Voidance of warranty due to alteration of original settings?

I only changed settings whose effects I was aware of. The heating curve is not one of them.

Why not the heating? It is an essential element and is set to 08/15 by 90% by the heating engineer or you get the preset curve left. Like with the TV – the factory settings are rarely suitable. There is hardly anything that can go wrong (in the sense of breaking) – before you notice that it is too warm or too cold in the place.

I can also confirm this with our gas condensing boiler: installers (commissioning/maintenance) set it up so that the manufacturer's specifications are not exceeded and that the customer generally does not complain about a cold house. While this commendable goal mostly (a) disregards individual circumstances and (b) usually costs much more energy than necessary. Of course, the concern of the heating technicians is understandable—but rarely effective. For example, our heating system switched on and off excessively often due to the increase in the flow temperature by the colleagues. The impact this has on wear and tear is obvious. In the end, in case of a dispute, only a court or an expert can determine whether customer-side adjustments caused damage. I therefore consider it unbelievable to generally speak of warranty expiration.

What is also crucial is what exactly the 5-year warranty covers. It can be designed very differently from a statutory warranty. A warranty is company-specific.

Thanks again for your assessments!

I didn’t want to be too detailed, but you still need some information, or rather I will repeat it.

1. I had no trust in the maintenance company because they could not answer any of my questions about the purpose of the parameters. Shortly after commissioning, when the heating was on “warning” due to too low water level, I was told to fill in tap water by myself. For that, you need a hose with 2 closures. The customer service of Tecalor said that even the smallest amounts of water containing lime can clog the valves. So much for the topic “small things endanger the warranty.”

2. I changed settings that are quite obvious from my point of view (presence, summer-winter settings, water temperature, solar system, vacation, and the ventilation volume). I made these settings live according to the recommendations of the manufacturer Tecalor. Later, I also used filters with higher capacity, which certainly increases energy consumption but is useful for pollen allergies. The lifespan of the fans may possibly be shortened by this. But a filter that is changed rarely does the same.

3. The valve settings were allegedly calculated by Tecalor according to room size. So I left the valves as they were, but reduced the volumes.

In short: All customers have to operate their systems as they were originally set. It should not matter which season it is, how many people live in the household at what time, or what temperature is perceived as comfortable, whether for water or air.

If there is a company in the Nuremberg area that takes over maintenance, I would be happy to receive their name by private message.

I have not yet received any response from Tecalor or the maintenance company as to why there might no longer be a warranty or which regulations I might have violated.

Best regards

Those are indeed interesting restrictions that you are demanding.

I would be very interested (also gladly via PM) to find out which company in the Nuremberg area is familiar with the construction and maintenance of Tecalor systems (if necessary also Stiebel Eltron systems). Because what you describe reminds me terribly of our company and I do not want to enter into a binding maintenance contract with this company. Does anyone happen to know here whether ONLY the company that installed the device is able to guarantee the 5-year warranty or also any other company that is certified for Tecalor? Because the way you write it, the behavior of your company sounds like the former. Monopoly position, basically.

Best regards

Does anyone here happen to know if ONLY the company that installed the device is able to guarantee the 5-year warranty or if any other company certified for Tecalor can do it as well?

See conditions for the 5 years:

==> Specialist craftsmen (can be anyone) or the factory customer service