1. When storage water tank is lack of water, whole machine is only in standby state, and buzzer will alarm.

2. When boiler water level is very low or high, feed machine doesn't work, and buzzer will alarm.

3. When the body surface temperature reaches 150°C, the boiler stops running, and buzzer will alarm.

4. If power is lack of phase and voltage, induced draft fan (feeder) stop, the converter will display the corresponding fault code.

5. If the storage bin connects with the boiler body loosely, boiler will stop running and buzzer will alarm.

6. If power failure or induced draft fan fault, fire door opens automatically.

7. When steam pressure reached to 0.2Mpa due to other reasons, relief valve opens and releases pressure automatically.

8. When the fuel in the bin reduces to the lower limit, sound- light alarm, but it will not affect other programs.