The default temperature setting is Boil / 212°F. Press the Set Button to select from 6 different temperature settings. Press the Keep Warm Button to preserve the temperature of the boiled water. Once the keep warm function is activated, the heat will be preserved for 30 minutes until it automatically shuts off and enters standby mode.This water boiler kettle electric comes with a 12-months warranty from the date of its original purchase. If you have ever experienced issues with your kettle, please contact us for support. We will take care of you in 24 hours.