I have the same problem. I won't put any money into this as mine is 8 yrs old. I unplug the fridge and take out all the shelves. I take a hair dryer to the back panel and unscrew it. remove carefully the panel to the side and use hairdryer to melt the ice. Put it back and wait for the next time the fan makes noise. Sometimes it can be a month or two others 3 weeks. Cheaper than a new fridge for now.