If you ever feel your 4 ounce kettle is not heating properly, here is one way to check. Start off by unplugging your 4 ounce kettle from the top of the machine. Then plug it into a
grounded extension cord. If your Kettle is working properly, it will begin to warm up. Check this by slightly tapping the kettle with your hand. Be cautious when doing this. It may be extremely hot. If there is no heat to the kettle after 3 minutes, you will need to replace it. If the kettle is working properly, plug it back into the top of the machine.