Technology has added flavors of luxury and convenience in our daily life. Advancement in the mean of transportation and Appliances are some of the things from that list. Sticking to appliances there are many handy pieces of machinery that assist us in our daily routine tasks. They have minimized our efforts and save time. In a list of useful machinery, refrigerator comes on top as it the most accustomed appliance in a household. It is a basic rule that when you are getting a service than in return you also have to pay something. Maintenance is the thing that is due on your side in order to maintain efficiency and extended lifespan of appliance. Sub Zero Refrigerator has been evolved through technology in past decades. There might be some problems as it is a machinery and it might betray you. We have summed up some DIY thing for your Refrigerator but if it is not fixed then you might get help from professional appliance technician.