Part # MCOSM06 Rev 1 (11/03/08) Page 15
Pressing the SETBACK key will cool the oven cavity to a
preprogrammed temperature (factory set at 250°F [121°C]).
The oven will automatically go into Setback mode after the
pre-programmed non-usage time, (see 'Changing Factory
Setback Program'). The display will indicate "SETB". This is an
energy-saving feature.
Pressing the COOL DOWN key will deactivate the heat, turn
the fan on high and light its LED. The display will indicate
"OPEN DOOR" if the door is closed, prompting the user to
open the door slightly. With the door open slightly the display
will indicate "COOL". The Cool Down will operate when the
door is closed or opened slightly. Optimal cool-down will be
achieved with the door open slightly. When the door opens
wider, the Cool Down mode will deactivate and the display
will indicate "DOOR". This is a patented safety feature. Pressing
the COOL DOWN key again will turn the LED o and stop this
mode. Pressing the ON/OFF key will also cancel Cool Down.
Cool Down is not active during a cook.
When the ON/OFF switch is pressed to turn the oven o and
the oven was above 200°F (93°C), the oven will go into an
Auto Cool Down mode. In Auto Cool Down, the oven will
run the fan on high until the oven cavity drops below 150°F
(66°C). During this time the display will indicate "AUTO".
When the oven temperature drops below 150°F (66°C) the
oven turns o. This feature protects the oven motor from pre-
mature failure. Optimal cool-down will be achieved with the
door open slightly.
Operating the Controls
Setting the cook temperature and time are done in the same
manner. Pressing the SET key will light the TEMP LED. The
operator then sets the temperature by rotating the dial on
the controller until the desired temperature is shown on the
display. Pressing the SET key a second time lights the TIME
LED and allows the operator to select the desired cook time as
shown on the display. Pressing the SET key a third time ends
the programming.
Pressing the START/CANCEL key will start the timing cycle.
The display will count down from the Set time in minutes and
seconds (solid colon) or hours and minutes (blinking colon)
the minutes and seconds. When the cycle is completed,
processing this key will also cancel the "DONE" prompt. To
cancel a timing cycle in progress, press and hold the START/
CANCEL key for 3 seconds.
Cook-N-Hold Operation
Pressing the COOK/HOLD (450 and 455 Controllers Only) key
activates the Cook-N-Hold mode and lights its LED. To verify
the proper hold temperature has been selected, press the SET
key twice. The display will show the hold temperature. At the
end of the cook cycle, an audible alarm will sound, the display
will ash "DONE" and change to count "UP" the hold time.
The oven will switch to the programmed hold temperature.