Range hood loud, rattling or vibrating
Separate airflow noise (rushing, whistling) from mechanical noise (rattle, grind, wobble). Airflow noise usually comes from a restricted or undersized duct, a stuck damper or dirty filters. Mechanical noise comes from a loose part, a debris-hit or unbalanced fan wheel, or worn motor bearings.
Before you start
- Power off before reaching near the fan wheel or removing covers
- Wear gloves against sharp edges
Diagnostic steps
Unlock all 6 steps with expected values
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