Aiphone LEF-3L TROUBLESHOOTING GUIDE (Cont.)

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TROUBLESHOOTING GUIDE (Cont.)

ENTRY # PROBLEM POSSIBLE CAUSE SOLUTION

No master-to-master

communication.

terminals mis-wired

between masters.

Communication between masters is carried on the # wire of the calling

master to the

terminal of the receiving master. Verify that the

terminal

of the master that is being called is actually wired to the #terminal that is

being selected on the calling master.

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

ampliﬁ er in the LEF unit will only work when the system is supplied 12VDC.

Proper power supply is the PS-1225/UL/S, or PS-1215 DIN.

Feedback when the volume

control is turned up over

halfway.

—

jumpers attached

in a multi-master system.

Remove

—

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.

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,

terminal,

and the

terminals are all in the same jacketed cable. If multiple cables

were used, include an

wire in each cable that carries a station number

wire in it.

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

depressing the Door release ( ) button, 12VDC is present across

WHITE

and

—

, which activates the relay. Ensure that 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).

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.

Can't release the door from

the 2nd (additional masters) Wiring not connected

properly.

If door release works from the ﬁ rst master but not another(s), verify that

selective door release wires are connected between masters. (

WHITE

BROWN

RED

ORANGE

). RY-PA's are only required at one master.

External Signaling device

doesn't activate RY-AC mis-wired

Make sure that the WHITE wire of the RY-AC is connected to the #

terminal that is to be activating the relay, and that

RED

and

BLACK

are

connected to

+

and

—

, respectively.

WARRANTY

Aiphone warrants its products to be free from defects of material and workmanship under normal use and service for a period of one year after

delivery to the ultimate user and will repair free of charge or replace at no charge, should it become defective upon which examination shall

disclose to be defective and under warranty. Aiphone reserves unto itself the sole right to make the ﬁ nal decision whether there is a defect in

materials and/or workmanship; and whether or not the product is within the warranty.

This warranty shall not apply to any Aiphone product which has been subject to misuse, neglect, accident, or to use in violation of instructions

furnished, nor extended to units which have been repaired or altered outside of the factory. This warranty does not cover batteries or damage

caused by batteries used in connection with the product.

This warranty covers bench repairs only, and any repairs must be made at the shop or place designated in writing by Aiphone. Aiphone will not be

responsible for any costs incurred involving on site service calls.

AIPHONE CO., LTD., NAGOYA, JAPAN

AIPHONE CORPORATION, BELLEVUE, WA, USA

AIPHONE S.A.S., LISSES-EVRY, FRANCE

http://www.aiphone.com/

Printed in Japan (E)