Trane R Series Installation Operation & Maintenance page 73

73
Controls Interface
The refrigerant liquid level is displayed relative to the optimum liquid level control
point inside the evaporator shell. The liquid level sensors range is generally
between -1.0 to +1.1 inches. If the display reads +1.0 of -1.0 inches, the liquid level
may be higher or lower than this, respectively.
Compressor Screen
The compressor screen displays information for the one, two, three, or four
compressors in the format shown. The top line of radio buttons allows you to select
the compressor of interest.
The next three lines show the compressor operating mode. The compressor radio
buttons and the compressor operating mode lines don't change as you scroll down
in the menu.
The top screen has no upward scroll
keys. The single arrow down scrolls
the screen one line at a time. As soon
as the display is one line away from the
top, the upward pointing arrow appears.
The last screen has a single arrow to
scroll upward one line at a time. When
in the last position, the single down
arrow disappears.
Each compressor has its own screen
depending on which radio key is
pressed. When toggling
compressor screens, say to compare
starts and run time, the same lines can
be seen without additional key strokes.
For example, toggling from the bottom
of the compressor 1A menu accesses
the top of the compressor 2A menu.
Compressor Mode
The compressor mode indicates the
status of each compressor independent
of unit mode.
See Table for a complete listing of
compressor modes.
Line Currents
Line currents are displayed in amps to
the nearest tenth from 0.0 to 999.9.
%RLA
The line% running load amps will be
between
displayed to the nearest tenth from 0.0
to 999.9.
Line-Line Voltages
The single line-to-line voltage displayed
is A-B in unit volts. Note: Only
Compressor 1A has a voltage input and
display.
RTAC-SVX002A-EN