prox.pad Installation/Programming Manual
Table 13: Troubleshooting Chart
Problem Probable Cause Solution
Red LED turns green when access
accepted, but door does not open.
Various: power supply voltage
problems, locking device power
supply not set correctly.
1. Check power supply voltage. 2.
Monitor voltage at unit’s V+ and V-
terminals (on P1) with meter, enter a
valid code, and ensure that voltage
remains constant while locking
device attempts to unlock and
relock. If voltage varies 1/4 volt or
more during this test, this is a
problem you must correct; look for
the following: -verify that power
supply is rated sufficiently for all
equipment being powered -verify
that locking device, if on same
power supply, is set up for current
being drawn (example: if a lock
draws 300mA at 24VDC, same lock
may draw 600mA at 12VDC,
especially if the unit requires that
jumpers be placed in a different
configuration -place meter across
lock power wires at lock and ensure
the lock is receiving proper voltage
prox.pad unit experiences reduced
read range problems
Various: unit is mounted on a metal
surface, or other equipment
producing RF interference
For metal surface problems, see
section 1.13.3; for RF interference
problems, see section 1.13.4.
prox.pad unit not entering program
mode when 99 # Master code * is
pressed on the prox.pad keypad or
installer/programmer forgets the
“master code"
Various: master code has been
changed, is incorrect, or new code
not programmed correctly
1. With power to the prox.pad unit
turned ON, remove the main circuit
board from the unit as described in
section 1.16. 2. Locate the
“Program” button (SW1) underneath
the main circuit board and press it
for about 2 seconds. Take care if
you must pull the circuit board out of
the plastic housing. Handle the
board by its edges, otherwise, your
fingers can short the solder points.
Figure 1-7 illustrates the location of
this button. (When handling the
main printed circuit board, to guard
against possible static discharges,
touch a grounded object BEFORE
touching the prox.pad unit.) (The
yellow LED blinks slowly, indicating
that program mode is active.) 3. To
program a new master code, press:
1# new-code * repeat-code * The
code can be 1-6 digits, with
repeated numbers acceptable. 4. To
exit program mode, press * . 5.
Continue programming as described
in Chapter 2, 3, or 4.
Document # 6055676, Rev 2.2, D4b Page 81 of 86
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