Symptom
Cause
Solution
Procedure
No red LED on
power up
No voltage at circuit board
input terminals.
Verify a minimum of 10.5VDC
(12VDC) across "+" and " - "
voltage input terminals.
• If the minimum voltage is not
present, check the output at the power
supply for voltage.
• If correct voltage is present at power
supply, check wiring between power
supply and keypad for an open circuit.
• If voltage is not present at power
supply output, check the fuses.
• If fuses are blown, look for a short
between the power supply and 7311
keypad.
• If fuses are not blown, measure
120VAC input to the power supply.
• If no 120VAC, check circuit breaker.
• If 120VAC is present, return power
supply to supplier for repair.
Input voltage polarity is reversed
at input terminals.
Verify positive lead from DC power
supply goes to "+" input and ground
to "-" input.
• If reversed, then correct. This should
not cause damage to the circuit board.
Voltage jumper (J2) not set
properly.
Verify jumper is on both pins to
operate on 12VDC voltage.
• If not properly set, correct.
Red LED does not
change to green
when a valid code
is entered.
Code was not entered correctly.
Re-enter proper code correctly.
• Enter the 2 to 6 digit number (look
for yellow flash with each key pressed).
• Follow number entered immediately
by .
Code is not valid.
Use master code to enter
programming mode and add user
code (command 50).
Master code was erased when
erasing program memory.
Briefly remove jumper J1 to enter
programming mode, enter command
50 to redefine master code.
Red LED turns to
green, but lock
does not release.
Voltage jumper (J2) not set
properly.
Verify jumper is on both pins to
operate on 12VDC voltage.
• If not properly set, correct.
Incorrect wiring between keypad
and lock.
If lock is fail-secure, remove the wires
tied to the "C" and "NO" terminals
and tie together. Lock should release.
If not, check wiring between keypad
and lock for opens. If the lock is fail-
safe, remove wire from "NC" output
terminal. Lock should release. If lock
releases as it should, and keypad is
getting correct input voltage, return
keypad for repair.
Master code does
not access pro-
gramming mode.
Did not use current master code.
Press 99#, and enter current code.
Master code was reset by erasing
memory (command 46).
Remove and replace jumper "J1," use
command 50 to redefine master code.
Request-to-exit
switch does not ac-
tivate unlock relay.
Door position switch is not closed.
Tie the white and orange/white wires
securely together.
Green LED on
solid.
Toggle code has been entered.
Enter toggle code again to
de-energize relay.
Yellow LED on
solid.
Made a programming error when
in programming mode.
Press
• to get back to a slow yellow
flashing LED.
Summary of Contents for VON DUPRIN 7311
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