
Z.G. G.
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Edited. horrible. I pressed ok on the boiler and since then app lost internet connection! absolutely horrible brand. regret buying it big times! All working as expected now after getting serwisant in to set up thermostat. Now the humming noise is gone - nobody told me it would be the solution. Regarding app use , Hive has better features like diagram to show when burner went off and for how long it did at the time. Vicare only shows amount of gas in bar chart. Not very useful.
1 person found this review helpful
Viessmann IT Service GmbH
January 2, 2025
We would like to take a closer look, analyze it and find a solution for you! Please send us an email with a short description or photos / screenshots and the serial number of communication module to customer-contact+Z.G.G.@viessmann.com We apologize for any inconvenience, Z.G. G.! #WeCare

François Colbach
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I like the app and also the recently added geofencing functionality. Unfortunately, it recently stopped working correctly: when I'm away, the app does everything as designed (showing that I'm away, pausing the time program, limiting user input, ...), BUT it's not applying the reduced temperature, which is the essential part of the geofencing feature. It works sometimes, but by far, not always. I cannot rely on it. Please fix this.

-log [H]
Quite good but with one design flaw. Having two levels of desired warm temp, comfort/normal is good. Having a quick selection to extend the heating on period until the next time set is great. But it's poor that manually changing the target temp during a period simply changes the value of comfort/normal/reduced for all thereafter. I can set these values separately elsewhere. If I manually change the temp during the current period I expect it to last ONLY for the current period. Please consider.
2 people found this review helpful
Viessmann IT Service GmbH
December 22, 2025
Hello -log [H], many thanks for the constructive feedback! We have taken up your suggestion and will check it during further development. #WeCare