Manual override
Temporary override (without disrupting the programming) can be carried out in three
ways:
1. In normal automatic mode press the / button. A hand symbol is visible in the
display, and the comfort / economy indicator changes. To cancel this selection
press the / button again.
2. In normal automatic mode press the up arrow. The existing set temperature
(comfort or economy) will be displayed. Now press the up or down arrow to
temporarily increase or decrease the temperature to the required level. A hand
symbol is visible in the display, and after a short delay the actual room
temperature will be seen.
Override 1 and 2 above will self-reset at the next programmed temperature
change.
3. In normal automatic mode press the up and down arrow buttons at the same
time. The lcd will show hand and frost symbols, and is now in ‘frost-protection’
mode. The boiler will be switched on only if the temperature falls below 7
0
C.
Override 3 is a permanent selection, and will only be cancelled by again pressing
the up and down arrow buttons at the same time.
Additional controls / specification details:
The TX has two additional buttons:
• A backlight button – press this once and a blue backlight will illuminate the
display for 15 seconds, or as long as buttons continue to be pressed, and will
then extinguish after a further 15 seconds. (Note that repeated use of the
backlight facility will reduce battery life)
• A ‘reset’ button – accessible only with (e.g.) a pencil or biro in the lower left
corner of the keypad array. Operation of the reset button will clear all inputs
and restore factory default settings. The time and day will revert to Monday
(day 1) and 00:00. P1 will be implemented (comfort temperature for 24
hours)
Inside the TX – accessible when inserting the batteries – is a 3-position ‘DIP’ switch.
These switches should be used if you wish to change either the ‘span’ (temperature
differential) or the operation mode. The default span is the minimum of 0.5
0
C, and
the default operation mode is ‘heating’. See the chart below for all setting options.
DIP Switch
1 2 3
Setting
OFF OFF X 4.0
0
C Span
ON OFF X 3.0
0
C Span
OFF ON X 2.0
0
C Span
ON ON X 1.0
0
C Span
X X OFF Cooler mode
X X ON Heater mode
N.B. these DIP switch settings are available for alternative applications of the
Towerstat RF transmitter. It is recommended that the Towerstat RF/BM DIP switch
settings are left in the default position which is all switches in ‘ON’ position
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