Question 1

What does the F symbol mean on my extractor?

Accepted Answer

The F symbol usually indicates that the grease or charcoal filter needs cleaning or replacing, depending on your cooker hood model.

Question 2

How do I reset the filter light on Bosch/NEFF/Siemens?

Accepted Answer

Press and hold the filter reset button (often marked "F" or the timer icon) for a few seconds until the light goes off. Check your manual for the exact button combination.

Question 3

How often should I replace a charcoal filter?

Accepted Answer

Charcoal filters typically need replacing every 3–6 months, depending on how often you use your cooker hood.

Question 4

Why is my hood still noisy after cleaning?

Accepted Answer

A hood may remain noisy if the fan motor is worn, the ducting is too narrow, or there is a blockage restricting airflow.

Question 5

Can I run a hood without a duct?

Accepted Answer

Yes. You can use a recirculating hood without external ducting, but it must have a charcoal filter to remove odours effectively.

Question 6

What is Hob2Hood and will it work with any hob?

Accepted Answer

Hob2Hood is a wireless technology that allows compatible hobs to control the hood’s fan and lights automatically. It only works with matching brands and compatible models.

Question 7

What duct size is best: 125mm vs 150mm?

Accepted Answer

A 150mm duct is generally better as it reduces noise and improves airflow efficiency compared to a smaller 125mm duct.

Question 8

Why does my hood drip condensation?

Accepted Answer

Condensation drips can occur if the ducting is too long, poorly insulated, or if cold air meets warm, moist kitchen air inside the vent.

Question 9

Does child lock affect symbols?

Accepted Answer

Yes. When child lock is activated, it can disable buttons or make symbols flash, preventing any settings from being changed.

Question 10

When should I book a repair instead of DIY?

Accepted Answer

Book a professional repair if cleaning, filter changes, or resets don’t solve the issue—especially for electrical, motor, or control panel faults.

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