I have a Kenmore bottom freezer model # 596.72214200, also known as model 72214. Today it started making a noise that is different from the normal humming of the compressor or vibration/rattling of some loose plate. The noise is hard to describe but almost sounds like a buzzing and lasts for exactly 15 seconds, at the end of which is a definite "clicking" of something turning off (on?). Exactly three minutes after the click the noise starts again for another 15 seconds. Again and again. Fifteen seconds of buzzing, a click, then three minutes of normal operation. This just started today and so far it seems to be operating fine as far as keeping things cold or frozen. It is definitely worth noting that the problem started after a brief power interruption during which the utility company replaced the meter (the utility is replacing all the meters, nothing specific to my house). Thanks in advance for any help.