Aiphone LEF-3L - Troubleshooting Common Issues; Call and Communication Failures; System Performance and Noise Issues; Door Release and Signaling Problems

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7
TROUBLESHOOTING
ENTRY # PROBLEM POSSIBLE CAUSE SOLUTION
１
Door station does not call
in (no call tone or LED
light).
Missing jumpers Are there 2- or 3-conductors run to the door station? If 2 wires, jumper must
remain attached between
E
and
—
at both the door station and the master
station. Replace jumper. In a multi-master system, the
E
/
—
jumper
should be removed and 3 wires should be connected.
2
Door station does not call
in (no call tone or LED
light) -- 3-wire connection.
Missing connection of
—
terminal.
If communication works, check connection between
—
terminal of door
station and master. Test call-in at master station by touching a jumper wire
between # and
—
terminal of master. If this rings the tone and lights the
light, the
—
wire from the door station is not connected properly.
3
Door station does not call
in (no call tone or LED
light) -- 3-wire connection.
Miswiring of
1
and
E
terminals.
Check that the
1
and
E
wire are not reversed. If they are, communication
will work but call-in will not.
4
No communication to
door station.
Miswiring of
E
terminal. Communication is between the
1
and
E
terminal of the door station to a #
and
E
terminal of the master station. If call-in works, check the
E
wire for
continuity. Check the
1
and
E
wires at the sub to ensure that they are not
reversed.
5
No master-to-master
communication.
C
terminals mis-wired
between masters.
Communication between masters is carried on the # wire of the calling
master to the
C
terminal of the receiving master. Verify that the
C
terminal
of the master that is being called is actually wired to the #terminal that is
being selected on the calling master.
6
LEF master has no
communication or tone, but
LED lights work.
Wrong power supply is
being used.
The LED lights will operate with a power source from 6VDC - 24VDC. The
amplifier in the LEF unit will only work when the system is supplied 12VDC.
Proper power supply is the PS-1225/S/UL, or PS-1215 DIN.
7
Feedback when the volume
control is turned above
halfway.
E
/
—
jumpers attached
in a multi-master system.
Remove
E
/
—
jumpers on masters and door stations in the system,
provided there are 3 wires to the sub(s). If the sub only has 2 wires in a
multi-master system, the jumper must remain in place for the door call-in to
work. In this case, the side effect is the feedback problem when the audio
volume is turned up. The only alternative is to run the proper wire to the
door station(s) and remove all of the jumpers.
8
New installation has AC
buzz, noise, or hum in
system.
Too close to AC and/or
incorrect wire was used.
If the units are too close to an AC source such as AC wiring or dimmer
switches, move the intercom at least one stud space away from the AC
source. Other precautions include using shielded cable. If shielded wire was
used and there is still AC noise, tie all the shields together and ground to
an earth ground or negative on the power supply. If more than one jacketed
cable was used between masters, make sure the # terminals,
C
terminal,
and the
E
terminals are all in the same jacketed cable. If multiple cables
were used, include an
E
wire in each cable that carries a station number
wire in it.
9
Door release does not work.
Miswire or lack of RY-PA
relays.
Check the
WHITE
wire coming out of the PC board for voltage. When
pushing the door release (
) button, 12VDC is present across
WHITE
and
—
, which activates the relay. Ensure the
BLACK
wires of the RY-PA
are connected to
WHITE
and either the
BROWN
,
RED
, or
ORANGE
wire for selective door release (which provides selective ground when the
corresponding channel is selected).
10
No call tone between
masters.
No Privacy feature on
LEF-3L.
Features not available
The LEF-3L unit does not have the PRIVACY feature or the ability to send
a call tone to another master station (as with the standard LEF-3). This
function is removed to allow the switch to be used for door release instead
of privacy.
11
Can't release the door from
the 2nd (additional masters)
Wiring not connected
properly.
If door release works from the first master station but not another station(s),
verify that selective door release wires are connected between master
stations (
WHITE
,
BROWN
,
RED
,
ORANGE
). RY-PA are only required
at one master.
12
External Signaling device
doesn't activate
RY-AC mis-wired
Make sure the WHITE wire of the RY-AC is connected to the # terminal
activating the relay, and
RED
and
BLACK
are connected to
+
and
—
,
respectively.