Motor steering error: the mechanical and electrical steering error of the air compressor is caused by the wrong connection of the motor, or the star / triangle can not be switched normally when the motor is started, or the steering signal sensor fault on the air compressor itself. Processing method: contact and check whether the sequence connecting lines of motors are correct.

Maintenance period: air compressor maintenance time due to write the date or beyond the maintenance period) (100 hours) treatment method: contact the maintenance of air compressor maintenance, after the completion of maintenance, the operator will reset the maintenance time.

Solenoid valve fault: the solenoid valve is loose or the lead connector is loose or broken. Treatment method: contact maintenance professionals for treatment.