First, check you are connected to your home WiFi when standing next to your Smart Electric unit. Once connected, turn your hot water unit off and then on again to restart the pairing mode which will remain active for 5 minutes. If you cannot pair within this time, start again by turning your unit off and then back on.

Check that your password credentials are correct, especially when using an extender (both passwords need to match). Special symbols and characters in your password may cause an issue with connecting to the water heater.

If you’ve replaced a water heater previously connected to a controlled load i.e. off-peak tariff, ensure that power is available to the water heater. Without power, you won’t be able to connect to the water heater. We’d suggest changing your tariff to a continuous supply in this situation.

For more help, check out our App How-To video.

Use our Smart Electric Optimisation tool to find out which operating mode will be best for you and your hot water needs.

Other than interrupted power supply to the water heater e.g. relating to an off-peak tariff connection, check that the schedule is set across a 24 hour period (and not just 12 hours), and that a schedule is set for each day of the week. The app won’t copy across the schedule to other days, they need to be set for each day of the week.

You can use the Thermann Control app on a second device. A new account will need to be created on this new device. To set this up, go to ‘settings’ on the primary device, and select ‘Manage Water Heater’. Select ‘Share’ next to the water heater you wish to share and a QR code will appear on the screen of your primary device which can be scanned by the secondary device to establish a connection.

Please note, by sharing connection to a new device, you are giving consent for that device to manage your hot water unit. For more information on Access Sharing, click here.

Yes, however this is only a temporary solution. Through the hotspot you will be able to configure and save the settings and schedules for the water heater, however, remote monitoring and management of the water heater is subjected to availability of mobile data and Wi-Fi hotspot network connection (2.4GHz bandwidth) from the secondary device.

See instructions in the Owners Guide for establishing a hotspot.

The antibacterial cycle is to prevent legionella formation in the water. The cycle is triggered to heat the stored water to 62°C for 32 minutes every 7 days if the stored water temperature is set below 62°C.

No. The thermostat for the product is based low in the tank, close to the cold water inlet. When hot water is used, cold water enters the tank and it’s this temperature that the app then shows. Once the water in the tank mixes and settles, you’ll see the temperature on the app read higher again.

No. The product is only designed for connection to a 2.4GHz network.

If you cannot receive WiFi connection when standing next to your hot water system, a WiFi extender may help. Don’t worry if you cannot set up your Thermann Control App upon install, your unit will still run just like a standard electric storage unit and you can set up your App connectivity at a later date.