Chronic Condensate Exchanger Explosion in the Buderus Combi Boiler

I have 2 Buderus GB012 model combi boilers in 2 different flats in the same building. As far as I learned during the meetings held in the 100-unit apartment, no one uses Buderus except me, they prefer affordable products. The condensation exchanger of both boilers exploded twice in 3 years. When I looked at the complaint website, I saw that this was a chronic problem and that hundreds of people, including me, had encountered this problem. I wish I had looked before and I wouldn't have had this regret. I hope someone else who wants to buy Buderus reads this article and doesn't give up and regret it as I did.