How to connect a Zanussi water heater to Wi-Fi: 2026 instructions

Water heaters Zanussi Wi-Fi-enabled boilers transform routine hot water management into a convenient process. Now you can remotely turn on the heating before returning home, monitor the temperature, or receive notifications about malfunctions—all from your smartphone. But how do you properly connect the boiler to your home network to avoid errors and ensure reliable operation?

In this article you will find step-by-step instructions for models Zanussi ZWH/S, ZWH/S Pro and other series with a Wi-Fi module, we will analyze typical problems (for example, an error E12 or the absence of a network in the list), and we will also show you how to set up the application Zanussi Home for maximum comfort. We will pay special attention connection security — Why you shouldn't use public networks and how to protect your boiler from hacking.

Which Zanussi models support Wi-Fi?

Not all water heaters Zanussi equipped with a Wi-Fi module. This feature is available in the series released after 2020, with a note Smart or Wi-Fi Ready on the body. Here are the key series:

• 🔹 Zanussi ZWH/S — basic series with support for remote control via an application.
• 🔹 Zanussi ZWH/S Pro — advanced functions (heating schedules, energy saving).
• 🔹 Zanussi ZWQ — flow-through models with Wi-Fi for instant temperature control.
• 🔹 Zanussi ZWS — vertical boilers with an integrated module (requires activation).

To check if your model is compatible, look for the serial number sticker on the back panel. If the serial number contains letters SM (For example, ZWH/S 80 SM), the device supports Wi-Fi. You can also check this information in product passport or on the official website Zanussi in the specifications section.

⚠️ Attention: Wi-Fi modules in boilers Zanussi work only with networks 2.4 GHzIf your router broadcasts two frequencies (2.4 and 5 GHz) under the same name, when connecting, select the network marked 2G or 2.4G manually.

If your model is not on the list but you want remote control, consider the option with external module (For example, BroadLink RM4 Pro). It connects to the boiler via an infrared port and simulates button presses, but requires additional configuration.

Preparing for connection: what you will need

Before you begin setup, make sure you have everything you need:

• 📱 Smartphone on Android 8.0+ or iOS 12+ with the application installed Zanussi Home (download in App Store or Google Play).
• 🔌 Working water heater Zanussi with a Wi-Fi module (connected to the power grid and water supply).
• 📶 Router with network 2.4 GHz (the password and network name must be without Cyrillic characters and spaces).
• ⚡ Stable power supply - with voltage surges The Wi-Fi module may be disabled.

Also, check that the boiler is in a strong signal area. If the Wi-Fi signal is weak (less than 2 bars on a smartphone), use repeater or move the router closer. For testing, temporarily disable the router's "Speed ​​Up" feature. WPA3 - some models Zanussi do not support this protocol.

Install the Zanussi Home app|

Connect the boiler to the power supply|

Check Wi-Fi name and password (Latin only)|

Disable VPN on your smartphone|

Place the router closer to the water heater-->

The Wi-Fi module in Zanussi boilers does not support hidden networks (SSIDs). Before connecting, make the network visible in your router settings.

Step-by-step instructions: connecting to Wi-Fi

The setup process takes no more than 10 minutes. Follow the instructions step by step to avoid errors:

1. Activate connection mode on the boiler. To do this:

   • Press and hold the button Wi-Fi (or Smart) on the control panel for 5 seconds until the indicator starts flashing.
   • On some models (eg, ZWH/S 100 Pro) you need to go to the menu: Settings → Network → Wi-Fi.

Launch the application Zanussi Home and select Add a deviceIn the list of equipment types, please indicate Water heater.

Connect to a temporary network boiler. It will be called Zanussi_XXXX (where XXXX are the last digits of the serial number). The password is usually indicated on a sticker or in the instructions (by default - 12345678).

Return to the application and select your home network 2.4 GHzEnter the password and wait for connection confirmation (the indicator on the boiler will stop flashing).

If at step 3 the smartphone does not find the temporary boiler network, check:

• 🔋 Is the water heater powered by the network (indicator) Power should burn).
• 📵 Is the phone in sleep mode? On the plane.
• 🔄 Does your antivirus (for example) block it? Avast or Kaspersky) connection to new networks.

What should I do if my boiler won't connect to Wi-Fi?

1. Restart the router and water heater (unplug from the outlet for 30 seconds).

2. Make sure that the network name does not contain spaces or special characters (e.g. #, @).

3. Check if the number of devices connected to the router has been exceeded (the limit may be in the DHCP settings).

4. If you are using a dual-band router, temporarily disable the 5 GHz network in its settings.

5. Update the boiler firmware via the application (section Settings → Software Update).

Once successfully connected, the boiler control panel will appear in the app. Here you can:

• 🌡️ Set the temperature in 1°C increments (range: 30–75°C).
• ⏱️ Set up a heating schedule (for example, a night rate).
• 🔔 Receive notifications about heating completion or errors (e.g. E01 - no water).

Setting up the Zanussi Home app

Application Zanussi Home Allows you not only to control your boiler but also to optimize its operation. After initial connection, we recommend adjusting the following settings:

1. Create a user profilePlease enter your name and email address (this will be useful for restoring access).

2. Set up notificationsGo to . Settings → Notifications and enable the options:

   • 🔥 Hot water is ready (when the set temperature is reached).
   • ⚠️ System errors (eg leak or overheating).
   • 💡 Energy saving (tips for optimizing energy consumption).

