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ST621TX INSTRUCTION MANUAL
MANUAL OVERRIDE SETTING
When the ST621TX is in NORMAL mode, press the Touch Ring
anywhere except the OK and Arrow keys to enter the Manual
Override mode. The currently set temperature will be displayed on
the LCD and will flash.
When the set temperature is flashing, press the Touch Ring and move your finger clockwise to increase
the set temperature, or anti-clockwise to decrease the set temperature. Press OK at any time to confirm
the selection. Note that the set temperature display will not flash while being adjusted – this is normal
and the display will start to flash again approximately 0.5 seconds after the Touch Ring is released.
The ST621TX will go back to NORMAL mode without changing the set temperature after 10 seconds
of inactivity, or after pressing the Arrow key.
When the ST621TX is operating in Manual Override mode, the LCD will
display MANUAL instead of AUTO. The manual setting will remain in
effect until the next programme time is reached, programme or clock
settings are changed, an operating mode change is detected or the
Manual Override mode is cancelled.
Manual Override mode can be cancelled at any time by pressing and
holding the Arrow key for 2 seconds – this will return the ST621TX to
AUTO mode.
If the ST621TX is in Frost,or Holiday or Service mode, the set temperature can’t be adjusted, only can
be reviewed.
