COMBUSTION DEVICE

PROBLEM TO BE SOLVED: To provide a combustion device capable of properly depicting the multifunction of a valve for switching performance without deteriorating the using feeling of a user during combustion operation.SOLUTION: A combustion device 1 has two combustion systems constituted by making proportional valves 43 and a plurality of solenoid valves 44 arranged at the downstream side of the proportional valve 43 one set and has a malfunction detecting function capable of detecting malfunctions of the solenoid valves 44 at each system. In malfunction detecting operation, control for closing the solenoid valves 44 is carried out with the proportional valves 43 belonging to the combustion system of the side where the combustion is stopped closed when stopping any combustion system from a state that at least two combustion systems is in combustion at the same time, the presence or absence of a signal of an ember at that time is detected, and it is determined that an opening/closing valve belonging to the combustion system is out of order when the signal of the ember is perceived.