Check plug
First, check whether the plug is stable. Loose plugs or improperly connected power outlets may cause this problem. Just make sure the plug is plugged tightly, and the problem may be solved!
Check the heating element
If there is nothing wrong with the plug, but the problem still exists, it may be that there is something wrong with the heating element. At this time, you need to take the electric kettle apart and check the heating part carefully. If you find any signs of wear or burn, remember to replace the heating element with a new one!
Check the temperature control switch.
Of course, another possible reason is that the temperature control switch is invalid. This switch controls the heating temperature of the kettle. If something goes wrong with it, the heating function may not work properly. At this time, you can try to repair or replace the temperature control switch, but if you are not sure how to do it, you'd better seek professional help.
Seek professional help
Generally speaking, the problem that the electric kettle is on but not hot is more difficult, but as long as you follow the above steps, I believe you will find a solution. If in doubt, please consult professional maintenance personnel or seek after-sales service. Remember, safety always comes first. Don't repair electrical appliances without enough knowledge and experience!