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SECTION F: Troubleshooting
50
UDB Fault History
To view the fault codes in the UDB history file:
1. Press and hold the switch labeled “SW1” for 5
seconds to access the fault history. LED 17 will
begin to flash when the history has been accessed.
See Fig. 38 on page 37.
2. Press the switch labeled “SW2” to scroll through
the recorded faults in history.
3. When a fault is being displayed, the corresponding
LED will light AND LED 17 will flash at a rate
that corresponds to the fault number.
4. The faults are recorded and displayed on a last in,
first out basis. The last fault recorded will be the
first fault displayed. There is no time or date stamp
associated with these faults.
5. Continue to push “SW2” to view subsequent faults.
6. When the history of faults has been exhausted,
pushing “SW2” again will roll the fault history
over and it will start again.
7. To exit the fault history, press and hold “SW1” for
5 seconds, or wait for 4 minutes and the board will
automatically exit the history mode (fault LEDs
will go out).
To clear the fault history, press and hold both “SW1”
and “SW2” for 5 seconds.
NOTE: Once the history has been cleared, it cannot be
recovered.