Highly unlikely you're going to get a reply.
1. this thread was 4 years old! The kettle may not be working anymore.
2. Career26 has not been online for over a month!
3. Career26 is very inactive. Two posts in February, and before that it was May last year!

I don't have that kettle, but I'm guessing that the keep warm function don't have a timer and will go on indefinitely.

But it isn't a thermo pot. The thing looks to be made of metal, and has no insulation. Your electric bill is sure to go through the roof. Something like this was mentioned in the earlier pages on this thread, in 2015.