON 1 to OFF 1 ON 2
9. 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 hot water to stay on past midnight if required a Move the slider to the HOT WATER position SET HOT WATER will show briefly to verify this action HOT WATER HEATING DAY TIME SET HOT WATER O HOT WATER O HEATING RUN A Honeywell G amp D b SET ON TIME 1 will then be displayed and the time setting for the first ON 1 time for MONDAY will now be flashing to indicate it can be changed If you do not wish to change the time press the green button and move to the next step If you do wish to make a change use the or buttons to change the first ON 1 time Each press of the button will change the time by 10 minutes As soon as the time has been changed the message ON TIME 1 OK will be displayed Press the green button to confirm the time is correct and move to the next step SAVED will be displayed for a moment to confirm that any change has been saved to memory g HOT WATER HEATING MON TIME I OK me AM E LIV p E Lf ONT ON2 OND OFF1 OFF2 OFF HOT WATER HEATING IMONE SET ON TIME N 7 be ONIX on2 OND OFFI OFF2 OFF3 a Honeywell a za ae Honeywell D Note When pressing the button the next ON or OFF marker may start to flash This indicates you have tried to set a time equa
10. possible problems with ST9400C For further assistance please contact your Installer Symptom ST9400C has a blank LCD display ST9400C indicates that Heating and or Hot Water are ON but radiators are cold and or taps are running with cold water ST9400C shows the message INTERNAL FAULT When the slider is moved to the HOT WATER position the display shows NOT VALID Possible Cause No power to the heating system Check that there is power to the heating system Fault in ST9400C Temperature controls are switched off or set too low Call Installer Check that the temperature controls in the system are set to appropriate levels Boiler or other system controls have malfunctioned Fault in ST9400C ST9400C has been configured as a Mini Programmer Call Installer Call Installer Check the Contents page of this booklet or the Configuration amp Service Data section page 18 to see if your ST9400C has been configured as a Mini Programmer Call Installer to check if this is correct for your heating system 15 You need only refer to this section if e The Mini Programmer box is ticked on the Contents page of this booklet or e The ST9400C Configuration Data page 18 indicates it is set as a Mini Programmer What is a Mini Programmer In a poorly controlled gravity circulation hot water system whenever the boiler comes on to service the heating there will in
11. s Programme to another day example Monday to Tuesday f Whilst the day is showing Monday Press the COPY DAY button The message COPY MON TO TUESDAY OK will be displayed and the letters TUE will flash to indicate the programme for Monday can be copied to Tuesday To select a different day to copy to press the NEXT DAY button to cycle through the days With each press of the NEXT DAY button the message will change to indicate the new day you are copying to When the required day is indicated press the green button to confirm and the message MON COPIED will be displayed for a moment The day into which Mondays programme has been copied is now available to have its programme edited Note Once a day s programme has been confirmed in this way it now becomes the day whose programme is copied if the COPY DAY button is pressed again OR Programming a Different Day Press the NEXT DAY button to select the next day which is displayed along the top of the screen The programme for that day can then be adjusted by following steps b e above Programmes for the remaining days can be set in the same way using the NEXT DAY button to move to the next day Exiting HOT WATER Programming Mode To exit HOT WATER programming mode move the slider to the RUN position This can be done at any time during the programming process and any changes made and confirmed with the button will have been saved Note If the unit
12. CE xz RECOMMENDED PLEASE RESPECT YOUR ENVIRONMENT Take care to dispose of this product and any packaging or literature in an appropriate way WHAT IS A PROGRAMMER an Explanation for Householders as recommended by the Energy Savings Trust Programmers allow you to set On and Off time periods Some models switch the central heating and domestic hot water on and off at the same time while others allow the domestic hot water and heating to come on and go off at different times Set the On and Off time periods to sui your own lifestyle On some programmers you must also set whether you want the heating and ho water to run continuously run under the chosen On and Off heating periods or be permanently off The time on the programmer must be correct Some types have to be adjusted in spring and autumn at the changes between Greenwich Mean Time and British Summer Time You may be able to temporarily adjust the heating programme for example Override Advance or Boost These are explained in the manufacturer s instructions The heating will not work if the room thermostat has switched the heating off And if you have a hot water cylinder the water heating will not work if the cylinder thermostat detects that the hot water has reached the correct temperature Clarity approved by Plain English Campaign This product and its associated documentation and packag
