Honeywell ST6400A - Programmer Manual

INTRODUCTION

The ST6400A programmer controls your central heating system. It will enable you to select the times when heating and hot water are switched ON and OFF.

FEATURES

• 24 hour heating programme.
• 24 hour hot water programme.
• Two ON/OFF switching times per day.
• Built-in programme with typical ON/OFF times.
• Override buttons for heating and hot water.
• Extra hour buttons for heating and hot water.
• Built-in battery to prevent loss of programme during power cuts.
• 12 hour am/pm or 24 hour clock format.

The ST6400A and other Honeywell controls in your central heating system will provide comfortable temperatures in your home when you want them.

12 HOUR AM/PM or 24 HOUR CLOCK DISPLAY

Your programmer can operate on 12 hour am/pm or 24 hour clock formats. To change the format, ensure the setting slider is in the RUN PROGRAMME position then press the + and - buttons together for about 5 seconds. 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.

SETTING YOUR PROGRAMMER

SETTING THE CORRECT TIME

To set the correct time, open the flap on the front of the programmer.

STEP1

Move the setting slider to the SET TIME position. The time on the display will now be flashing to indicate it can be changed.

STEP 2

To change the time, press the + or - buttons until the correct time is displayed.
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.

STEP 3

Moving the setting slider to the next position completes setting the time.

SETTING THE HOT WATER PROGRAMME

The hot water programme has two 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 hot water to stay on past midnight, if required.

STEP 4

Move the setting slider to the SET HOT WATER position. The words HOT WATER will now be visible on the display and the first ON time will now be flashing.

STEP 5

Use the + and - buttons to set the first ON time. Each press of the button will change the time by 10 minutes.

STEP 6

Press the NEXT ON/OFF button once to display the first OFF time. Set this time using the + and - buttons.

STEP 7

By pressing the NEXT ON/OFF and + or - buttons the remaining ON/OFF times can be set.

NOTE*

1. When pressing the + button, the next ON or OFF marker may start to flash. If this happens the next programme time will have been changed. Press the NEXT ON/OFF button to check and adjust this programme time if necessary.
2. When pressing the - button, the previous ON or OFF marker may start to flash. If this happens the previous programme time will have been changed. Follow the procedure in "REVIEWING PROGRAMME TIMES" to check and adjust this time if necessary.

Moving the setting slider to the next position completes setting the hot water programme.

SETTING THE HEATING PROGRAMME

The heating programme has two 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 after midnight if required.

STEP 8

Move the setting slider to the SET HEATING position. The word HEATING will now be visible on the display and the first ON time will be flashing.

STEP 9

The required heating programme can now be set by following the same procedure as "SETTING THE HOT WATER PROGRAMME" in steps 5 to 7.

STEP 10

Moving the setting slider to the next position completes setting the heating programme.

REVIEWING PROGRAMME TIMES

To review your hot water programme move the setting slider to the SET HOT WATER position. To review your heating programme move the setting slider to the SET HEATING position. To review the programme times press the NEXT ON/OFF button repeatedly. Any of these times can be adjusted by using the + and - buttons.

IF DISPLAY REMAINS BLANK AFTER SWITCH ON - PRESS RESET

BUILT-IN PROGRAMME

PERSONAL PROGRAMME

OPERATING YOUR CONTROLLER

For normal operation the setting slider must be in the RUN PROGRAMME position. A red indicator lamp shows when the heating or hot water is switched ON.

Two sliders are provided to select how the heating and hot water are controlled.

The HEATING SLIDER has four positions:
OFF - The Heating will remain OFF.
AUTO - The heating will be switched ON and OFF automatically according to the heating programme.
ONCE - The heating will come ON at the first programmed ON time and go OFF at the last programmed OFF time.
CONT. - The heating will remain ON continuously.

The HOT WATER slider operates in the same manner as described above for the HEATING SLIDER.

EXTRA HOUR

The EXTRA HOUR buttons 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, and the words HEATING +1 HR or HOT WATER +1 HR show on the display to confirm the button has been pressed.
When the red indicator lamp is OFF, pressing the EXTRA HOUR button switches the heating or hot water ON for just one hour.
When the red indicator lamp is ON, pressing the 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 display will change to show the number of extra hours, for example HEATING +3 HR or HOT WATER +2 HR.
To cancel the extra hours, keep pressing the EXTRA HOUR button until the HEATING + (1,2 or 3) HR or HOT WATER + (1,2 or 3) HR disappears from the display.

OVERRIDE

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.

RESET

To reset the programmer back to the original built-in programme press the RESET button with the tip of a pen or pencil.

POWER FAILURE

Your programmer has a built-in battery to ensure correct operation after a main supply power cut. No action should be necessary following a power cut of up to 4 days. Longer power cuts may require you to re-programme.

Documents / Resources

Download manual

Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.

Download Honeywell ST6400A - Programmer Manual