A comment
I bought a gas column Superlux Ariston in Leroy Merlin Klimovsk. We installed it ourselves, the guarantee, of course, was canceled, and it worked for less than a day, and then it broke. Most likely a factory marriage, but no one wants to admit it. They themselves came up with rules that are beneficial only for them, they say, if there is no installation certificate, then the guarantee will be void, probably specially so that fewer people apply for the guarantee, because most set themselves illegally, risking being left without a guarantee and repairing at their own expense, and it’s just for them.
Mayhem and outrage, seemingly a solid company, and the goods are full of g ... How do their defective goods get into stores? Are there any people who look after all this? If their reputation is not important for them, let them continue in the same spirit, but sooner or later they will pay for it. Advice to others: before installing something related to gas, do not do it yourself, but look for officials, or at least gas workers, who will provide an installation certificate or something like that.