Owners Manual
17
OPERATIONS MANUAL
REACH-INS & ROLL-INS
a. The display will illuminate with the current cabinet
temperature.
b. The compressor icon, fan icon, and the aux heater icon
may flash for a period of time, indicating normal
delayed start-up.
c. After the start-up delay, the compressor and evaporator
fan(s) will start if the control is calling for cooling.
a. The SET-POINT is the preprogrammed temperature which
shuts off the compressor.
b. The DIFFERENTIAL is the preprogrammed temperature that
is added to the SET POINT temperature that will start the
compressor.
a. During defrost, the defrost icon will appear in the display
and the compressor will turn off until a preprogrammed
temperature or time is reached. During this time for freez-
ers only, the evaporator fan(s) will also turn off and the
defrost heater will be energized.
b. After a preprogrammed evaporator temperature has been
reached, there may be a short delay for both the compres-
sor and evaporator fan(s) to restart.
c. After the defrost cycle is completed, the control will
resume normal operation.
EXAMPLE: Set-Point 36°F and the differential is 4°F the com-
pressor will cycle off at 36°F and back on at 40°F.
COMPRESSOR
EVAP FAN
DEFROST
AUX HTRS
ALARM
ELECTRONIC CONTROL DISPLAY AND BUTTONS
The control icons shown above will be illuminated when the
associated function is active. If an icon is flashing, it means the
function will be activated after the controller delays are finished.
• The “AUX HTRS/UP” button is used for activation or
deactivation of the auxiliary anti-condensate heaters or for
increasing values.
• The “SET/MUTE” button is used to lock in a new value or
to silence the alarm beeper.
• The “POWER/DOWN” button is used to turn the unit on/off
or for decreasing values.
• Press the “UP” and “DOWN” buttons simultaneously for 3
seconds to put into manual defrost.
NOTE: The electronic control has 2 or 3 probes. There is
the regulation probe in the return air stream, there is an
evaporator probe located in the evaporator coil, and if the
unit has fascia heaters, there will be an ambient probe.
INITIAL SEQUENCE OF OPERATION
1. Cabinet is plugged in.
2. The control will cycle the compressor on and off determined
by the SET-POINT and DIFFERENTIAL.
3. The control may be preprogrammed to initiate a defrost by
time interval.
HOW TO CALIBRATE THE ELECTRONIC CONTROL
The controller temperature display can be calibrated if required.
Before attempting to calibrate the temperature display, check the
display by placing a pre-calibrated temperature sensing device in
the center of the refrigerated compartment and keep the doors
closed for at least 15 minutes. The temperature display should
read the same temperature as the sensing device, within +/-2°F.
If not, follow these instructions to calibrate.
1. Press and HOLD the “SET” button until “PS” appears flash-
ing in the display. Release the “SET” button.
2. Press the “UP” button until “/C1” appears in the display.
Release the “UP” button.
3. Press and release the “SET” button. The current value of the
offset will appear in the display.
4. Press the “UP” button to increase or the “DOWN” button to
decrease the offset value.
5. Press and HOLD the “SET” button for 5 seconds to confirm
and save the new value. When complete, the current tem-
perature will be displayed. RELEASE the “SET” button.
EXAMPLE: If a sensing device in the cabinet reads 38°F and the
control display shows 41°F, follow steps above and decrease the
current offset by 3°F. If the current offset was 0, change to -3.
HOW TO CHANGE THE SET-POINT
Refrigerators are factory set to maintain an average temperature
of 38°F. Freezers are factory set to maintain an average tempera-
ture of 0°F. To change set-point:
1. Press and HOLD the “SET” button until the current set-point
begins flashing. Release the “SET” button.
2. Press the “UP” or “DOWN” button to adjust to the new set-
point value.
3. Press and release the “SET” button to lock in the new set-
point. The control will now resume normal operation with
the new set-point.
AUX HTRS
(UP)
SET
(MUTE)
POWER
(DOWN)
DEFROST
2 BUTTONS