Activate geolocation (optional). Function Smart Home will automatically turn on the boiler when you approach the house (radius is adjustable).

To save energy, use Eco mode (on the menu Heating modes). It maintains water temperature at 55°C—sufficient for household use and safe against bacterial growth. The app also provides kWh consumption statistics for the day, week, and month.

⚠️ Important: If you use a boiler in a rented home or office, disable the geolocation feature. Otherwise, the new owner of the smartphone (if you sell the phone) will be able to control your device.

Common mistakes and their solutions

Even with a proper connection, errors can still occur. Let's look at the most common errors and how to fix them:

Error E12: No Wi-Fi connection

Reasons:

• 📶 Weak router signal (the boiler is too far away).
• 🔒 Incorrect network password.
• 🔄 IP address conflict (DHCP is disabled on the router).

Solution:

1. Reboot your router and boiler.
2. Check your password (case sensitive!).
3. Enable DHCP in your router settings or assign a static IP to the boiler.

Error E03: The server is unavailable.

Occurs when the application cannot connect to the cloud. ZanussiThis is usually a temporary glitch. Try:

• 🌐 Switch from mobile Internet to Wi-Fi (or vice versa).
• ⏳ Wait 10–15 minutes and try again.
• 📱 Update the app Zanussi Home to the latest version.

The boiler is connected, but it is not displayed in the app.

Possible reasons:

• 📱 The app is not updated (an outdated version may not support the new model).
• 🔄 The boiler reset its settings after a power outage.
• 🛡️ The router's firewall is blocking the connection (open ports) 8080 And 443).

If the problem persists, please do the following: network reset on the boiler: press the button Wi-Fi for 10 seconds until the indicator goes out. Then repeat the connection procedure.

E12 (no network connection)|

E03 (server unavailable)|

Boiler not showing up in app|

Another problem|

There were no mistakes-->

Security: How to protect your boiler from burglary

Smart devices are often targeted by hackers. To protect your water heater Zanussi:

• 🔐 Use a complex password for Wi-Fi (at least 12 characters, with numbers and special characters).
• 🛡️ Disable WPS on the router - this protocol is vulnerable to brute force attacks.
• 🔄 Update your firmware regularly boiler (in the appendix Zanussi Home check the section Updates).
• 📵 Do not connect the boiler to public networks (in cafes, hotels, etc.).

If you notice any suspicious activity (for example, the boiler turns on by itself), immediately:

1. Reset the Wi-Fi settings on your device (button Wi-Fi for 10 seconds).
2. Change your home network password.
3. Check the list of connected devices in the router for unknown gadgets.

⚠️ Note: Some models Zanussi (For example, ZWH/S 50 Smart) use an unsecured cloud connection by default. Enable this option in the app settings. Secure connection (TLS), if available.

For additional protection, you can create guest network On your router, specifically for smart devices. This will limit a hacker's access to your main devices (laptop, smartphone), even if they hack your boiler.

Remote control: capabilities and limitations

Application Zanussi Home Allows you to control your boiler from anywhere in the world with internet access. However, there are some caveats:

• ✅ Available functions:
  • 🌡️ Temperature setting (from 30 to 75°C).
  • ⏱️ Create a heating schedule (up to 6 time points per day).
  • 📊 View energy consumption statistics.
  • 🔔 Receive push notifications about device status.
• ❌ Restrictions:
  • It is not possible to turn on the boiler remotely if it physically disconnected from the power grid.
  • If the internet connection is lost (for example, the power goes out), the last command will not be saved.
  • Some models do not support voice control through Alice or Google Assistant.

For maximum comfort, adjust automation via the app. For example:

• 🕒 If the time is 22:00, then turn on the heating to 60°C (night rate).
• 📍 If I leave the house (by geolocation), then turn off the boiler.
• 🌡️ If the water temperature is below 40°C, send a notification.

If you need to integrate your boiler into a smart home system (e.g. Yandex Smart Home or HomeKit), use intermediate hubs like Home Assistant or Yandex Station. There is no direct connection to these platforms. Zanussi Not yet.

Frequently Asked Questions (FAQ)

Is it possible to connect an older Zanussi model to Wi-Fi using an adapter?

Yes, but only through external modules type BroadLink RM4 Pro or Sonoff TH16They plug into the boiler's outlet and control the power supply via Wi-Fi. However, these solutions don't provide temperature control—only on/off control.

Why does the boiler disconnect from Wi-Fi after turning off the lights?

This is due to the fact that the Wi-Fi module in Zanussi does not have a backup power supply. If the power goes out, all network settings are reset. To avoid reconnecting, use uninterruptible power supply (UPS) for the boiler.

How do I reset my boiler's Wi-Fi settings if I've forgotten the password?

Press and hold the button Wi-Fi on the control panel for 10-15 seconds until the indicator goes out and flashes again. After this, the boiler will create a new temporary network. Zanussi_XXXX with default password (12345678).

Is it possible to control the boiler via 3G/4G if there is no Wi-Fi at home?

No, boilers Zanussi connect only to local networks 2.4 GHzHowever, you can use mobile router (For example, TP-Link M7350), which will distribute Wi-Fi via a SIM card.

How to update boiler firmware?

Updates come automatically, but you can check them manually:

1. Open the app Zanussi Home.
2. Choose your boiler.
3. Go to Settings → Software Update.
4. If a new version is available, click Refresh.

Do not disconnect the boiler from the power supply during the update!