- Networks
- Video intercoms
No Signal
Fermax No signal video intercom: DuoxMe connection lost
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Medium
Quick answer
The 'No signal' (or 'No connection') warning in the DuoxMe app means your Fermax terminal has lost its internet connection. Check local monitor operation first, verify at least 3 green WiFi bars on screen, and re-pair a WiFi monitor.
Safety first
Stop and check this first
- Do not judge wireless reception from the monitor's front WiFi LED: Fermax notes that this LED only shows whether the monitor is connected, whereas signal strength is shown by the on-screen icon.
Safe checks you can perform
- Test video, audio and door release on the physical monitor
- Check the on-screen WiFi signal bars on your monitor
- Re-pair a WiFi monitor or report a Connect 4G panel outage
Leave these tasks to a qualified professional
- Do not attempt this professional task: Inspect local intercom operation when monitor functions fail
- Do not attempt this professional task: Verify three-bar WiFi coverage and restore the DuoxMe link
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Inspect local intercom operation when monitor functions fail
What they doIf local video, audio, door opening or the 90-second call test fails on the indoor unit, the installer checks the building intercom line and indoor terminal.
They must show youcamera auto-on, two-way audio and door release working properly on the physical monitor.
In writinglocal VEO or IRIS functional checks performed, installation fault identified and corrective action taken.
Verify three-bar WiFi coverage and restore the DuoxMe link
What they doOnce local monitor operation is confirmed, the technician verifies at least 3 green WiFi bars on screen, assists with deleting and re-adding the home in DuoxMe, or escalates a Connect 4G panel outage.
They must show youthe on-screen WiFi signal icon and the reconnected home status inside the DuoxMe application.
In writingterminal type (WiFi or Connect 4G), recorded WiFi signal bars and outcome after re-pairing or escalation.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Test video, audio and door release on the physical monitor
- Who:
- you, at your indoor VEO or IRIS monitor before troubleshooting the mobile app.
- How:
- press the video camera button on VEO (or wake the screen and tap the camcorder button on IRIS) to check video, press the key button to test door opening, and have someone ring from outside to verify a 90-second call.
- Result that matters:
- confirm that the physical video door phone installation works locally before focusing on DuoxMe.
- If video, audio, door opening and call reception work on the monitor:
- check WiFi signal bars and app pairing next.
- If any local monitor function fails:
- contact your building installer to inspect the intercom installation.
- Evidence to keep:
- outcomes of the local camera self-start, door release and 90-second incoming call test.
Evidence: My video door phone doesn't work. How can I check that it is working properly?
Check the on-screen WiFi signal bars on your monitor
- Who:
- you, viewing the display of your VEO or IRIS WiFi monitor.
- How:
- on VEO press MENU and inspect the bottom-right corner (on IRIS turn on the screen and look at the top-right corner); verify at least 3 green signal bars rather than relying on the front WiFi LED.
- Result that matters:
- see whether weak wireless reception explains the lost connection in DuoxMe.
- If at least 3 green bars are visible:
- proceed to delete and re-add the home in DuoxMe.
- If the WiFi signal is very weak:
- move the router closer or add a repeater or extender before re-pairing.
- Evidence to keep:
- the number of WiFi signal bars shown on the monitor screen and obstacles between router and monitor.
Evidence: How can I check or improve the WiFi signal received by my monitor?
Re-pair a WiFi monitor or report a Connect 4G panel outage
- Who:
- you, in the DuoxMe app according to whether your terminal is a WiFi or non-WiFi Connect 4G model.
- How:
- for a WiFi monitor showing 'No connection', open Settings > Home tab > Delete home and then tap Add video door phone on the main screen; for a non-WiFi Connect 4G model, use Settings > General tab > Contact Fermax.
- Result that matters:
- reconnect the WiFi monitor to your router or alert Fermax support to a communal Connect 4G outage.
- If re-pairing clears the 'No signal' warning:
- verify remote camera viewing in DuoxMe.
