What needs separating?
A fan that can be heard is not proof of effective extraction. Explain the airflow result as well as the sound, and tell us about any known filter or duct arrangement.
For “the hood makes a new vibration”, potential assessment areas include a fan component, fixing or obstruction. The product and an inspection determine which explanation, if any, fits.
A short record of this change
Note whether the sound changes with the chosen speed. Include the setting and the first stage that differed from normal operation, without assuming why it happened.
Whether the lights and fan operate separately
The speed at which the change is noticeable
Airflow, noise, vibration or dripping observed
Identity before interpretation
Use a visible identity label during normal user access only. A canopy design or kitchen brand may not identify the extractor motor or control version.
Access without dismantling
State the height, whether the hood recirculates or vents outside if known, and any restriction around the canopy. Do not climb or dismantle ducting for a photograph.
Find the badge on your appliance
Keep an unsafe appliance out of use
Repeated restarting is not a diagnostic method. Leave covers fitted and stop for smoke, burning, sparking, water near electrical parts, severe overheating or repeated tripping.
Bring the details together
Complete only what you know. The notes remain in this page until you copy them; opening the booking service does not send these notes automatically.