SOLID ELECTROLYTE FUEL CELL

The present invention comprises fuel cells 84 disposed within a fuel cell module 2; a reformer 20, a reformer temperature sensor 148 for detecting the temperature of the reformer; and a control section 110 for controlling the operation of a fuel cell module. When a restart of operation is executed in a state whereby stopping of the operation of the fuel cell module is being executed, the normal startup POX is skipped and restart by the ATR is executed, at least within a high temperature region within the POX temperature band, even if the reforming state temperature (Tr, Ts) is within the normal startup POX temperature band W2.