What to do if external signaling device doesn't activate on Aiphone Intercom?
If the external signaling device on your Aiphone Intercom System doesn't activate, the RY-AC might be mis-wired. Ensure the WHITE wire of the RY-AC is connected to the # terminal activating the relay, and RED and BLACK are connected to + and —, respectively.
What to do if Aiphone LEF-3L Intercom System has no communication to door station?
If there is no communication to the door station on your Aiphone intercom system, the issue might be with the wiring of the E terminal. Communication occurs between the 1 and E terminals of the door station and the # and E terminals of the master station. If the call-in function works, check the E wire for continuity. Also, check the 1 and E wires at the sub to ensure they are not reversed.
Why does my Aiphone Intercom System door station not call in?
If the door station on your Aiphone intercom system does not call in (no call tone or LED light), it could be due to missing jumpers. If there are only 2 wires running to the door station, a jumper must remain attached between E and — at both the door station and the master station. Replace the jumper if it's missing. In a multi-master system, the E / — jumper should be removed, and 3 wires should be connected.
What to do if Aiphone LEF-3L door station doesn't call in with 3-wire connection?
If the Aiphone intercom system door station doesn't call in (no call tone or LED light) with a 3-wire connection, and communication works, check the connection between the — terminal of the door station and the master station. Test the call-in at the master station by touching a jumper wire between the # and — terminals of the master. If this rings the tone and lights the light, the — wire from the door station is not connected properly.
Why is there no call tone between masters and no privacy feature on my Aiphone LEF-3L Intercom System?
The Aiphone LEF-3L unit lacks the PRIVACY feature and the ability to send a call tone to another master station, unlike the standard LEF-3. This function is intentionally removed to allow the switch to be used for door release instead of privacy.
Why can't I release the door from the 2nd master on my Aiphone LEF-3L?
If you're unable to release the door from the 2nd (additional) masters on your Aiphone Intercom System, the wiring may not be connected properly. If door release works from the first master but not others, verify that selective door release wires are connected between masters (WHT, BRN, RED, ORG). Note that RY-PA's are only needed at one master.
How to fix AC buzz or noise in a new Aiphone Intercom System?
If your new Aiphone Intercom System installation has AC buzz, noise, or hum, it might be too close to an AC source or use incorrect wiring. Try moving the intercom away from AC wiring or dimmer switches. Using shielded cable may also help. If noise persists with shielded wire, tie all shields together and ground them to an earth ground or the power supply's negative terminal. When using multiple jacketed cables between master stations, ensure the #, C, and E terminals are in the same jacketed cable, including an E wire in each cable carrying a station number wire.
Why is there no communication to the door station on my Aiphone Intercom System?
If there is no communication to the door station on your Aiphone Intercom System, the E terminal might be mis-wired. Communication relies on the connection between the 1 and E terminals of the door station to the # and E terminals of the master station. If call-in works, check the E wire for continuity. At the sub station, verify that the 1 and E wires are not reversed.
How to resolve feedback in Aiphone LEF-3L when volume is high?
Feedback in your Aiphone intercom system when the volume control is turned above halfway can be due to E / — jumpers being attached in a multi-master system. Remove these jumpers on the masters and door stations, 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. Running the proper wire to the door station(s) and removing all of the jumpers is the only real alternative.
What to do if Aiphone LEF-3L Intercom System door station does not call in with a 3-wire connection?
If the door station of your Aiphone Intercom System does not call in, and you have a 3-wire connection, the issue might be a missing connection of the - terminal. If communication works, verify the connection between the - terminal of the door station and the master station. Test the call-in at the master station by touching a jumper wire between the # and - terminals of the master. If this rings the tone and lights the light, the - wire from the door station is not connected properly.
Details actions to avoid, such as dismantling, and lists critical warnings for safe use.
Highlights cautions related to installation, wiring, and environmental factors to prevent damage or injury.
Provides general guidance on safe operation, placement, and use of the intercom system.
Summarizes key features like door release, CCTV integration, and system expandability.
Explains the 3-position switch for adjusting the call tone volume.
Describes the function of the selector switch for call tone behavior when the unit is occupied.
Presents a system outline diagram and lists individual components for the LEF-3L system.
Defines terminal functions and outlines color-coded wires used in the system.
Offers charts for wiring distance limitations and recommended wire gauges.
Lists precautions for safe and effective installation and wiring practices.
Explains recommended wiring methods and cable specifications for the system.
Details back wiring, surface wiring, and desk-top mounting procedures.
Specifies locations to avoid for optimal intercom performance and safety.
Provides step-by-step instructions for accessing the unit's internal connections.
Shows wiring diagrams for connecting sub or door stations to master stations.
Details wiring configurations for internal communication between master stations.
Presents wiring for master-to-sub communication without master-to-master linkage.
Shows diagrams for connecting door release relays (RY-PA) for various stations.
Describes the procedure for operating the door release function with relays.
Illustrates wiring for external signals (bell/horn) and CCTV using relays.
Explains how relays activate for external signaling and CCTV call-up.
Illustrates wiring for a system with one master and three door stations.
Shows a complex system setup with multiple masters, subs, and signaling devices.
Details the wiring for a system featuring three master stations and one sub station.
Shows the 'Parallel Method' wiring for master-to-sub communication.
Offers advice on installing surge arrestors for power supplies and communication lines.
Details procedures for calling stations and receiving calls from sub or master units.
Describes how to answer doors and operate the door release mechanism.
Addresses issues with stations not calling, loss of communication, or master-to-master problems.
Solves problems related to feedback, electrical noise, and feature availability.
Provides solutions for malfunctioning door release and external signaling devices.
Details power source, consumption, communication output, dimensions, and wiring specs.
Covers system power supply requirements and connection limitations.
Outlines the terms, conditions, and limitations of the Aiphone product warranty.
Power| power source | 12V DC |
|---|---|
| communication output (receive) | 800mW @ 20 ohms |
| communication output (transmit) | 500mW @ 20 ohms |
Wiring| wiring distance with 22AWG | 650' |
|---|---|
| wiring distance with 18AWG | 1, 600' |
| dimensions (HxWxD) | 7-1/16" x 5-5/8" x 2-3/16" |
Relay Specifications| RY-PA contact rating (AC) | 1A, 110V |
|---|---|
| RY-PA contact rating (DC) | 1A, 24V |
| use PS-1225UL | yes |
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