nothing to say regarding the foncionnement and ergonomics ... when it works! Past two years, the selection button on the heating power no longer worked, even without turning as brutos. Forced to order a new electronic card to change it (against 35 100 for the price of a new furnace, the guarantee being exceeded 2 months!). Going up the new electronic card, I perceive myself that the time setting button no longer works. And because it was designed so that it was in touch with a plastic strip thinner than a fingernail ... and that eventually bend and break. In short, Samsung, the beautiful basic technology, ergonomics and beautiful g .... beautiful foutage regarding longevity because the commands that are used every day do not take the road much beyond the legal guarantee. It's called the progammée obsolescence. Samsung thank you!