The reasons for this failure are:

The electricity is not plugged in, the switch is faulty and there is an internal short circuit.

Second, is the indicator light on?

The infrared heating device is cracked.

If there is an internal short circuit, it may be caused by improper use, water ingress, or virtual welding when leaving the factory.

If there is a crack in the heating device, the reason is that boiling water is added soon after pouring cold water for a long time, or cold water is added just after pouring cold water, or the bottom of the pot is broken because cooking food is easy to paste. This situation is not guaranteed, but when I was in Junkaiqite Office, the manager card was not very strict. If I can fix it, I will give you a new one at a discount. I wish I could help you, but you have to give me 30 gold coins.