down the version number of your prox.pad plus
unit before calling IEI for help.
Table 5-1. 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 plus 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 2.2.3; for RF interference
problems, see section 2.2.4.
Chapter 5: Troubleshooting 5.1 Before Calling IEI
5-2 prox.pad plus Install/Program. Manual, PPP, D2
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