La Cornue Hood Lights and Filters: Care, Replacement and Common Faults

Filters do more than catch grease

The filters in a La Cornue hood are the first line of defence for the blower, the ducting and the finishes around the range. As grease builds in them, airflow narrows, the blower works harder, noise rises and the hood draws less smoke. On a unit sitting above a hardworking gas range the effect is quick, so a regular routine matters more than an exact schedule. A good habit is to look at the filters whenever you notice the hood sounds different or the kitchen smells of cooking longer than usual.

Cleaning in sensible steps

1. Switch the hood off and let it cool fully.
2. Support the filter with one hand as you release it, because some are larger than they look and heavier when greasy.
3. Wash according to the care instructions for your hood, using warm soapy water and a soft brush. Avoid abrasive pads and harsh chemicals that can damage the finish.
4. Rinse and let the filter dry completely before refitting it.
5. Refit it firmly so it seats flat; a filter that sits loose can rattle or leave a gap that lets grease past.

Do not run the hood without filters, even briefly. Grease then goes straight into the blower and duct, and that is where repairs become larger.

Lights: what a fault usually means

Hood lighting looks simple, but the symptoms differ. Understanding the pattern saves a visit or confirms you need one.

• One light out, the rest on. Usually the lamp itself has reached the end of its life. Replace it only if you can reach it safely from below and only with the type fitted to your hood.
• All lights out together. Suspect the switch or control, the hood’s supply or a shared driver rather than several lamps failing at once.
• Flickering. A lamp that is loose or ageing, a poor connection, or a failing driver. If it flickers only when the fan starts, the electrical connection deserves a technician’s attention.
• Light stays on when switched off. A failing control or switch. Cut the power at the breaker if it will not turn off.
• Lights dim when the fan runs. A supply or connection issue that should be looked at soon.

Owner checks for lights

Confirm the hood is on a live circuit by checking the breaker and any wall switch. Try each light control separately from the fan control. Look at the lamps from below, and if one is clearly loose, switch off at the breaker, let it cool and reseat it by hand. Never touch a lamp that has just been on; it can be hot enough to burn. Do not take apart the light housing, and do not experiment with a different lamp type than the one fitted, since the wrong replacement can overheat the fixture or fail to fit properly.

What not to do

Do not use a wet cloth near the lamp sockets, spray cleaner onto the controls or hose down the filters while they are still in place. Do not jump or bypass a switch to bring the lights back. Do not take the hood apart for a deeper clean; internal grease needs a technician’s tools and care, and the finishes on a La Cornue hood scratch more easily than they appear. A burning smell, a buzzing light or visible scorching means switch off at the breaker and stop using the hood.

Where lights and filters meet the rest of the hood

Poor filters and failing lights sometimes point to the same underlying story. A hood that was never serviced and runs hot because its filters are clogged can age its lamps and drivers faster. A flickering light after a power cut or an electrical modification can suggest a supply issue that also affects the blower. If you see changes in both the lights and the airflow, mention both when you book. The posts on noisy or weak hoods and a fan that will not work cover those symptoms.

Know your hood before you order anything

Lamps, filters and controls are brand-specific. The CornuFé hood family includes the Euclid, Marquee, Cascade, Loge, CornuFé 90 hood and CornuFé 110 hood. The model and serial plate is usually behind the filters, and our guide on finding the model number helps if it is hard to spot. Ordering a lamp or filter without the full plate details often results in a part that fits badly or not at all.

When to book

Book when lights fail in groups, flicker, stay on or dim with the fan, or when filters are damaged, bent or will not seat. A technician examines the hood’s supply, control and lighting circuit, and tells you in writing what is needed before any repair starts. Nothing proceeds without your approval. Read about La Cornue range hood repair or look through the range hood lineup for the hood you own.

Filters on hoods above gas ranges

Above a powerful gas range, filters take a lot of grease and also catch fine particles that rise with the heat. After heavy cooking, such as searing or frying, filters load faster than usual, and the difference shows up in the sound and pull of the hood. If you entertain often or cook with a lot of oil, look at the filters more often than you would in a lightly used kitchen. Keep a note of when you last cleaned them, so you can tell whether a change in performance followed a cleaning or came before it.

Frequently asked questions