The fire was automatically extinguished due to tilting of the main unit or strong vibration or shock.
The fire was extinguished due to an earthquake (intensity 5 or higher).
「Remedy」
Check to make sure the stove is not tilted, and then relight the heater.
If the stove was activated by an earthquake, make sure there are no combustibles in the vicinity, damage to the heater, leaks, or other abnormalities, and then relight the heater.