Hi,
Since some months i have the gs/3. i pull hot water once or twice a week. Now i have the Situation that after pulling a Cup of hot water the water does not stop completely. I have to Switch on and Off for 1-3 Times and than the valve closes completely. This behaviour comes up when th water outlet is Not used for some days.

Any ideas

Axel

When was the last time you descaled?
Could be the solenoid has a little schmutz in it. You can try disassembling that one valve and clean it separately if you want, but it would be a good idea to have a general assessment of the machine as a whole.

What's the history?