Beta-lactamase-producing bacteria (BLPB) may have an important clinical role in infections. These organisms can be pathogenic in causing the infection as well as have an indirect effect through their ability to produce the enzyme BL into their environment.
If you turn the dial to number 0, that effectively turns the fridge off. Setting the dial to 9, the refrigerator will be working at its max capability. Your personal temperature setting will depend on how much food is kept in the refrigerator. If your fridge is packed with food, it needs to be on a higher number setting to maintain a low (colder) temperature. The temperature controller dial or slider on your refrigerator is a thermostat. It kicks the compressor on when the refrigerator is not cold enough.
First, rule out that the water inlet valve Part Number: WR57X10032. (the one in the back of the refrigerator, behind the service panel) is the problem. The water inlet valve is located at the lower left in the rear, it has a blue side and a red side. Next, test the voltage to the blue side; should get 120 volts when water on door is activated.