Danfoss AK2-SC 255, Reference Manual, Page: 33 / 206

32 AK2-SC 255 Reference Manual RS.8D.M1.22
Fan starting temp (-58.0 to 99.9) The temperature at which fans will be
started after fan delay, if fans are not started on time.
Monitor door position (List box: Yes, No) Whether or not an alalog sensor
input is created to monitor the position of the door. This
sensor reads in percent and will be seen on the status
screen for the circuit. An alarm can be based on it.
Configuring Defrost Defrost configuration begins on the next setup page for an evaporator circuit.
The fields are as follows:
No of defrosts per day (0 to 12) The number of defrosts each day.
Defrost duration (1 to 180) The number of minutes after which defrost
will terminate, if termination has not occurred on a
setting configured in the previous screen. Often called
“fail-safe” defrost time.
Defrost start time (time of day; one field for each of the number of
defrosts configured in the first line of the screen) The
time each defrost will initiate.
Allow defrost skip (List box: Yes, No) When Yes is selected, The SC 255
has the ability to determine, based on analysis of
current and accumulated data, to determine if each
defrost is needed. When a defrost is not needed, it is
not initiated, thus reducing energy cost and enhancing
product life.
Min time between defrost (1 to 255) Minimum number of hours between de-
frosts.
Override on dewpoint (List box: Yes, No) Whether or not to override defrost
skipping on a dewpoint setting (next question).
Don’t skip when DP above (1.0 to 3276.0) Defrost will occur regardless of
skipping calculations whenever dewpoint is above this
setting.