1. Set the multimeter to the ohm range (Ω), insert the red test lead into the VΩmA jack, and insert the black test lead into the COM jack.
2. Remove the three-core plug from the base of the electric kettle and find the two terminals connected to the thermostat (usually L and N)
3. Use the two test leads of the multimeter to touch the two terminals respectively, and observe the displayed value of the multimeter.
4. If the displayed value is infinity (OL), it means that the thermostat is in a disconnected state. At this time, the reset button (usually marked on the base) should be pressed to close it.
5. If the displayed value is a small value (generally between 30-50 ohms), it means that the thermostat is in a closed state. At this time, you should put it into hot water (or heat it with a lighter) to turn it off. open.
6. If the displayed value is still infinity after pressing the reset button, or the displayed value is still a small value after adding hot water, it means that the thermostat is damaged and needs to be replaced.
7. If the displayed value changes to a smaller value after pressing the reset button, and changes to infinity after adding hot water, it means the thermostat is working normally.
