Voidance of warranty due to alteration of original settings?

Then I will have a look there. To me, it doesn't read as strict up to this point as the maintenance service formulated it. It surprises me that they are showing such a hard line there, as warranty services in other economic sectors are always covered by the manufacturer. Car repair shops, for example, have gladly taken on warranty services because their labor time was paid and the material was provided by the manufacturers.

I have now read the warranty/guarantee conditions and will insert them in the thread Wärmepumpen/ Lüftung, as the Tecalor 5.5 Eco is less of a classic heating system and certainly not an air conditioning unit. Because the topic should mainly interest owners with maintenance obligations for heat pumps, who probably would not seek advice in the heating thread.