Completes magnetic field for proper functioning of the machine.
The magnet in the side pocket of the water tank must be working and in place before the unit will operate. If the magnet case becomes defective and allows water into the case, the magnet inside can demagnetize, an all of the lights will flash. The magnet will float when functional, which signals the unit that the water tank is not only there, but has ample water to make the coffee.
The replacement magnets are slightly smaller than the original, but have proven to work well.