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ALARMA-ROJO-INTERMITENTE

MásMóvil ALARMA-ROJO-INTERMITENTE on Livebox 6s ZTE: fibre disconnected or weak signal

Verified with sources2 sourcesReviewed Oct 3, 2026
Technician coming? See the 2 steps they must show you
Fibre Wi-Fi router with antennas
Solijon SolayevCC BY-SA 4.0Image source

Risk level

Low

Usually safe to check without specialist tools.

Urgency

Medium

Quick answer

If the Alarm indicator on the MásMóvil Livebox 6s (ZTE) blinks red fast, the fibre is disconnected or the signal is low. Look at the fibre cable without touching it, restart the router and run the Yo soy Más self-diagnosis.

Safety first

Stop and check this first

  • MásMóvil says a technician visit costs 72.60 EUR unless the fault is its responsibility: ask for the cause in writing.
  • Do not press Reset for 5 seconds to fix this state: MásMóvil says it restores factory settings. Do not unplug or clean the fibre either.

Safe checks you can perform

  • Read the indicators
  • Visual check of the fibre cable
  • Switch the router off and on
  • Self-diagnosis and report to MásMóvil

Leave these tasks to a qualified professional

  • Do not attempt this professional task: Measure optical power
  • Do not attempt this professional task: Check cabling before replacing the router

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.

  1. Measure optical power

    What they doThe MásMóvil technician measures the fibre signal at the wall socket and the router.

    They must show youthe reading at the socket and the router against the operator's threshold.

    In writingthe faulty section and what was repaired.

  2. Check cabling before replacing the router

    What they doThe technician checks the patch cable, wall socket and optical connectors and only replaces the router if the reading points to it.

    They must show youAlarm off and Fibre solid green after the repair.

    In writingthe part replaced and whether the fault was MásMóvil's responsibility.

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.

  1. Read the indicators

    No special tools

    Who:
    you.
    How:
    Look at the front: Power, Fibre, Alarm and Internet. MásMóvil asks you to check Power, PON (Fibre) and Internet are lit.
    Result that matters:
    Which indicators are lit and how.
    If Alarm blinks red and Fibre is not solid green:
    the fibre is not arriving properly.
    If Alarm is off:
    this page does not apply; check your devices' connection.
    Evidence to keep:
    A photo of the front panel.

    Evidence: Información básica del router Livebox 6s · No funciona Internet en casa

  2. Visual check of the fibre cable

    No special tools

    Who:
    you, looking only.
    How:
    Follow the fibre cable from the wall socket to the router and check by eye it reaches both ends and is not crushed or trapped. Do not unplug it or clean the connectors.
    Result that matters:
    Whether something looks loose or damaged.
    If so:
    tell MásMóvil so their technician checks it.
    If it looks fine:
    restart the router.
    Evidence to keep:
    Photos of the cable and socket.

    Evidence: Información básica del router Livebox 6s

  3. Switch the router off and on

    No special tools

    Who:
    you.
    How:
    Switch the router off, wait a few seconds and switch it back on, as MásMóvil says.
    Result that matters:
    The Alarm indicator and the Fibre light after startup.
    If Alarm goes off and Fibre stays solid green:
    the connection recovered.
    If Alarm blinks red again:
    run the self-diagnosis.
    Evidence to keep:
    Time of the restart and light states.

    Evidence: No funciona Internet en casa

  4. Self-diagnosis and report to MásMóvil

    No special tools

    Who:
    you, in Yo soy Más or on 900 696 000.
    How:
    In Yo soy Más go to Account, Help, Check status to run the diagnosis and open a fault.
    Result that matters:
    The diagnosis logging the fibre fault.
    If it detects a fault:
    MásMóvil handles the repair.
    If it finds nothing:
    call and explain the Alarm state with your photos.
    Evidence to keep:
    Fault number and date.

    Evidence: No funciona Internet en casa

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
MásMóvil
Product type
Fibre routers

Known code variants

  • digi fibra 10gb luz roja
  • digi router alarma roja parpadea
  • digi zte alarm red blinking
  • livebox 6s luz roja
  • livebox 6s zte alarma roja
  • luz alarma roja intermitente digi
  • masmovil alarma roja parpadea
  • masmovil fibra luz roja
  • masmovil router luz roja
  • router digi luz roja parpadeando
  • router masmovil luz roja intermitente
  • zte f8648p alarma rojo

What it means

MásMóvil describes the Alarm indicator on the ZTE Livebox 6s blinking red fast as fibre disconnected or low signal. In that state the router does not complete registration on the fibre network, so the Fibre and Internet lights do not reach solid green either. It can be the cable, the wall socket or the network. The light does not say which section and does not prove the router is faulty.

Warnings and stop conditions

  • Lowsource verified

    MásMóvil says a technician visit costs 72.60 EUR unless the fault is its responsibility: ask for the cause in writing.

    Evidence: No funciona Internet en casa

  • Mediumsource verified

    Do not press Reset for 5 seconds to fix this state: MásMóvil says it restores factory settings. Do not unplug or clean the fibre either.

    Evidence: Información básica del router Livebox 6s

Symptoms and causes

Probable causes · in order

  • Fibre disconnectedPossible

    This is MásMóvil's first reading for the state. It is visible if the connector is out of place.

    Evidence: Información básica del router Livebox 6s

  • Low fibre signalPossible

    The cable is connected but little signal arrives, from a damaged section or a network problem; the technician's reading confirms it.

    Evidence: Información básica del router Livebox 6s

  • Passing router faultPossible

    If after switching the router off and on the Alarm goes off and Fibre stays solid green, the fault was not on the line.

    Evidence: Información básica del router Livebox 6s · No funciona Internet en casa

Virtual technician

Does ALARMA-ROJO-INTERMITENTE 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.

Start diagnosis

Sources and technical references

  1. 1

    Información básica del router Livebox 6s

    MASMOVIL · 2026 · official_doc

  2. 2

    No funciona Internet en casa

    MASMOVIL · 2026 · official_doc

Sources: Información básica del router Livebox 6s · No funciona Internet en casareviewed 2026-10-03 · verified

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