I bought a Beko Fridge/Freezer about 3 months ago from Comet (yeah -- I know....but i was in a push!!). Since installation it's being making a pretty loud "chugging" noise when it's actively cooling itself. I've made sure the unit is level and I'm pretty much out of ideas. Is this noise common or is there an actual problem. I've never had one make that noise that loud, so I'm starting to think it maybe faulty. It cools itself fine -- just makes alot of racket to do so!