- If 'No signal' remains after re-pairing or on a Connect 4G system:
- await Fermax support or installer follow-up.
- Evidence to keep:
- the home status in DuoxMe after re-pairing or details of the support request submitted.
Evidence: What does the No signal warning in the DuoxMe app mean?
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Networks
- Brand
- Fermax
- Product type
- Video intercoms
Known code variants
- Aviso No hay señal en DuoxMe
- Cable HDMI desconectado
- Chromecast black screen
- Chromecast error HDCP
- Chromecast error HDMI
- Chromecast HDCP error
- Chromecast HDMI error
- Chromecast no signal
- Chromecast pantalla negra
- Chromecast sin señal
- Fermax monitor disconnected
- Google TV Streamer no signal
- Google TV Streamer sin señal
- Hisense no signal
- Hisense no signal HDMI
- Hisense señal débil
- Hisense sin señal
- Hisense TV no hay señal
- Hisense TV no signal
- Hisense TV no signal antenna
- Hisense TV sin señal TDT
- Hisense weak signal
- LG TV no signal
- mensaje no hay señal LG
- Mi TV no signal
- Mi TV sin señal
- Monitor Fermax sin conexión
- No connection
- No hay señal
- No hay señal WiFi
- No Signal
- No signal input
- No signal or weak signal
- No signal warning in DuoxMe app
- Pantalla muestra sin señal
- Samsung TV no signal
- Screen prompts no signal
- Señal débil
- Sin entrada de señal
- Sin señal
- TV has no signal
- Weak Signal
- Xiaomi TV no signal
- Xiaomi TV sin señal
What it means
Fermax's official page 'What does the No signal warning in the DuoxMe app mean?' covers WiFi monitors (VEO and IRIS ranges) as well as non-WiFi terminals linked through a communal Connect 4G outdoor panel. It explains that the terminal has lost internet access, preventing app communication. Fermax's WiFi coverage and intercom check guides add local hardware tests and signal-bar checks. Other models may differ; this warning alone never proves a component is faulty.
Warnings and stop conditions
- Lowsource verified
Do not judge wireless reception from the monitor's front WiFi LED: Fermax notes that this LED only shows whether the monitor is connected, whereas signal strength is shown by the on-screen icon.
Evidence: How can I check or improve the WiFi signal received by my monitor?
Symptoms and causes
Probable causes · in order
- Indoor WiFi monitor disconnected from the home routerCommon
On a WiFi model, seeing 'No connection' inside the home view means the monitor lost its WiFi link and must be removed and paired again in DuoxMe.
Evidence: What does the No signal warning in the DuoxMe app mean?
- WiFi signal strength below three green bars at the monitorPossible
Fermax recommends at least 3 green signal bars on the monitor's on-screen WiFi icon (the front WiFi LED only shows connection state, not strength) for reliable app operation.
Evidence: How can I check or improve the WiFi signal received by my monitor?
- Communal Connect 4G outdoor panel internet lossPossible
For non-WiFi indoor terminals that rely on a communal Connect 4G outdoor panel, the warning appears whenever that outdoor panel loses its internet connection.
Evidence: What does the No signal warning in the DuoxMe app mean?
Virtual technician
Does No Signal still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
¿Qué significa el aviso No hay señal en la app DuoxMe?
Fermax · 2026 · official_doc
- 2
What does the No signal warning in the DuoxMe app mean?
Fermax · 2026 · official_doc
- 3
¿Cómo puedo ver o mejorar la cobertura WiFi que recibe mi monitor?
Fermax · 2026 · official_doc
- 4
How can I check or improve the WiFi signal received by my monitor?
Fermax · 2026 · official_doc
- 5
Mi videoportero no funciona. ¿Cómo puedo comprobar el funcionamiento del videoportero?
Fermax · 2026 · official_doc
- 6
My video door phone doesn't work. How can I check that it is working properly?
Fermax · 2026 · official_doc
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