Secure SCS317 User Instructions page 11

If the holiday period START date matches today's date, the
STANDBY temperature will be shown on the display together
with the suitcase icon.
If the holiday period START date does not match today's date
the display will remain in normal operating mode but with the
suitcase icon appearing on the right of the display. Indicating a
holiday period is pending
To cancel a set holiday programme in ADVANCE of its
activation, re-programme using the above procedure and set
the START date and BACK date to today's date.
To cancel a set holiday programme during activation press
ENTER button twice, the unit will return to normal operating
mode and the suitcase icon will disappear.
THE DATES SPECIFIED BECOME EFFECTIVE FROM
MIDNIGHT OF THE DAY ENTERED
11