| 摘要 |
There is provided a power system (100) including a controller (102), a combustion apparatus (103), and a discharge passage (70) which causes a housing (12) and an air outlet of the combustion apparatus (103) to communicate with each other. The power system (100) further includes an air discharger for discharging air inside a fuel cell system (101) into the discharge passage (70), a reverse flow prevention device (21) that is disposed in the discharge passage (70) or a ventilation passage (75), and a combustible gas detection sensor (20) that detects combustible gas present inside the housing (12). The controller (102) operates the air discharger, while the air discharger is stopped and when the combustible gas detection sensor (20) continuously detects the combustible gas having first concentration or higher concentration during a first period of time, or in every predetermined period. In a state where the air discharger is operated, the controller (102) determines that the power system (100) is abnormal, or gives a notification of the abnormality and when the combustible gas detection sensor (20) continuously detects the combustible gas having second concentration or higher concentration during a second period of time. |
