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CHOICE PR1

1 Channel Programmer

User Instructions

 Introduction

What is a central heating programmer...?  

Central Heating programmers allow you to set ‘On’ 

and ‘Off’ time periods for your heating and/or hot 

water. One Channel models switch your central heating 

and domestic hot water on and off at the same time, 

while the two and three channel versions control your 

domestic hot water and heating to come on and go 

off at different times. Three channel programmers 

are often used to provide separate control for two 

heating zones (perhaps upstairs and downstairs) 

as well as the separate control for your hot water. 

 

Sangamo Choice programmers make it easy to set the 

‘On’ and ‘Off’ time periods to suit your own lifestyle, with 

options for; 7 day, 5/2 day, and 24 hour programming. 

You can also choose to have your heating and hot water on 

continuously or be permanently off.  Choice programmers 

also adjust automatically between Greenwich Mean Time 

and British Summer Time. The Choice programmers even 

have a default set of programmes, so you can decide 

not to adjust the programming at all! And to improve 

your comfort, you can temporarily adjust the heating 

programme, with the Choice; ‘Advance’ or ‘Boost’ buttons.

 Programmer Summary

This programmer can automatically switch your central 

heating or hot water ON and OFF up to 3 times a 

day, at whatever times you choose. Timekeeping is 

maintained through power interruptions by a non-

replaceable battery designed to last for the lifetime 

of the programmer.  The clock is automatically put 

forward 1 hour at 1:00am on the last Sunday of March 

and back 1 hour at 2:00am on the last Sunday of 

 

October. The clock is factory pre-set to UK time and date, 

but you can alter the time setting if you wish.

During installation, the installer selects 24 hour, or 5 day/

2day, or 7 day programming and 2 or 3 on/off periods per 

day, via a 4 position DIP switch on the back of the unit 

(see installation instructions). 

IMPORTANT:  These settings should only be changed 

by a qualified person. Contact your installer.

IMPORTANT: This programmer is not suitable for 

the switching of devices greater than 6Amp rated. 

(e.g. Not suitable for use as an immersion timer) 

The large, easy to read display makes programming easy 

and the unit is designed to eliminate the possibility of ac-

cidental changes to your programme. Buttons normally 

visible only affect your set programme temporarily. All 

buttons which can permanently change your programme 

are located behind the flip-over fascia.

• 

The 24 hour programmer option runs the same 

programme every day.

• 

The 5 day/2 day programmer option allows differ-

ent ON/OFF times at week ends.

• 

The 7 day programmer option allows different ON/

OFF times for each day of the week

 Configuration

When setting time, date or changing programme times 

the first screen displayed indicates the configuration as 

set up by the installer. (See SETTING THE TIME section)

Configuration

Display

2 ON/OFF Pumped System

2PU

3 ON/OFF Pumped System

3PU

The 24 hour, or 5 day/2day, or 7 day programming option 

as set up by the installer can also be verified at this stage 

by how the Monday to Sunday indicators are displayed.

Programming 

Option

Mon to Sun Indicators 

flash

7 DAY

Mon to Sun individually shown

5/2 DAY

Mon to Fri together then Sat 

& Sun together

24 HOUR

Mon to Sun together shown

Now press any button to move to Setting the Time and 

Day.

 Built In Programme

For convenience, the programmer has a built in 

programme which will be satisfactory for many people, but 

which can be changed very easily (see section CHANGING 

PROGRAMME TIMES). Once the unit is powered up this 

built in programme will run. 

If the user changes from the built in programme and 

wishes to return to it, then pressing the reset button  with 

a non metallic pointed tool will return the unit to the built 

in / default programme.

 NOTE: Every time the reset is 

pressed, the time and date must be set again. 

See 

the sections SETTING THE TIME &  SETTING THE DATE

 Factory Programme Settings

2Pu

3Pu

Mon-Fri

Sat-Sun

1st ON

1st ON

6:00am

7:00am

1st OFF

1st OFF

8:30am

9:00am

-

2nd ON

12:00 noon

12:00 noon

-

2nd OFF

12:00 noon

12:00 noon

2nd ON

3rd ON

4:30pm

4:30pm

2nd OFF

3rd OFF

10:30pm

11:00pm

If the unit is installed as a 24 hour programmer the built 

in programme will be the same for each day (i.e. Sat-Sun 

be same as Mon-Fri above).

 Selecting Operating Mode

MODE

ON

Central Heating and Hot Water is ON 

continuously

AUTO

Central Heating and Hot Water will be 

switched ON or OFF as programmed

ALL DAY

Central Heating and Hot Water will be 

switched ON only once each day between 

the first ON time and last OFF time

OFF

Central Heating and Hot Water is OFF 

continuously

• 

Press the 

SET

  button  once.  The  configuration  setting 

will appear on the screen.

• 

Press the 

SET

 button again. The clock icon [1] on the 

screen will flash. 

• 

Press the 

+/- 

buttons to adjust the time. Time will 

change quicker if pressed continually.

• 

Press 

SET

 once to move on to setting the DATE or press 

multiple times to return to RUN mode.

 Setting The Time

[2]

[4]

[1]

[3]

[5]

• 

Press the 

SET

 button until the Y:XX icon (year) ap-

pears and the D (DATE) icon [2] flashes.

• 

Press the 

+/-

 button to set the year.

• 

Press 

NEXT

 button. M:XX appears (month).

• 

Press 

+/-

 button to set month.

• 

Press 

NEXT

 button. D:XX appears (Day).

• 

Press 

+/-

 button to set day.

You can review or edit the date you have set just by 

pressing 

NEXT

 button again and repeating the sequence 

above.  To  confirm  the  date  and  move  on  to  PROGRAM 

mode press 

SET

 button once or press 

SET

 button multiple 

times to return to RUN mode.

 Setting The Date

 Changing Programme Times

The built in programmes can easily be changed to better 

suit your lifestyle. 

To change the times:

 

• 

Press 

SET

  button  until  PROGRAM  [3]  flashes  in  the 

display and 1 ON [4] appears. This indicates the time 

shown on the display is the first ON time.

• 

By pressing the 

+/-

 buttons you can alter the ON time 

[6]

Fit & forget...

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