Hello, I have a question about my heater. But I did not come to the right solution with the SuFu or did not find the right one. My heater makes strange noises. I attach two audio files with me. Maybe one or the other may listen to each other and maybe also know what the problem is. I can’t imagine that this should be normal??!! I can save myself the way away, I think, because it was here of the public already written that they just want to install a new one. Oh and purely for interest, how much fuel does the stationary heating actually consume? Thank you very much