In our C320, there was a button mounted near the sink that turned on the shower sump pump. In our new-to-us C355, there is a button mounted below the sink near the toilet. It does not seem to do anything with the sump pump.
To add to the fun, the sump was full yesterday. When I turned on the breaker for the pump, I could hear it running and watched some water swirl about, but the water level did not go down. The seacock was open, but no water was being pumped out. After a fairly short time (perhaps 30 seconds?), the pump shut off. It is an automatic pump, so I don't see how the button near the head sink is related.
I got all the water out of the sump and poured in the pink stuff for winter. My guess is that the hose from the pump is clogged. I will try blowing this out.
So, what about the button? What is it for?
Also, does the refrigerator drain into the sump?
C355 #83 - Encore