Has your BTicino Swing video door entry system stopped ringing and displaying video, even though the entrance panel appears to be working? Before buying another monitor, it is worth checking which functions have stopped responding and whether the issue affects only your home.
The cause may lie in the indoor monitor, its connection, or the elements that provide service to it. The fact that the external entrance panel has a light or responds to certain controls does not prove that the entire installation is working correctly.
First: identify which Swing you have
The name Swing is not sufficient to select a replacement or specify connections. Locate the reference in the documentation or on a label accessible without dismantling the unit. If you cannot see it, leave the identification to the installer.
This article provides initial guidance. The BUS checks refer to an installation identified as 2-wire; they should not be extrapolated to equipment whose system is unknown. Nor should the reference be inferred from the monitor's appearance.
1. Check whether the monitor is completely inactive
Without opening the unit, perform a test using its usual controls and note the result:
- Does it receive the call from the external entrance panel?
- Does the screen turn on when using auto-start, if available in your installation?
- Does the door release respond under the conditions in which you normally use it?
- Does any indicator that used to light up appear?
- Is there audio when answering a call?
The absence of a light, by itself, does not confirm a fault: the indicators and their functions depend on the version. The useful distinction is whether no function responds or whether the problem affects only the call or the image.
2. Distinguish a ringtone fault from a video fault
It does not ring, but other functions respond.
Check the volume setting and call exclusion, if your model includes these features, according to its operating instructions. The official information for the Swing range includes volume adjustment with silent mode. Do not change internal configurators in an attempt to restore the ringtone.
It rings or allows you to speak, but no image appears.
This is not the same symptom as a completely inactive monitor. Note whether the screen remains off or lights up without displaying an image, and report this to the professional. This information helps guide the inspection, but does not by itself identify the defective part.
It does not ring, display video, or respond to the controls.
In that case, you should check how the monitor receives service, its connection, and the unit itself. The monitor cannot be assumed to be faulty without checking these points first.
3. Check the extent of the issue in the building
If you live in a building, ask whether other residents have detected the same fault. If you have more than one terminal at home, note whether the other one works.
If several homes are affected, this points the investigation toward shared components, but does not confirm a specific cause. If only one home is affected, that does not prove the fault is inside the monitor: there may be an issue in its branch or connection.
Do not open communal junction boxes or disconnect other residents' equipment to carry out tests.
What the installer should check on a 2-wire Swing
Once the system has been identified, the professional must compare the diagram with the documentation for the installed reference. The review may include:
- The condition of the connections and the section leading to the home.
- The power supply and BUS operating conditions at the monitor point.
- The distributors or branches serving that terminal.
- The equipment configuration and line termination, where applicable to the diagram.
- The monitor itself, once the above elements have been checked.
A bad contact or a problem in the section serving the home are possibilities that must be checked, not diagnoses that can be asserted based on the symptoms alone.
Is it necessary to measure the BUS voltage?
Measurement may be part of professional diagnostics, but it must be carried out using the model's documentation and at the appropriate test points. No universal voltage is provided here, and users are not advised to measure the terminals.
In addition, detecting voltage alone does not prove that the power supply and communications are working correctly under all conditions. The result must be interpreted together with the rest of the tests.
Do not handle the power supply or work on the wiring without the necessary qualifications. Do not apply an external power source to test the monitor.
Do not move jumpers or configurators at random
A generic recommendation such as "check the JMP jumper" is not sufficient grounds for intervention. First, the equipment, the function of each jumper, and its correct position in the applicable diagram must be identified.
Do not remove jumpers or change addresses, modes, or terminations by copying instructions from another Swing. If the fault appeared after a replacement or construction work, tell the installer what was changed.
When is it advisable to replace the monitor?
Replacement should be considered when the diagnosis indicates that the equipment is responsible for the fault and the replacement's compatibility has been verified. It is not enough for another monitor to have a similar casing or to be advertised as "2-wire".
Before purchasing, the professional must verify the reference, the system, and the functions that must be retained, such as calling, video, and access release.
What information to prepare for technical support
Have the monitor’s reference, the specific symptoms, whether other terminals are affected, and when the fault began ready. It is also useful to mention whether there were building works, power cuts, or equipment changes before the incident, without assuming that they are the cause.
Legrand’s technical support service publishes the telephone number 91 991 55 00 and the email address sat.espana@legrandgroup.es, with opening hours Monday to Friday from 08:00 to 14:00 and from 15:00 to 19:00. You can consult the details on its official technical support page. Tegui Distel and the manufacturer’s official technical support are different services.
Frequently asked questions
If the entrance panel works, is the fault in my monitor?
Not necessarily. The entrance panel may show activity while there is a problem with the service to one home. The connection, the installation components, and the terminal must be checked before deciding.
Could silent mode explain why there is no video either?
This should not be assumed. Checking the volume helps rule out the doorbell being muted, but it does not replace diagnosing the lack of video.
Can I fix it by restarting the entire installation?
Do not disconnect the communal power supply yourself. An intervention may leave other residents without service and must be coordinated by the person responsible for maintenance.
Are all Swing monitors checked in the same way?
An internal procedure should not be applied without knowing the reference and the system. This guide does not include a wiring diagram or jumper positions for a specific model.
In summary: if your Swing neither rings nor displays video, note which functions respond, check only the user settings, and find out whether other homes are affected. Then ask the installer to check the connection, the service to the monitor, and its configuration before replacing it.
Reference information about the family’s features: Swing on Tegui’s official website. This family information does not identify the specific version of a BTicino device or establish replacement equivalents.