Avoid if you can
Setting up an account is like getting in to Fort Knox, especially if you are part of a shared household with different log on ids
Pointless
This app is completely useless. Scan to connect wifi, despite being a new boiler if fails as it wont recognise the qr code. Want to reset your boiler because it has a fault, you need to find the website and download a pdf manual then do it manually - what is the point in having a wifi connected boiler if the connection does nothing? What to know about the current error code? Well the app gives next to no information, doesn't tell you the date or time the error occurred and won't let you clear the error from the app. Want to book a service for your boiler? Well the app doesn’t do that either. It has very basic info on current temperature, no real information on performamce over time. In fact I have no idea why there is even an app as it serves no actual benefit to the customer.
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Complicated
Sometimes I will press the “ok” button on the boiler by mistake, putting it into “AP” mode. I then spend the next hour trying to repair the boiler to the internet. You have to love Viessmann for simplicity
Recent software updates - junk
The previous versions of the app worked just fine and was intuitive. This latest version of software is useless. Very frustrating to lose the functionality that was marketed to us users.
Rubbish UI/UX
On iPhone 14 Pro the app can’t scan the QR code as it opens the main camera which can’t focus on the QR code. Never mind, let’s try entering the ID manually. Well, the ID is in hexadecimal format but you can’t type letters as the app brings up the numeric keypad.