13. Function The Holiday function allows you to switch off your heating and hot water for a specified number of days from 1 99 days This lets you save energy and related costs when you are away from home but resumes normal operation on the day of your return To set the Holiday function a Ensure the slider is in the RUN position then press the HOLIDAY button once The message SET HOLIDAY will appear briefly followed by SET DAYS AWAY b Use the or buttons to set the number of days you will be away The display will show the number of days and this number will be flashing to indicate it can be changed The day of the week will also keep changing to show the day you return c If you have made a change to the number of days the message DAYS AWAY OK will appear Press the green button to confirm your selection d The message SAVED will be displayed for a few seconds followed by the date you return to enable you to check you have programmed the holiday function correctly e During the holiday period the LoT Display will show the message ON HOLIDAY and the display will count down the number of days till you return To cancel the Holiday function f To cancel the Holiday function just press the HOLIDAY button again The LoT Display will show CANCELLED and the unit will return to normal operation Note while setting the Holiday function if there is a gap of more than 1 minute bet
14. eccacseccecase ena EAEAN t4 FINE TUNING YOUR ST9400C Changing From AM PM Time display to the 24 hour ClOCK 0 12 Changing the Installer Parameters 0 c cece eeeeeeeeeneeeneeeeeereneeneeeenees 12 FAQ amp TROUBLESHOOTING How do set the time only if the ST9400C clock is not correct What do do when the clocks go back in October and forward in What should do if get lost while programming the ST9400C What happens if there is a power failure 0 0 0 0 eee i Troubleshooting GUJ Esere rine Tr aieea MINI PROGRAMMER OPERATING INSTRUCTIONS Installer to tick if configured in this way Modifying the Heating amp Hot Water Programme Exiting HEATING amp HOT WATER Programming Mode 0 cccceceseeeeeee 16 Disabling Enabling Time Periods ccccccceceeseecceeeeeeeeeeneseseeeeeneeneeseeeeenees I7 Choosing the Operating Mode Override and Extra Hour Functions A7 Other FUMCHONS ecserin nin aion riea aE OS EEREN 17 CONFIGURATION amp SERVICE DATA Configuration Data to be completed by Installer 00 cece 18 Boiler amp System Service LOG 0 ccesseeceeesteesseeeneeeceseesaeeecnerseeeseeeseeeeneens 19 Boiler amp System Service Log The space below can be used to provide a record of boiler amp system services and the names and contact numbers of the Installer and Service Personnel This information is important for a Home Information Pack Gen
15. eral Description Your Honeywell ST9400C 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 ST9400C 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 With 7 day programming and up to 3 on off periods per day every day can be set differently and heating and hot water can be set at different times from each other The following instructions explain how to programme and use the ST9400C to provide the most home comfort at the least cost The way to use a Programmer Think about the time periods when you are typically in the house and when you are not and also the times when you use a lot of hot water These are the times you should use as the basis for the programmes It will be necessary to allow some heat up time for the heating system after periods when it has been off this would typically be 1 1 hours depending on your house and your preferences Other features are commonly available on the Programmer to enhance comfort and convenience for example OVERRIDE EXTRA HOUR and MODE buttons A typical use of the OVERRIDE feature is when you return home unexpectedly for the rest of the day and the heating is off Just press the OVERRIDE button and the heating will come on until the next progra
