Oh no! Most of our appliances are fitted with an in-house thermal cut-off system. That means that when there isn't enough water in the percolator, the appliance will automatically shut-off and discontinue its heating mechanism in order to avoid over-heating/fire hazards. If this has occurred to your system, the coffee urn's light will still show that it is on, but it will not be able to boil water again even if you add more water. In order to make the appliance operational again, the reset button on the bottom of the appliance must be pressed once the appliance has cooled down sufficiently. First, unplug your appliance, let it cool, plug it back in, turn it on, press the reset button, and all should be well.