A hot beverage brewer (20) with an auto-directive brewer controller (22)
that controls enabling and revealing of a plurality of hidden, or
phantom, switches (39, 40, 42, 48, 50, 52, 54, 56, 58 and 60). Signals
from disabled switches are ignored by a microcomputer (24), and the
operator is directed to only the hidden switches that are enabled by
selectively revealing them with individually associated backlights (39',
40', 42', 48', 50', 54', 56', 58', and 60'). When the backlights are
energized the location of the hidden switches is revealed by the light
passing through a dark, but semi-translucent, flexible, plastic control
panel that overlies the hidden switches and their associated backlights.
Different modes of normal operation may be preselected during a program
mode (FIG. 12D) in which one or more of the brew start switches are
relatively permanently disabled and remain relatively permanently hidden,
while other ones of the start brew switches and other function selection
switches are only temporarily disabled and temporarily hidden due to
changing conditions or status of the brewer during normal operation. A
demonstration mode is provided in which the performance of the apparatus
under normal circumstances is performed but the heating element and
various valves are inhibited from being actuated. A self-diagnostic mode
is provided for selective use in combination with a normal operation
mode, a program mode and a self-diagnostic mode of operation.