Cooker Hood Not Working in Dartford - Common Faults and What to Do

Published July 2026 | Appliance Repair

In the First 10 Minutes

A cooker hood that stops working - whether the fan cuts out mid-cook, the lights fail, or the whole unit goes dead - can feel alarming. In most cases it's not dangerous, but a few quick checks will tell you what you're dealing with before anything else.

First, switch the hood off at the wall socket or isolation switch. If your hood is hardwired into the kitchen - common with chimney-style and built-in models - turn it off at the fuse spur or consumer unit. Don't keep pressing buttons on a unit that's misbehaving. You risk making the fault worse or tripping the circuit entirely.

Then work through these checks in order:

1. Test the socket or spur with another appliance to confirm power is reaching the unit.
2. Check your consumer unit for a tripped MCB (miniature circuit breaker). A motor surge can trip one, especially on older installations.
3. If your hood is plug-in, inspect the fuse in the plug. Most cooker hoods use a 3A or 5A fuse.
4. Pull out the grease filters and look at them. If they're matted solid with grey grease, the motor may have overheated and cut out via its thermal protection switch.

If restoring power brings the hood back on, don't assume you've fixed it. A thermal cutout is a warning sign, not a fix. The motor shut itself down because it was running too hot. Clean or replace those filters before you switch it on again.

Within the First Hour

Once you've ruled out the immediate causes, it's time to work out the actual fault. Our engineers see a handful of problems come up again and again in Dartford kitchens, so it's worth going through them methodically before calling anyone out.

Total power loss: The unit does nothing at all - no lights, no fan, no display. This typically points to a blown fuse, a tripped breaker, or a failed control board. On units from Bosch, Neff, and AEG, a failed PCB is a known weak point once the appliance gets past seven or eight years of use.

Fan runs but no suction: You can hear the motor spinning, but air isn't moving. This is almost always a severely blocked grease filter or a disconnected duct. Pull the filters and check. If they're caked solid, that's almost certainly the cause.

Fan works but lights don't: Check the bulb first. Many models from Hotpoint and Beko use T8 halogen capsule bulbs or small E14 LED lamps that fail with age. If a new bulb doesn't fix it, the fault is likely in the light circuit on the control board.

Motor hums but won't spin: This is a classic capacitor failure. The capacitor gives the motor the initial torque it needs to start rotating. It degrades predictably over time and is one of the more common faults our engineers repair.

Grinding or rattling noise before the fault: A fan blade clogged with hardened grease can cause vibration and eventually seize the motor. With the power isolated, remove the filters and use a torch to inspect the fan blades if you can do so without reaching inside the unit.

If you're not sure which fault you're dealing with, the Voltrade GoFIX diagnostic tool lets you describe your symptoms and get a clearer picture of likely causes and repair costs before you commit to a call-out.

Same Day

Getting the right help lined up quickly matters, particularly if you cook daily. A cooker hood isn't just about clearing cooking smells - it pulls moisture, grease particles, and combustion by-products out of the kitchen air. Running a gas hob without working extraction isn't something you want to do for long.

Here's what to do before the end of the day:

1. Find the model label. It's usually on the inside panel of the hood, behind the grease filters, or on the underside of the unit. Note the model number and serial number - you'll need both when booking a repair.
2. Check your warranty. Bosch, Neff, Siemens, and AEG typically cover two years from purchase, sometimes extended to five with product registration. Hotpoint and Beko terms vary by model. If your hood is within warranty, contact the manufacturer before booking a private engineer.
3. Don't dismantle the unit. Even plug-in cooker hoods involve mains wiring internally. Attempting a DIY repair without the right knowledge can make the fault more expensive to fix - and potentially dangerous.
4. Book a local appliance repair engineer. For Dartford homeowners, same-day or next-morning appointments are usually possible. Ask whether the engineer carries common spare parts for your brand before booking - it can save you waiting for a second visit.

In terms of cost, most common cooker hood repairs in the UK currently sit between 80 and 200 pounds including parts and labour. A capacitor replacement typically comes in at the lower end of that range. Replacing a control board or PCB on a higher-end Bosch or Neff model can push up to 200 to 300 pounds. If the total repair cost is going to exceed around 60% of what a new equivalent hood costs, our engineers will tell you honestly - at that point, replacement often makes more financial sense.

The Repair Visit

Here's what to expect when an appliance engineer arrives at your home in Dartford.

The engineer will start by isolating power to the unit and running through a systematic diagnosis - checking the filters, testing for voltage at the connection point, and using a multimeter to test the motor windings, capacitor, and control board. This typically takes 15 to 30 minutes and gives a clear picture of what needs replacing.

