I replaced the entire control module. This was fairly straight forward with the directions that came with the module. Basically "plug and play". The control module has about 7 instrument wiring connections or plugs. Each plug is unique, so there is no way to screw this up. Just make sure that you reconnect all connections. It took me about an hour start to finish. The refrigerator is working properly now and I don't have to buy a new one!