There are multiple key components inside the motor of the electric rolling shutter door, such as the motor rotor, stator, capacitor, etc. If any of these components are damaged, it may cause the electric rolling shutter door motor to sound and not rotate. At this point, it is necessary to replace or repair the faulty component.
Repair method:
1. Check the motor rotor: If the motor rotor is damaged, a multimeter can be used for measurement. If there are multiple two connection points in the rotor winding that are close or short circuited, the motor rotor needs to be replaced.
2. Check the stator winding: If the stator winding of the electric rolling shutter door motor is damaged, it will be manifested as no response or slow rotation speed of the motor rotor. At this time, winding repair or stator replacement can be used for repair.
3. Check the capacitor: If the capacitor is damaged, it will cause the motor speed to slow down or not turn. At this point, it is necessary to replace the capacitor with a new one.