FUEL CELL DEVICE

A fuel cell system includes a fuel cell (11) that generates electricity using a fuel gas and air, an air supply (13) that supplies air to the fuel cell (11), a temperature meter (TC) that measures a temperature of the fuel cell (11), and a controller (30). The controller (30) controls the air supply (13) to increase an amount of air to be supplied to the fuel cell (11) in response to the temperature of the fuel cell (11) exceeding one of a plurality of predetermined temperatures.