Combustion device

摘要

A combustion of the present invention has a burner, a combustion fan supplying air to the burner, revolution rate detection means for detecting a revolution rate of the fan, and an air-flow rate sensor for detecting an air-flow rate of the air. The combustion device further has a temperature sensor for detecting a temperature at the combustion device and diagnosis means for performing a self-diagnosis to determine a ventilation condition based on a relationship between the revolution rate and the air-flow rate. The diagnostic means correct the detected revolution rate or the air-flow rate based on the temperature of the combustion device in the process of performing the self-diagnosis. The diagnosis means perform the self-diagnosis after a predetermined time has passed until there is no temperature variance in the combustion device since a combustion halts.