The detector false alarm, the detector fault alarm. Reasons: excessive humidity, excessive wind speed, excessive dust, mechanical vibration, too long use of detectors, and falling device parameters. Processing method: select the appropriate sensitivity detector according to the installation environment, when installation should avoid the air vent and the wind speed channel, check regularly, clean and replace the detector according to the condition. Manual button error alarm, manual button fault alarm. Cause: the button is too long to use, the parameter is down, or the button is artificially damaged. Processing methods: regular inspection, timely replacement of damage, so as not to affect the operation of the system.