16. evitably be some circulation though the hot water storage tank which will then heat up So whenever the HEATING is ON the HOT WATER is also ON It is therefore NOT possible to have independent programmes for heating and hot water so it is only necessary to enter one time programme If you have this type of installation gravity circulation hot water circuit WITHOUT a hot water control valve your Installer should have restricted the ST9400C Programmer to be a Mini Programmer This section describes how to use the product as a Mini Programmer Modifying the Heating amp Hot Water Programme The heating amp hot water programme has three 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 amp hot water to stay on past midnight if required a Move the slider 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 Programme page 7 steps b to i Exiting Heating amp Hot Water Programming Mode To exit HEATING Programming mode move the slider to the RUN position This can be done at any time during the programming process and any changes made and confirmed with the button will have been saved Note f the unit is left in HEATING Programming mode for more than 10 minutes without the slider being moved or any
17. ing are protected by various intellectual property rights belonging to Honeywell Inc and its subsidiaries and existing under the laws of the UK and other countries These intellectual and property rights may include patent applications registered designs unregistered designs registered trade marks unregistered trade marks and copyrights Honeywell reserves the right to modify this document product and functionality without notice This document replaces any previously issued instructions and is only applicable to the product s described This product has been designed for applications as described within this document For use outside of the scope as described herein refer to Honeywell for guidance Honeywell cannot be held responsible for misapplication of the product s described within this document Manufactured for and on behalf of the Environment and Combustion Controls Division of Honeywell Technologies Sarl Ecublens Route du Bois 37 Switzerland by its Authorised Representative Honeywell Inc Honeywell Control Systems Ltd Arlington Business Park Bracknell Berkshire Honeywell RG12 1EB 50022737 005 A 2007 Honeywell International Inc Technical Help Desk 08457 678999 www honeywelluk com Honeywell A EXTRAHOUR a OVERRDE J J OVERRIDE me ST9400C User Guide 7 day Programmer 2 channel 3 on off per day This document is to be left with the user and forms part of a Home Info
18. l 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 ST9400C simply moves both times together as long as you continue to press the or buttons Follow the procedure in Reviewing the Programme Times page 7 to check and adjust these times as necessary c SET OFF TIME 1 will be displayed and the first OFF 1 time will now be flashing If you do not wish to change the time press the green button and move to the next step Otherwise use the or buttons to change the time Press the green button to confirm the time is correct and move to the next step SAVED will be displayed for a moment to confirm that any change has been saved to memory The remaining ON and OFF times ON 2 OFF 2 ON 3 OFF 3 can be set by using the or buttons to change the time and the green button to confirm the time is correct and move to the next step If you do not wish to change the time just press the green Ok button to move directly to the next ON OFF time without making any changes After setting or reviewing the last off time OFF 3 the message COMPLETE will be displayed to indicate the times for Monday have been set You now have a choice of how to set the programme for the next day Copying one day
19. mme time at which point it will follow the normal programme The advantage here is that you do not have to remember to switch off because the normal time programme does this for you A typical use of the EXTRA HOUR button would be if you returned to the house for a short period when the heating and hot water were off Pressing the appropriate EXTRA HOUR button gives you 1 2 or 3 hours of heating exactly when you need it Another typical use is when the heating is already on and you want it to stay ona little longer just press EXTRA HOUR and for that day only an hour will be added to the end of the time at which heating normally goes off The MODE buttons allow you to select how you want to operate heating and hot water independently The most obvious use is to switch heating OFF during the summer months but you may also use this feature if you take a mid week day off work you can then set the MODE to ONCE to keep the system ON during the day from the first programmed ON time till the last programmed OFF time Your ST9400C 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 ST9400C will display text messages at every stage to help you get the most out of your central heating and hot water system The ST9400C uses LoT Technology to constantly update the display to give
