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Tutorial · Article 2026

How to set up the Fermax Blue app step by step (and common errors)

📅 June 2026 ✍️ Fermax Technical Service Valencia ⏱ 8 min read

Just installed a Fermax WiFi monitor and the app won't quite connect? Here are the requirements, the pairing process step by step, the errors we see most often in Valencia and everything you can do once it's set up: answer your door from your phone, wherever you are.

What you need before you start: Fermax Blue requirements

Before downloading anything, check that your installation meets the requirements. Most of the calls we get in Valencia about "the app not working" come down to one of these four points being missed:

  • Compatible monitor: you need a monitor with built-in WiFi, such as the VEO XS WiFi or the VEO XL WiFi (DUOX Plus system). Older handsets and monitors without WiFi cannot be linked.
  • 2.4 GHz WiFi network: the monitor only connects to the 2.4 GHz band. If your router broadcasts on 5 GHz only, you'll need to enable the 2.4 GHz band in its settings.
  • WiFi coverage next to the monitor: the monitor usually sits in the hallway, sometimes far from the router. Without a good signal at that spot, calls will arrive late or not at all.
  • Fermax Blue account: created free of charge from the app itself with your email address; remember to verify it via the confirmation email.
💡 Key fact: if your building has a conventional Fermax intercom or video intercom, in many cases we can replace just your monitor with a compatible WiFi one without touching the communal installation. We explain it all in our complete Fermax Blue video intercom guide.

Pairing the monitor with the app step by step

With the requirements covered, pairing takes about ten minutes. Follow this order and don't skip any step:

  • 1. Download the app: search for "Fermax Blue. You're at home!" in the App Store or Google Play and install it on your phone.
  • 2. Create your account: sign up with your email, accept the terms and confirm the account via the verification email.
  • 3. Connect the monitor to WiFi: open the monitor's settings menu, select your 2.4 GHz network and enter the password.
  • 4. Scan the QR code: in the app, tap "Pair home" and scan the QR code shown on the monitor's screen (or on its label, depending on the model).
  • 5. Enable call forwarding: check that forwarding to your phone is switched on both on the monitor and in the app.
  • 6. Run a real test: ask someone to call from the street panel and confirm the call reaches your phone with image and sound.
Technician's tip: after pairing, look at the WiFi icon on the monitor: it should stay solid, not blinking. If it blinks, the monitor hasn't finished connecting to the network and calls won't be forwarded to your phone, no matter how configured the app looks.

Common errors when setting up Fermax Blue (and how to fix them)

These are the faults we see most often when a customer in Valencia calls us because "the app isn't working". Almost all of them have a quick fix:

ProblemCause and fix
Monitor can't find the WiFi network5 GHz network: enable the 2.4 GHz band
Calls don't reach the phoneCall forwarding switched off
Call arrives late or dropsWeak WiFi signal next to the monitor
Another family member gets no callsThey need an invite from the owner's app
QR code won't scan or gives an errorRestart the monitor and pair again
Works at home but not awayPhone permissions or battery saver

If the problem persists after checking the table, it may be a fault in the monitor itself, in the flat's programming or in the DUOX installation. In that case we diagnose it on site in Valencia and the province, with a quote before touching anything.

What you can do with Fermax Blue once it's set up

Properly configured, the app turns your video intercom into a connected device. These are the features our customers value most:

📱 Answer from your phone
Receive the call from the entrance on your smartphone with video and audio, whether you're at home, at work or on holiday.
🔓 Remote door release
Open the building door from the app: ideal for couriers, relatives or visitors when you're not at home.
👁 Auto-on
Activate the street panel camera whenever you like and check who's at the entrance without anyone ringing.
👨‍👩‍👧 Share with the family
Invite other users from the app so the whole family receives calls on their phones.

These features are especially useful if you manage a rental flat or a holiday apartment in Valencia. And if you still have an old-style handset, here's how to replace an old intercom with a video intercom with connectivity.

Frequently asked questions

Is my Fermax monitor compatible with the Fermax Blue app?

Compatible monitors are the models with built-in WiFi connectivity, such as the VEO XS WiFi and the VEO XL WiFi (DUOX Plus system). If you have an older monitor or handset without WiFi, it can't be linked directly: the solution is to replace it with a compatible monitor, a swap we carry out in a single visit in Valencia.

Why aren't calls reaching my phone with Fermax Blue?

The most common cause is that call forwarding is switched off on the monitor or in the app. It's also worth checking that the monitor has a good WiFi signal, that the app has notification permissions on your phone, and that the phone's battery-saving mode isn't closing the app in the background.

How many phones can receive the video intercom call?

The account holder can invite other users directly from the app, so several family members receive the call at the same time on their phones. Each guest installs Fermax Blue, creates their own account and accepts the invitation: there's no need to pair the monitor again.

Is the Fermax Blue app free or does it have fees?

The Fermax Blue app is free and has no monthly fees: you only need a compatible monitor, WiFi at home and a user account. The only cost is the equipment and its installation, which we quote with no obligation in Valencia and the province.

Can't get your Fermax Blue working?

We install compatible WiFi monitors, pair them with your phone and leave the app fully working. Valencia city and province.

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