Thanks for choosing Sonya Hot Pot. Please do not worry, this machine comes with 1 year manufacturer warranty. If it is really defective, you can please be free to contact the service department by email to service@ezbyonline.com. They can send you the new bottom part (main body) at free of charge.
Gentle reminder, this machine has a energy save design that the machine will automatically keep warm after the water is boiling (it reaches to the max heating temperature), at this time the light will turn off. And when the temperature gets lower (reach to a certain temperature), it will automatically turn on to heat up again.