SANDENVENDO AMERICA INC
1189085b ECN 52161
5
OPERATION
Display and Keypad
Timer Setting and Operation
Note: to help prevent keypad damage, push keypad buttons only with finger or thumb; do not
use fingernail, utensil, tool, pen, or other object.
Normal Operation
Pressing the power button turns the HFD on or off. When controller is off, all lamps, heaters,
displays and indicators are off.
Timers
When a timer is off, pressing the timer button once sets the countdown timer to the value
preprogrammed into the controller.
Pressing the timer button again within three seconds activates the timer adjustment mode and
sets the timer to one hour.
Each successive press (within three seconds) adds one hour to the time, up to four hours.
At four hours, the next button press cycles the timer back to one hour again.
Once the timer is activated, the LED next to the shelf timer button becomes green.
The display then reverts to HFD internal ambient temperature display.
While a timer is on, pressing a timer button once displays the remaining time for 4 seconds,
then shelf temperature for 4 seconds, and then the display reverts to the internal ambient
temperature display.
At 14 minutes remaining time, the LED blinks yellow.
When no time remains, the LED blinks red, plus a brief audible alarm sounds.
Pressing the timer button next to the blinking red LED clears the alarm and restarts the timer.
Holding down the Time button, then pressing a timer key, turns off the timer.
LED Display
Timers
Timers
Lower Left Shelf Heater
Temperature Adjustment and Timers
Middle and Upper Shelf Heater
Temperature Adjustment and Timers
Lower Right Shelf Heater
Temperature Adjustment and Timers
Power Button
Time Button
SD card slot
