Warming Drawer WWD30-2
Electronic Control Info.
3-4
#814750 - Revision A - January, 2011
SYSTEM MODES:
The control can be placed into several different operational modes which changes preset conditions inside the warm-
ing drawer. Details as to what each mode does to the operation of the drawer can be found below.
POWER UP:
Power up is defined as the initial application of power to the appliance through the power cord; not to be confused
with switching the unit on/off with the “Power On/Off” key. During power up, all segments of the LCD will illuminate
for 5 seconds before the unit goes into off mode.
After entering unit off mode, display will show “PF” in the time display until user presses a key. If unit was previously
in a warming mode prior to power loss, control will also emit a power failure chime every 30 seconds while displaying
“PF” until the “Power On/Off” is pressed.
NOTE
:
Pressing any key will clear “PF” error and unit will operate normally.
ON MODES:
ON Modes control behavior of electrical components of the appliance when it is “ON”. Switching the unit on is
accomplished buy pressing the “Power On/Off” key. When ON, any back lighting will immediately activate “- - -” will
be displayed in the temperature display with the respective temperature scale (F or C) blinking. (
See Figure 3-4
)
NOTE
:
If no other key is pressed within 20 seconds, unit will switch off.
NORMAL WARMING MODE:
Normal warming mode is the basic operating mode when power is turned on and any warming function is selected.
This will include heating by the element and circulation of air by use of the fan.
Mode Entry:
The unit can be placed into a normal warming mode by simply pressing the “Power On/Off” key followed by either
“TEMP” up or down arrow keys, or any preset is pressed. (
See Figure 3-4
)
NOTE
:
If no other key is pressed within 20 seconds, unit will switch off.
Operations:
Once unit is turned on and “TEMP” up or down arrow is pressed, unit will initiate at 120°F and can be adjusted in
increments of 1°F. If you press and hold either arrow, the display will increase by 1° each 1/2 second until the first 5°
increment is obtained then will increase by 5° per 1/2 seconds. (
See Figure 3-5
)
NOTE
:
Temperature is adjustable from 80°F to 200°F (26.7°C to 93.3°)
Mode Exit:
Pressing “Power On/Off” key will terminate Normal Warming Mode and shut unit off.
NOTE
:
The mode will also exit by reaching ‘0:00,’ on the timer. At this point, ‘0:00’ will begin flashing and the ele-
ments and fan will shut off. The control will also yield three chimes every 30 seconds to denote unit has shut off.
After 5 minutes the timer will self power down if the “Power On/Off” key is not pressed.
TIMER
PROOF
LOW
PRESETS
HIGH
MED
TEMP
POWER
ON/OFF
PROOF
F
TEMP
TEMP
TEMP
ON
TIMER
Figure 3-5. Temperature Adjustment in Normal Warming Mode.
TIMER
PROOF
LOW
PRESETS
HIGH
MED
TEMP
POWER
ON/OFF
PROOF
F
TEMP
TEMP
TEMP
ON TIMER
Figure 3-4. Power On Mode.
