Bulletin 100-50-9.1 – Page 9
2.4 S3C DISPLAY NAVIGATION
1. The ▲▼ buttons can be used to scroll up and down
through menus.
2. The SET button is similar to an “enter” button and
can be used to enter a particular submenu or commit
a selected parameter when it is changed. Note: A
password is required for changing setpoints.
3. The ESC button can be used to exit a menu or
submenu. Note: A subsequent press of the ESC
button will move back to the previous parameter.
4. The S3C Display Module (DM) will revert to the default
display after 3 minutes of button inactivity and changes
will not be saved.
2.5 S3C DISPLAY MODULE OPERATING
DISPLAYS
Normal Cooling (Default Display)
FIGURE 1 - Low Temperature Applications
(Note Blue Quick Views)
FIGURE 2 - Medium Temperature Applications
(Note Green Quick Views)
During the normal refrigeration cycle, the current tempera-
ture as measured by the Discharge Air sensor is prominently
displayed along with the units of measure. The and
icons are illuminated indicating refrigeration mode and
evaporator fan on status. Note: the icon is illuminated
when the system is in refrigeration mode and refrig-
erant is feeding the evaporator coil (i.e. all valves are
open allowing flow). A quick glance at this icon shows
that the EEV, EEPR (if used) and liquid line solenoid valve (if
used) are either open or closed during refrigeration mode.
The Quick View indicators are illuminated BLUE for low
temperature operation or GREEN for medium temperature
operation indicating the current temperature is within the
user set temperature alarm limits.
During the defrost cycle when the termination temperature
is satisfied or the fail-safe time has elapsed, the defrost
mechanism will deactivate. After any user set drip cycle time
has elapsed, the S3C will resume refrigeration changing the
Quick View indicators to BLUE or GREEN and illuminating
the icon. The icon remains off until the fans restart in
accordance with the fan delay time or temperature setting.
The display will return to the default temperature when the
control temperature is within 5°F of setpoint or 30 minutes
has elapsed.
Defrost Pumpdown Active
Defrost Terminated/Pulldown Active
When a defrost cycle is entered, the system will first go
into pumpdown mode to remove any refrigerant from the
evaporator. During this mode, the temperature display is
replaced with def and the Quick View indicators will turn
off. The fans will continue to run and the icon will be
illuminated until the end of the pumpdown time.
When a defrost cycle is active, the Quick View indicators
change to PURPLE. e icon illuminates when the
defrost mechanism is active. e S3C Display Module (DM)
will continue to display def throughout the entire defrost
cycle.
Defrost Active
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