If it's the same case as me, after washing/boiling several times, the smell was coming exclusively plastic side of the lid, which is a bit trickier to clean. After soaking it a bit upside down and cleaning it, it got rid of the smell.

According to our information, this appliance has an EU plug. A Schuko plug is normally supplied.

It should actually be this one, but I'm not 100% sure: https://www.ersatzteileshop.de/kleine-haushaltsgeraete/philips/wasserkocher/filter/philips-avance-collection-hd935990-1785600/996510080115-filter It's best to check whether the pictures match your filter and to be on the safe side, ask their customer service to make sure that the filter is really 100% compatible: verkauf@ersatzteileshop.de

The technical data sheet states that the water is kept warm for 30 minutes. After this time, it switches off automatically.

It's exactly the same for me. I think I'll contact customer service with the problem.

I don't hear anything while it is heating up, just the "normal" beeping at the end when it has reached the temperature

Cable has a German plug :-( However, a CH-compatible adapter plug is also supplied. Together, unfortunately, an optical disaster.

Only when the cooker is running or the keep warm function is activated. It also beeps when it's ready, or if you leave it on after boiling water and don't switch it off or take it away. I think it's good

The HD9359/94 comes with a Swiss plug, the HD9359/90 has a German plug and requires an adapter.

I think it's the same model, with different temperature options.

from my experience I think about 200ml

It goes up to 40 and then stops. Raising the water to 100 degrees beforehand would cause a huge waste of time in heating and cooling time and use energy unnecessarily. However, you can do this manually if you wish.