5
TROUBLESHOOTING
Release Sensitivity
h
Set to
Low
if multiple detections or dropouts occur frequently at
Normal
.
h
Set to
High
or
Extra High
to compensate for improperly positioned loops where run-ons occur.
h
Set as low as practical. Check for run-ons or dropouts and set for best operation.
RESET PROCEDURE
If the detector is stuck indicating a vehicle present continuously or is otherwise unresponsive, follow the reset steps below:
With
no vehicle
present over the vehicle detector loop:
h
Press and hold the
Reset
switch in the base station or timer for 1 second and then release. The VDB103/VDB103R display
will go blank for a few seconds and then should show “
b
” for a second or two.
h
Reset is complete when the VDB103/VDB103R display shows a code other than “
b
” or “
F
”.
DETECTOR FUNCTION
To verify proper detector board function, disconnect one of the wires to the detector loop and verify that the board display changes
to “
d
”. Then reconnect the wire and the display should change back to one of the normal codes. If the display was originally
showing “
d
”, short the two loop terminals and watch for the display to change to “
C
”.