20. peration Without Changing the Programmes In AUTO and ONCE operating modes the OVERRIDE buttons switch the heating or hot water ON or OFF without altering the programme When the indicator lamp is ON pressing the OVERRIDE button switches the heating or hot water OFF until the next programmed ON time When the indicator lamp is OFF pressing the OVERRIDE button switches the heating or hot water ON until the next programmed OFF time The LoT Display will provide you with information about the override 10 The Extra Hour Function for Heating and or Hot Water The EXTRA HOUR buttons allow you to switch the heating or hot water ON for up to 3 extra hours without altering the programme Pressing either button once will give one extra hour The LoT Display will display the message 1 HOUR to confirm the button has been pressed When the green INDICATOR LAMP is OFF pressing an EXTRA HOUR button switches the heating or hot water ON for just one hour When the green INDICATOR LAMP is ON pressing an EXTRA HOUR button extends the programmed ON period by one hour Further presses of the EXTRA HOUR buttons will increase the extra hour period by one hour for each button press up to a maximum of 3 hours The LoT Display will continue to provide information on the extra hour status To cancel the extra hours just keep pressing the EXTRA HOUR button until the CANCELLED message appears on the LoT Display The Holiday
21. r system contains a room thermostat and a hot water thermostat and that both are set to appropriate temperature levels typically 20 C for the room temperature and between 55 60 C for the hot water temperature Programme your heating and hot water to be off when you are not in the house If you are concerned about possible frost damage to any exposed pipe work it is advisable to fit a frost protection system your installer can advise you about this Think about how you use your domestic hot water if you have a storage system it is not necessary to have this switched on all the time even when you are in the house Consider the heat up times required for your central heating Every home responds differently when the heating is switched on Adjust the start time so that you are not cold when you get up in the morning A shorter heat up time is required for other heating periods In the evening when the house is up to temperature it is often possible to switch off the heating up to an hour before you go to bed without any noticeable reduction in comfort ST9400C Controls Layout hps 10 oe wri Sl aM me OL 1H co ON1 ON2 gt ons OFF1 OFF2 OFF3 Honeywell Hot Water Operating Mode Indicator 11 Heating Operating Mode Button 2 Time Display 12 OK Next Button LoT Technology Display Clock and Buttons O Programme Time Markers 14 Hot Water Operating Mode Button
22. rameter changes that have been confirmed with the button will be saved and used To Exit Installer Mode h You can exit Installer Mode at any time by moving the slider to the next position and then back again to RUN Note Installer Mode will exit automatically after 10 minutes if the slider is not moved 13 How do set the time only if the ST9400C clock is not correct Your ST9400C contains a very accurate digital clock that is factory pre set Should you ever need to change the time just follow this procedure a Move the slider to the DAY TIME position b Keep pressing the green OK button until the message SET THE TIME is displayed To change the time press the or buttons until the correct time is shown The message IS TIME OK will be displayed Press the green button to confirm the time is correct If you have made a change the message TIME SAVED will show followed quickly by DATE TIME COMPLETE c Move the slider to the RUN position to complete changing the time What do do when the clocks go back in October and forward in March Your ST9400C is factory set to adjust the clock automatically at the correct dates so you should never need to adjust the clock forward or backwards yourself It is possible to disable this particular feature as described in the section Changing the Installer Parameters page 12 You may also check the section Configuration amp Ser
23. rmation Pack EXTRA HOUR 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 operational assistance as and when required Extra Large LCD Liquid Crystal Display with Backlight provides added user friendliness and clearer viewing even in the dark Independent 7 day Heating amp Hot Water Programmes let you choose settings built into ST9400C for each day of the week to match your lifestyle while maximising energy savings or alter them to your personal settings Automatic Summer Winter Time Change will adjust the clock forward and backward automatically when the clocks change saving you having to change your ST9400C every time Built in Memory holds your programme indefinitely even if the mains power fails Energy Efficiency and the Environment Home energy use is responsible for more than of the total UK carbon emissions which contribute to climate change Heating and hot water systems based on b c oilers account for of this figure so it is important to understand how your ontrols can help to maximize energy efficiency while maintaining your comfort Your Programmer should be used in conjunction with appropriate temperature Cc ie 1 ontrols In order to save energy the following general points should be bserved Ensure you
