It is because the power supply is not connected to the electric heating tube circuit. Under normal circumstances, the resistance is ∞ when the reset switch is not pressed, and the corresponding resistance of 1500W electric thermos is about 32 Ω when the button is pressed. If the resistance value is still ∞ after pressing the button, it means that the heating pipe circuit does not work. At this time, the resistance at both ends of the 3-pin plug N and L of the pot body can be measured again, and the normal value is the same as above. If the actual test results are normal, the fault is in the base part. Check the connection between the power cord and the socket for open circuit or poor contact. The basic structure is simple and the fault is found quickly. The solutions to the problem that the electric hot water bottle is not electrified are: 1. Check whether the electric kettle base is in good contact with the electric kettle. For example, there is a foreign body at the bottom that hinders the normal contact between the base of the electric kettle and the kettle. If it is found out, it is really because there is a foreign body. It is recommended to take out foreign bodies in time. 2. It is also possible that the power cord of the kettle is broken, because everyone knows that the power cord of the kettle is short. If the socket is in a bad position, or bitten by a mouse when it is idle, or damaged by something. This is the cause of the damage. It is suggested that we repair the broken line or replace the new power cord in time. 3. It is also possible that the switch of the electric kettle is damaged, which leads to the failure of timely and normal power supply. The electric kettle is connected normally and still cannot be started after power failure. In this case, it is best to repair it in time. If it is poor contact, it is recommended to repair or replace it with a new one in time.