SECTION 4 WSPC USER INTERFACE MANUAL
25
the fault occurred. Column three shows the month
and day on which the fault occurred. The remaining
columns display the time of day that the fault
occurred in hour:minutes:seconds.
The lower portion reports communication errors
between the WS controller and its User Interface,
and between the WS controller and other controllers
in a group of sequenced compressors. The upper
box, labeled "Up/Down Count" shows recent
communication errors. The lower box shows the
total number of communication errors.
SENSOR LOG BUTTON
It is possible for the user to view the readings of up to
eleven sensors during the last ten minutes leading up
to a fault. While at the “Service” display screen, click
on the “Sensor Log” button (see Figure 4-5) to bring
up the “Sensor Log.” This log, shown in Figure 4-6,
displays each sensor reading in ten one-minute
decrements down to one minute before the last fault
occurred.
In the example shown, the log shows sensor
readings for Temperature 1, Sump Pressure, Line
Pressure, and Controller Voltage. The final minute of
sensor readings leading up to a fault is displayed in
12 five-second decrements. The last sensor reading
is at zero (0) seconds recorded shortly before the
fault occurrence. Using this data a user or service
technician can observe the progression of a fault as
an aid in diagnosing the problem. Refer to the WS
Controller User Instruction Manual for actions to be
taken when a warning or fault condition occurs.
Figure 4-4: Service Display
Figure 4-5: Sensor Log Button
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