24. to OFF 2 or ON 3 to OFF 3 simply set the ON time and its paired OFF time to the same time and the programme will just ignore them To re enable the time period simply set the two ON and OFF times to be different 9 Choosing the Operating Mode for Heating and or Hot Water The operating mode may only be changed when the slider is set DAY TIME to the RUN position HOT WATER A green INDICATOR LAMP shows when the heating or hot water is switched ON HEATING RUN 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 in sequence and the display indicates which mode is currently active HOT WATER HEATING SAT HOT WATER HEATING SAT 19 05 2910 9 06 2010 PUP pu ie a cor Mala 4 conr or AT lt uTo gt ao OFF OFF A Honeywell Honeywell e OFF mode The heating will remain OFF e AUTO Automatic mode The heating will be switched ON and OFF according to the heating programme e ONCE mode The heating will come ON at the first programmed ON time and go OFF at the last programmed OFF time e CONT Continuous mode The heating will remain ON continuously The hot water MODE button operates in the same way as described above for the heating MODE button Overriding the O
25. vice Data page 18 to see how your Installer has configured your product What should do if get lost while programming the ST9400C The LoT Display on ST9400C will provide you with help and tips to work through the programming Should you ever get lost the simplest thing to do is to move the slider to the RUN position and then move it back to the appropriate programming position where you got lost At this point just follow the instructions again What happens if there is a power failure In the event of a mains power failure the ST9400C display will go blank the indicator lamps will go out and the control outputs will switch off The real time will be constantly maintained by means of the built in battery backup ready to power back up as if nothing had happened when the mains power is restored In addition all programmes and settings are stored in a special memory called NV memory which requires no power to maintain information and so will be retained indefinitely Should the correct time and date ever be lost for whatever reason the message SET DATE TIME will be displayed whilst the slider is in the RUN position In this case simply follow the procedure described under Step 1 Setting the Date amp Time page 4 It should not be necessary to make any changes to your programmes 14 FAQ AND TROUBLESHOOTING Troubleshooting Guide This is a quick guide to help you diagnose and cope with
26. ween button presses the function will cancel itself automatically and return to normal operation 11 FINE TUNING YOUR ST9400C Changing from AM PM Time Display to the 24 Hour Clock Your ST9400C 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 ST9400C 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 Default Options Description PARAMETER Number Value 24hr or am pm 1 12 12 24 12 am pm display clock display 24 24hr display Configure backlight 2 2 0 1 2 O off operation 1 on if button pressed 2 on continuously 3 1 0 1 Enable disable auto i 0 disabled time change 1 enabled 1 day or 5 2 day or 4 7 1 5 7 1 1 day operation 7 day operation 5 5 2 day operation 7 7 day operation Number of ON OFFs 5 3 2 3 2 2 on offs per day per day 3 3 on offs per day Select default time A A b C A standard
27. you feedback about what is required Step 1 Setting the Date amp Time Your ST9400C had the date and time set at the factory and these are normally maintained by a backup battery in the event of power failures If you wish to change the date or time or if the LoT Display shows the message SET DATE TIME just follow the instructions below Otherwise go to Step 2 a Move the slider to the DAY TIME position The message SET DATE TIME will show briefly on the screen followed by SET THE DAY and the day of the month will now be flashing to indicate it can be changed HOT WATER HEATING DAYTIME SET JHE DPY HOT WATER ta J HEATING i 4 RUN a Honeywell b To change the day of the month press the or buttons until the correct day is shown Each press of the button will change the date by one day As soon as a change has been made the message IS DAY OK will be displayed Once the correct day is reached press the green button to confirm and move to the next step If you do not need to make a change just press the Ok button immediately and this will move you to the next step c The month digits will now be flashing and SET THE MONTH will be displayed To change the month press the or buttons until the correct month is shown The message IS MONTH OK will be displayed Press the green button to confirm the month is correct and move to the next step
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