Chosen Solution
The kettle doesn’t shut off when it reaches boil. Is there any way to repair?
Your thermostat has failed. It appears Delong does not sell the part. http://www.ereplacementparts.com/delongh… You could try taking the bottom off and see if it can be opened. Then post a couple of pictures and we can see if we can suggest a repair.
I’ve just had the same issue on a Hario Electric Buono kettle. I took it apart and realized that the bimetallic thermostat had rust on it, preventing it to do its work and “snap” when the steam reached it. It’s a little disk made up of two different types of metals that changes shape with heat. In my case, the fix was easy: I used a metal brush to clean it up and it corrected the issue. It could be work taking a look at your kettle to see whether it could be the same issue.
Is the sieve missing ? Or is it broken ? Most cookers are switching off by “enough" steam. If the steam can leave the cooker too fast, they won’t switch off immediately They switch off quite delayed. Try to get a new sieve. To test, if this reflect’s your case - you can test by carefully “blocking" the exhaust e.g. wiping cloth. But carefull - it get’s hot !
