How to Fix / Troubleshooting

Safety first: Remove the battery before opening the main body. Do not touch the motor immediately after use; it may be hot.

Confirm noise source: Remove the wand and floorhead and run the vacuum briefly. If the screeching persists from the main body, the motor is the likely source.
Check for blockages: Ensure there are no obstructions in the motor inlet or outlet that could be contacting the fan.
Open the housing (advanced): Remove screws and carefully separate the main body housing to access the motor assembly. Inspect for dust buildup around the motor and fan.
Inspect motor: Spin the motor fan by hand. If it feels rough, wobbly, or makes grinding noises, the bearings are worn.
Replace motor assembly: Replace the complete main motor assembly with a Bush-compatible unit. Reassemble the housing, ensuring all seals are correctly positioned.

Cordless vacuum makes a loud screeching or squealing noise from the main body when running.

Possible Causes