using a stove, more gas is needed to keep a pan of water boiling
than to just keep it warm.)
• The PROG – PROG switches are deactivated by factory default
(their start time is ), but they can be activated at need. Their
start time can be freely set between and at 10-minute
intervals given the constraint, that their start time should be in
increasing order and a difference of at least 10 minutes should
be between them. This minimum 10-minute difference is going
to be preserved even if a previously activated switch is modied,
in order to avoid co-occurring or overlapping switches. In such
a case, the device automatically increases the start time of the
affected switches until a difference of at least 10 minutes between
them is reached. If the start time of a switch would be later than
because of this automatic modication, then that switch is
deactivated instead.
20