ᐅ Heating and ventilation system has broken down multiple times

Created on: 15 May 2018 13:36
M
m_l_r_s
M
m_l_r_s
15 May 2018 13:36
Hello everyone, last autumn we moved into our newly built home.

Installed is a Vitocal 200-A in combination with the ventilation system Vitovent 300-F.
By now, the ventilation system has broken down several times and the heat pump once.
Right now, the heat pump is showing a fault again.

Our heating technician is committed and reports the issue directly to Viessmann, but customer service always takes a long time to respond (several days for the heating system and several weeks for the ventilation).
Then some parts get replaced, and the system works again.

Of course, I’m concerned about how this will be in the future, especially after the warranty period expires.
So far, apart from the inconvenience and wasted vacation time, I haven’t had to cover any costs myself. Still, it’s frustrating.
At the latest when the warranty runs out, I expect to be left with the costs. I simply suspect that the heating system won’t improve and that something will constantly malfunction.

So, to cut a long story short, here is my specific question:
How many repairs (due to different faults) do I have to accept?
When can I demand a replacement? Is that even possible?
Mycraft15 May 2018 18:29
Well, the question is what exactly was broken... and which parts were replaced... maybe you have a lemon.
M
m_l_r_s
15 May 2018 18:32
When I mentioned the term "Monday model" during the last technician visit, the colleague didn’t seem to like that^^

I know that the ventilation system’s main control board was replaced three times due to various errors. Apparently, this is a standard procedure...

As for the heating system, unfortunately, my wife was present and could only tell me that something was replaced. Unfortunately, you don’t get a report.
Mycraft15 May 2018 20:21
Yes, of course, this is a standard procedure nowadays. Diagnosing and replacing the defective tiny components on the circuit board costs more than simply installing a new one.

It is possible that a component is undersized, or there is a design flaw, causing the same part to fail repeatedly. (Similar to the recurring issues in the early generations of LCD TVs)