vitotrol 300e lost connectiton to vitodens 222 f

[delphiswang]

Hello

I have a vitodens 222f which is controled by vitotrol 300e. for the last one year, it worked fine.

From last week, vitotrol 300e lost connectiton to vitodens 222 f, at very begining, it display the photo 1. after several times of restart, it give me the photo 2 with QR code and photo 3.

I tried to reconnect and it doesn't work, I called my contractor, but he has no way to reconnect it.

could you please help me?

[CustomerCareChris]

Hello delphiswang,

in this community we can only support devices sold and operated in Germany since we have no access to devices and accounts located outside of Germany.

Please contact your regional service via mail, you can find the address on the Viessmann homepage of your country under "Contact".

However there seems to be an issue with the firmware of this type of communication module, which is already reported to our engeneers who are working on a solution.

Best regards,
Chris - Customer Care Team

[delphiswang]

please, next time if you need to do any update, do it in summer, now it is still cold but my heater is not working!!!