1. CHECK IF THE BATTERY IS FULLY CHARGED. IF THE BATTERY VOLTAGE IS LOWER THAN 22V, THE MACHINE WILL NOT WORK PROPERLY. PLEASE CHARGE IT IN TIME.

2. CHECK IF THE LCD INDICATES FAULT CODE “BRUSH ERR”. IF THE FAULT CODE APPEARS, PLEASE CONTACT YOUR LOCAL DEALER OR THE MANUFACTURER DIRECTLY.

3. CHECK IF THE BRUSH MOTOR IS FAULTY. IF THE BRUSH MOTOR DOES NOT WORK PROPERLY AFTER POWER-ON, OR THE OUTPUT CURRENT IS TOO LARGE, PLEASE REPLACE THE BRUSH MOTOR.

4. CHECK IF THE BRUSH MOTOR POWER OUTPUT TERMINAL, WHICH CONNECTS THE INTEGRATED CONTROLLER, IS 24V. IF NOT, THE INTEGRATED CONTROLLER IS FAULTY, PLEASE REPLACE IT.