Motor non-overcurrent control device of boiler frequency conversion fan and boiler system

The utility model relates to a motor non-overcurrent control device of a boiler frequency conversion fan and a boiler system, the device comprises a fault output loop, the fault output loop is connected with a frequency converter, and the fault output loop is used for outputting a fault signal when the frequency converter fails; and the control system is connected to the output end of the fault output loop, and the control system is used for controlling an air door of the fan to be closed to a set value when receiving the fault signal output by the fault output loop. When the frequency converter breaks down and stops running, the fault output loop outputs a fault signal to the control system, and when the control system receives the fault signal sent by the fault output loop, the control system controls the air door of the fan to be closed to a set value, so that the fan can be prevented from being damaged when the frequency converter is in fault-to-power-frequency running. The problem of overcurrent tripping