TROUBLESHOOTING
These are a few troubleshooting suggestions to help assist with any problems you may experience. If the problem
continues or is not answered here, please call Security Door Controls (SDC) technical support at (800) 413-8783.
You can also visit SDC anytime at www.sdcsecurity.com.
I Changed or Deleted a code, but the old code still unlocks the door
Remember there are a total of 6 User Codes for the 931 EntryCheck
™
. Make sure you changed the desired code. If
you changed the Master Code, the other User Codes will still work. If in doubt, it is recommended you reprogram the
master code and delete all 5 user codes. Then program any new user codes. (See System Programming Pg 12)
The Keypad beeps normally but the door does not unlock
For a new installation:
1. Check the specifications of your power supply and locking device. (See Input Requirements pg 4.)
Note: If you are connecting 12/24VDC, make the connections to "DC IN/OUT" instead of
"12-24VAC/DC IN" (see Circuit Board Layout - pg 13). Make sure polarity is correct.
2. Test the wiring hookup to the primary locking device (the device connected to User Code 1, 2 Unlock).
On the control module circuit board, locate and momentarily short the screws for "REMOTE" (See pg 13). This
will activate the output (same as if you enter a valid programmed code at the Keypad).
If this test does not activate the lock, check the lock wiring (see Typical Wiring Diagrams pg 14). If your wiring is
correct, check the 931 relay settings (see Setting Relay Options pgs 8-9). If this test does activate the output (you
should hear the relay click and the locking device should unlock), reprogram the Master Code and User Codes.
Review Overview of System Code Programming (pg 12). Remember that all six codes have to be different from
each. It is also important not to let more than 5 seconds elapse between button presses or the system will reset and
you will have to start over.
For an existing Installation:
There are typically two reasons for code loss: static or inductive kickback. There is no way to determine if the system
has been affected by either of these, however, you can reprogram the system codes as described in User Code
Programming. It is very important the system is properly grounded and the MOV has been installed, otherwise static
and code loss may be an ongoing problem.
The Door opens with the first press on the Keypad
If the unit has just been installed, check the CCTV jumper (see Setting Relay Options pg 8-9). If you do not have a
CCTV connected to the 931 EntryCheck
™
, make sure the CCTV jumper is NOT installed across the 1
st
and 2
nd
pins
or the 2
nd
and 3
rd
pins.
Keypad is completely dead
Interrupted Power - First check your power supply to see that power has not been cut off. Using a voltmeter, check
the incoming voltage on terminal strip “B” (12-24V AC/DC IN). If the voltage reads low, the electric locking device
may be drawing too much current. To test, remove the wires to the device and recheck the voltage. If the voltage
now reads normal, check the current draw of the locking device and make sure it falls within the system
specifications (see Input Requirements pg 4).
Blown Fuse - Check the fuse on the circuit board. The purpose is to protect the power supply and circuitry. If your
locking device is drawing too much current or there is a short, the fuse will blow. Replace with 2 Amp Slo Blo only. A
spare fuse is provided in the spare parts kit. Although the fuse may appear intact, it is best to check with a voltmeter.
P:\INSTALLATION INST\Access Control\INST-931.vsd 0505 Page 12
Keypad beeps all by itself
Constant Beeping - If the beep is consistently every 5 seconds, put a
.
1
uf
16v (or higher) ceramic capacitor across
wires 3 & 10 (black, violet) on terminal strip “A”.
Random Beeping - Check for bad circuit ground going to the keypad. Is the black wire from the wiring cable
securely fastened to screw #3 on Terminal A? Check for bent pins on the back of the keypad. Also check EARTH
ground.
