I have a top mount Whirlpool fridge at the beach house. Its about 4 years old and within a few months of purchase it started making groaning noises every time it started a cooling cycle. No big deal its just the liquid to gas transfer. As time went on it got louder but would stop in a minute or two. Had to have the water valve changed for the 4th time, which is another matter. Now here is what is strange, after moving the fridge out and jostling it around a bit to get to the valve putting back into place, the noise had stopped. Now this is not the 1st time this has been moved about. A couple of days later it started to come back again. I was in the kitchen when it started. I grabbed the top of the unit and shook it a bit. The noise stopped and has not come back again. So was something out of balance or not in place that was causing this. I had come to just live with the noise thinking it was just a quirk of the unit. The freezer seem to be a lot more even in temperature, there was some time that items on the floor of the freezer would not get solid. What is/was going on. Never heard of this before.
Jon
Jon