Common repairs and typical timescales on site:

• Grease filter replacement or deep clean: 15 to 20 minutes
• Capacitor replacement: 30 to 45 minutes, usually accessible once the filter housing is removed
• Bulb or lamp module replacement: 20 to 30 minutes - many hoods use proprietary lamp units specific to the model
• Control board replacement: 45 to 90 minutes, subject to parts availability
• Motor assembly replacement: 60 to 120 minutes, often requiring a return visit if the part needs ordering
• Ducting inspection and reconnection: 30 to 60 minutes depending on access - more involved in older Kent properties with rigid duct runs through walls or ceiling voids

Prepare before the engineer arrives:

• Clear the worktop beneath the hood to give proper access
• Have the model number and serial number ready
• Note when the fault started and any symptoms you noticed beforehand - noise, intermittent cutting out, or any burning smell

A burning smell before the hood stopped working is worth flagging immediately. It can indicate motor winding failure or, less commonly, an electrical fault in the wiring. Your engineer will want to know about it before starting work.

The Following Week

Once your cooker hood is back in action, a few checks in the days after the repair will confirm everything is running correctly.

Run the hood through each fan speed and listen carefully. A successful motor or fan repair should produce smooth, consistent operation on all settings. Any grinding, vibration, or rattling that wasn't present before the fault started should be reported to the engineer promptly.

Test the extraction performance. Hold a sheet of kitchen roll close to the grease filter with the fan running on high - it should be pulled firmly towards the filter. If suction feels weak on a recirculating model (one that doesn't vent externally), check whether the carbon filter was replaced as part of the service. A saturated carbon filter can reduce airflow noticeably even with a healthy motor.

Check the lights work across all settings, including any dimmer function if your hood has one. Repairs that involve the control board can occasionally affect secondary circuits.

For Dartford homeowners with an older hood - say, more than ten years old - this is also a good time to think realistically about its remaining lifespan. If the repair has bought you another two or three years on an older Hotpoint or Beko unit, that's decent value. But if you're already on your second or third repair for the same appliance, start budgeting for a replacement. Continuing to repair an ageing unit rarely works out cheaper than replacing it.

Long Term

The single most effective thing you can do to extend the life of a cooker hood is clean the grease filters regularly. Blocked filters are the leading cause of motor failures, thermal cutouts, and premature component wear across every brand and price point. It's not a complicated fix - it's just something most people put off for too long.

A maintenance schedule that works:

1. Every four to six weeks: Remove and clean the metal mesh grease filters. Most are dishwasher-safe, or soak them in hot water with a kitchen degreaser for 20 to 30 minutes. If your household does a lot of frying or wok cooking, do this monthly.
2. Every six to twelve months: Replace the carbon filter if you have a recirculating model. These cannot be washed - they must be replaced. Check your hood's manual for the correct part number. Using a generic replacement that doesn't fit properly is a common mistake.
3. Annually: Inspect the ducting if your hood vents externally. Grease accumulates in duct bends over time and restricts airflow significantly. In older Kent properties with long duct runs through walls or loft spaces, this is particularly worth checking.
4. Every two to three years: Have the motor and electrical components inspected if the hood sees heavy daily use. Catching a failing capacitor early is far cheaper than replacing a burned-out motor.

Choosing a quality hood from brands like Bosch, AEG, Elica, or Neff will generally give you a more durable motor and better electronics than budget alternatives. That said, even well-built appliances need consistent maintenance to run reliably for ten or more years. No appliance looks after itself.

Timeline Questions

How long does it typically take to repair a cooker hood that won't turn on?

Most cooker hood repairs in Dartford take between 45 minutes and two hours on site, depending on the fault. A capacitor replacement or fuse issue sits at the quicker end. Control board or motor replacements may require ordering parts in advance, which can add one to two days before the engineer returns. When you book, ask whether the engineer has checked parts availability for your specific model - it can save you a second visit wait.

Is it worth repairing a cooker hood or better to replace it?

Our engineers use a rough guide: if the repair cost comes to more than 60% of what a comparable new hood costs, replacement usually makes more sense financially. For hoods under five years old, or for higher-spec models from Bosch, Neff, or AEG, repair is typically good value. For budget units over eight years old, a replacement in the 100 to 300 pound range often works out cheaper than repeated repairs over the following years.

Why does my cooker hood keep cutting out after a few minutes?

Intermittent cut-outs are most commonly caused by a blocked grease filter triggering the thermal overload protection, which shuts the motor down before it overheats. A failing motor capacitor is another common cause - it can't maintain consistent running under load. In some models, a faulty control board causes random shutdowns without warning. Start by cleaning or replacing the grease filters. If the problem continues, book a diagnostic with a qualified appliance repair engineer in Kent.

Can I clean my cooker hood grease filters at home?

Yes - metal mesh grease filters are designed to be removed and cleaned at home. Most are dishwasher-safe on a hot programme, or you can soak them in hot water with washing-up liquid or a kitchen degreaser for 20 to 30 minutes, then rinse thoroughly. Carbon filters, used in recirculating hoods, are different - they cannot be washed and must be replaced. Check your hood's manual to confirm which type you have and what replacement interval is recommended for your usage level.