What could the problem be that Truma appliances cannot be controlled via the Truma iNet Box?

It is possible that the Truma iNet Box is not initialised correctly. Check whether the iNet Box is ready for operation:

  • Check whether the Truma appliances are connected correctly and are ready for operation.
  • Restart the Truma iNet Box. To do this, disconnect the supply voltage for about ten seconds.
  • Check that the mini SIM card you are using works. It is possible that your provider has blocked the SIM card.
  • Check the PIN in the set-up wizard of the Truma App.
  • Check whether the aerial switch “int.” / “ext.” is at the correct position.
  • Make sure that Bluetooth is enabled and connected on the mobile device and that the battery of the mobile device is charged.
  • Make sure that you are within Bluetooth range and that the connection was established successfully.
  • Set up the Bluetooth connection again.
  • Message
  • Service Helpline
  • Service Centre
  • Dealer search

One number for all cases:

+49 (0) 89 4617-2020

Do you have a question about a product, would you like to arrange an appointment with a Truma Service technician or do you need assistance? Just call us.

Service times:
Monday to Friday from 8 a.m. to 6 p.m.


If you have a question about an appliance, always have information about the appliance type, year of manufacture and factory number at hand. You'll find this on the type plate on the appliance.

Truma type plate

Visit the Truma service workshop!

Service directly from the manufacturer: The Truma Service workshop is located in Putzbrunn, near Munich, Germany. Our staff are very familiar with all Truma products, install devices and repair devices that have already been installed.

Service times

May to September
Monday – Thursday: 7:30 a.m. – 4:30 p.m.
Friday: 7:30 a.m. – 3 p.m.

October to April
Monday – Thursday: 7:30 a.m. – 4:30 p.m.
Friday: 7:30 a.m. – 4 p.m.

To arrange an appointment, call

+49 (0) 89 4617-2020

Truma Servicewerkstatt
Michael-Haslbeck-Straße 13
85640 Putzbrunn, Germany

No sale of spare parts / Please do not send any equipment to Truma without being requested to do so.

Find your nearest Truma Expert.

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