White towels in the Siemens Siwamat 6120

[foraloysius]

I did a "boilwash" in my Siemens Siwamat to get my white towels a few shades whiter again. I selected the 90 degrees Celcius Cotton programme with Extra Water and Intensive/Stains. I also let the machine do a prewash. When I heard the machine filling a few times in the mainwash I took a look. Much to my amazement the machine had filled to the highest water level.

I measured the temperature of the doorglass a few times. The 90 degrees Celcius were never achieved (what a surprise), but when at 70 minutes remaining time the heating stopped, the doorglass was 77 degrees Celcius.

Rinses were done at a lower water level, so I give them an extra rinse with the highest water level (Extra rinse with Extra Water).

 

[frigilux]

That water level really is high by our HE standards. My Maytag would have sensed a flooding situation, drained and displayed an error code, LOL.

77 C. is approximately 170 F, which is far hotter than most US washers' maximum temp---generally 150 to 155 F.

Question: Are the Siemens and Bosch brands related?

 

[henene4]

BSH group

They are and were for most of their existence pretty much the same, just as it is with Neff, Constructa and some brands who just use some of the lineup, for example Gaggenau who is part of the BSH group, but is famous for its ovens and steamers and therefor sells just rebaged cooktops, dishwashers and such.

77C is indeed really hot already, but not quite 90C. And yes, this waterlevel is absurdly high and I don't think this should ever happen on a mainwash, at least not fir that model. Most likely just a glitch.
On flooding conditions: I once washed some sofa pillows in our AEG. As some items do, they absorbed more water when they were cool then they could hold when they were hot. Thus, they gave out so much water during the mainwash that they triggered tge flooding protection.

 

[foraloysius]

As a matter of fact a friend of mine had this exact same machine but then with a Bosch control panel on it. I'm not sure how these things work with BSH, perhaps they even came from the same production line?

The higher water level is indeed not as it should have been. This is the water level is used in the delicate cycle (after a short while washing with a lower water level). Something must have tricked it to choose this level, but I have no idea why. In the beginning it used a lower level, normal for the extra water setting. Prewash and rinses were done at a normal level too.