Patent attributes
Disclosed is a cooking appliance. The present invention includes a plurality of loads connected in parallel with each other, a plurality of load relays configured to be connected in series to a plurality of the loads in order to selectively supply commercial electricity supplied from a power supply unit to a plurality of the loads, respectively and be driven selectively in ON or OFF state, a safety relay configured to be connected in series to a plurality of the loads and be driven selectively in ON or OFF state, a detecting unit configured to sense a voltage applied to both ends of the safety relay by being connected to the safety relay, and a controller configured to control a plurality of the load relays, the safety relay and the detecting unit and determine a presence or non-presence of malfunction of a plurality of the load relays based on a signal from the detecting unit.
