14
a) Defrost Interval (F0)
This unit is preset at the factory to defrost once every 6 hours for general conditions.
However, if it is determined that this interval does not suit actual conditions, the interval
can be changed. To change the defrost interval, follow the steps below.
1) Press and hold both the
button and the
service button for 5 seconds. If "F0" is
not displayed, press the MANUAL DEFROST button until "F0" appears in the display
window.
2) Press the
service button to display the current setting (default: 6). Press the
up
or
down button to increase or decrease the number of hours between each defrost.
The interval can be from 1 to 12 hours in increments of 1 hour.
3) Press the
service button to save the setting.
4) Press the MANUAL DEFROST button to return to the menu screen. Press and hold
both the
button and the
service button for 5 seconds to exit the setting mode
and return to the temperature display.
Note:
• The defrost is a heated defrost, and therefore has a tendency to raise cabinet
temperature.
• Cabinet temperature is not displayed during defrost; "dF" is displayed in its place.
• The change in the defrost setting will take effect immediately. The next defrost will
take place after the newly set time interval has elapsed.
• Initiating a manual defrost will restart the defrost timer.
• The evaporator temperature must be below the defrost completion temperature for
any defrost (manual or auto) to be initiated.
b) Setpoint Temperature Differential (F2)
This value should only be changed after consulting with the factory. To change the
differential, follow the steps below.
1) Press and hold both the
button and the
service button for 5 seconds. "F0" should
appear in the display window. Press the MANUAL DEFROST button until "F2" appears
in the display window.
2) Press the
service button to display the c setting (default: 3.6°F (2.0°C) for
both refrigerators and freezers. The decimal between the digits is not displayed). Press
the
up or
down button to increase or decrease the + (plus) differential in .9°F
(.5°C) increments.
Note: The + value can be adjusted between 0.0 and 6.3°F in .9°F increments (0.0 to
3.5°C in .5°C increments).
3) Press the
service button to save the + setting. The - (minus) sign will flash and the
display will change to the - (minus) differential setting (default: -3.6°F (-2.0°C) for both
refrigerators and freezers). The decimal between the digits is not displayed).
Summary of Contents for RF28A
Page 6: ...6 1 RR28A RF28A Units mm in ...
