7
Operation
If the colon is blinking the unit is in
run
mode. It will
automatically switch the underfloor heating on and off at
the times set. However, useful overrides are provided which
enable the user to to make temporary changes to the
on/off
times without re-programming the unit.
Manual overrides
When in
off
,
auto
or
allday
modes the
+1hr
button can be
used to switch from off to on for just one hour, or to extend
an existing period by one hour. This will be cancelled by
pressing the
+1hr
button again, pressing the
man
button
or when the next on programme is reached.
When in
auto
or
allday
modes pressing the
man
(manual)
button will switch from on to off, and vice versa. This override
will only last until the next programmed change, when the
automatic programming will resume, or until the button is
pressed again.
When the above overrides are selected a bar appears in the
display against the appropriate legend.
Reset
Should the timeswitch be disconnected from the mains a
small battery symbol will blink on the left of the display. After
the second midnight (between 24 and 48 hours) the display
will go blank and settings will be lost. When mains power is
restored it is recommended that the unit be reset by inserting
a non-metallic object such as a matchstick in the
r/s
hole
under the flap. This will restore the factory settings with the
time at 12:00 and Monday (
mo
) selected. The output will be
off. Note that the colon will be blinking, meaning that the unit
is in
run
mode and will switch on and off according to the
factory programming until reset.
Choice of 12- or 24-hour clock
At any time whilst in run mode the time displayed can be
toggled between a 12-hour clock with an am/pm indicator
or a 24-hour clock by pressing and holding both day and
next on/off
buttons for 1.5 seconds.
G.M.T./B.S.T.
To change from Greenwich Mean Time to British Summer
Time and vice versa while in
run
mode: press and hold
the
+
button to add one hour in Spring, or the
–
button to
put the clock back one hour in Autumn.
Factory pre-set programme
The unit will be pre-set to 7-day/24-hour mode; this can
be altered by moving the pins under the backplate. Firstly
remove the screws under the unit and remove the front face.
There are three operating modes available:
1
24 hour operation; the same programme
each day,
2
5-day/2-day operation; different
programmes for weekdays and weekends,
3
7-day operation; different programmes for
each day.
Set the pins as shown for the operating mode required.
The pre-set factory
on/off
times can be reinstated by pressing
the recessed
r/s
button with a non-metallic object such as a
matchstick. Please remember that underfloor heating takes
longer to warm up and cool down than conventional radiators
and the heat settings should reflect this. The factory settings
are unlikely to be appropriate.
1 2 3 4
1 2 3 4
1 2 3 4
Selecting the operating mode
Behind the flap is the red select button; each press changes the operating
mode as follows:
on
The output is constantly on.
off
The output is constantly off 1hr is pressed.
auto
The output switches on and off to the set programme.
allday
The output switches on at setting 1 and stays on until setting 6.
SELECT
PROG
NEXT ON/OFF
+
–
DAY
COPY
R/S
12:45
AM
MO
ON
OFF
AUTO
ALL DAY
+1HR
MAN
