How to Fix / Troubleshooting

Safety: Unplug the unit. Do not run it for long with grinding noises; this can cause motor failure.

Steps:

Access fan assembly: Remove front grille and rear cover to expose the fan motor and blower wheel.
Debris removal: Inspect for foreign objects (plastic, insulation, wiring) contacting the blower. Remove any obstructions.
Check alignment: Ensure the blower wheel is centered in its housing and not rubbing. Adjust its position on the motor shaft if needed.
Spin test: Rotate the blower by hand. If it feels rough or squeals, the motor bearings are likely worn.
Replace motor: Install an Insignia-compatible fan motor assembly if bearings are noisy or seized.

Note: Lubricating sealed fan motors is usually not effective long-term; replacement is preferred.

Dehumidifier emits a high-pitched squealing or grinding noise

Possible Causes