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Falcon Gas hotplate will not light or will not simmerwhat to check

Get it checkedRange cookerLast updated

Two Falcon-specific answers: the low flame position is past high rather than between high and off, and the control knob has to be held in for about ten seconds.

Take care

Some of this is safe to check yourself, but the repair itself is not. If the fault comes back after one reset, stop resetting it and get a qualified appliance engineer to look at the Falcon properly.

What exactly is the burner doing?

The right answer depends on what you can see. Pick the one that matches.

Choose the option on the left that matches what your appliance is doing, and the answer for that case appears here.

What exactly is the burner doing?

Falcon’s own description fits this precisely: the flame supervision device has not been bypassed, because it has not had long enough in the flame.

Turn the knob to off, wait one minute, and relight holding the knob in for longer than ten seconds.

What exactly is the burner doing?

Almost certainly the control layout rather than the burner. Low is past high on these cookers, so the gentle setting is in the opposite direction from the one that feels natural.

Keep turning past the large flame symbol instead of back towards off, and take out any simmering mat, which Falcon do not recommend.

What exactly is the burner doing?

The published waits and holds have been exhausted, so this is no longer the designed behaviour but a fault in the supervision device or the valve it operates.

Stop trying to relight it, turn that burner off and book a Gas Safe registered engineer. Repeated attempts are not a diagnostic step.

What this means

The Falcon dual fuel guides contain no error codes at all, and in their place they publish the clearest hotplate instructions in this category. Two of them account for most of the complaints. The first is a control layout that catches almost everybody. On these cookers the low position is beyond high, not between high and off, so an owner turning the knob back down towards off in search of a gentle flame runs out of travel and concludes the cooker cannot simmer. It can. Keep turning in the same direction past the large flame symbol and the burner drops to its lowest setting. That single sentence answers a large share of the range cooker simmering complaints on the internet, and it is printed in the manufacturer’s own book. The second is the flame supervision device, and Falcon describe it in terms of what you have to do rather than what it is. Push the knob in, turn it to high, and the igniter should spark and light the gas.

Then keep holding the knob pressed in for about ten seconds to let gas through to the burner. If the burner goes out when you let go, Falcon’s wording is that the device has not been bypassed: turn the knob to off, wait one minute, and try again holding the knob in slightly longer. The same one-minute wait applies whenever a burner flame goes out on its own. Two things in the same passage are worth knowing because they look alarming and are not. When any hotplate knob is pressed in, sparks are made at every burner, and Falcon publish that as normal rather than as a fault in the ignition. And there is a real warning attached: do not attempt to disassemble or clean around any burner while another burner is on, because an electric shock could result.

Falcon also publish the numbers for what goes on top. The minimum recommended pan diameter is 160 mm and the maximum allowable pan base diameter is 260 mm, and simmering aids such as asbestos or mesh mats are not recommended because they reduce burner performance and could damage the pan supports — which is worth reading alongside the low-beyond-high point, because a mat is what people reach for when they think their cooker cannot go low enough. If a burner still will not hold after two properly timed attempts on a clean, correctly assembled burner, the wait has stopped being the answer and the flame supervision device or its valve needs a Gas Safe registered engineer.

What causes it

Causes of Falcon Gas hotplate will not light or will not simmer, most common first
CauseWhat is actually happeningHow likely
The knob released before the device was satisfiedFalcon publish about ten seconds of holding after the burner lights, and letting go early is what their own text describes as the device not having been bypassed.Common
Looking for the simmer setting in the wrong directionOn these cookers low lies beyond high rather than between high and off, so turning back towards off finds nothing at all.Common
Relighting too soon after a flame-outThe published instruction is a full minute with the knob at off before another attempt, and hurrying it produces the same failure again.Common
A burner head put back out of position after cleaningFalcon’s own troubleshooting asks whether the burner heads are correctly located and whether the parts were replaced correctly after wiping or removing for cleaning.Occasional
A blocked igniter or burner holesFalcon ask whether the sparker or the burner holes are blocked by debris, and whether the burners spark at all when the knob is pushed in — if not, check the power is on.Occasional
No gas reaching the cookerFalcon’s published test is to check that other gas appliances in the house are working before assuming the cooker is at fault.Occasional
A simmering mat masking the real settingFalcon do not recommend them, warning that they reduce burner performance and could damage the pan supports.Occasional
A failed flame supervision device or gas valveWhere it ends up when a clean, correctly assembled burner refuses to stay lit after two properly timed attempts.Occasional

What to try yourself

  1. Push the control knob in and turn it to the high position marked by the large flame symbol, and let the igniter spark.

  2. Keep the knob pressed in for about ten seconds after the burner lights. That is Falcon’s own figure and it is the step people skip.

  3. If the flame dies when you release the knob, turn it to off, wait a full minute, then try again and hold slightly longer.

  4. Expect sparks at every burner while you hold any knob in. Falcon publish that as normal, not as an ignition fault.

  5. For a low flame, keep turning the knob in the same direction past high rather than easing it back towards off.

  6. Use a pan between 160 mm and 260 mm across the base, and take the simmering mat out from under it.

  7. If no burner sparks at all, check the power is on. If they spark and none will light, check another gas appliance in the house is working, and check the burner heads went back on correctly after cleaning and nothing is blocking the igniter or the burner holes.

  8. If a clean, correctly assembled burner still will not hold after two properly timed attempts, stop and book a Gas Safe registered engineer.

    Never clean or dismantle around one burner while another is lit — Falcon warn that an electric shock could result from the igniter. If you can smell gas, follow the list Falcon print: do not turn electric switches on or off, do not smoke or use naked flames, turn off the gas at the meter or cylinder, open doors and windows, keep people away, and ring the National Gas Emergency Service on 0800 111 999, or 0800 002 001 in Northern Ireland.

Get a qualified appliance engineer to look at your Falcon range cooker

We do not pass enquiries to a repair firm, so there is no form here. When you book a qualified appliance engineer, tell them the make, the model and the exact code or message on the display, and ask whether they carry parts for this make — that is what turns one visit into a repair rather than a quote.

What it costs to fix

Typical repair cost

£0–£200

Time on site

15 minutes

Nothing at all if the answer is technique, which for the simmer complaint it almost always is. A Gas Safe registered engineer’s visit plus a flame supervision device or thermocouple if a clean, correctly assembled burner still will not hold.

Typical UK prices including parts and labour, updated September 2026. Your quote may differ.

Own this appliance and had this code? . Nothing is published until a person has read it.

Common questions

Why do all the burners spark when I only press one knob?

Because that is how the ignition is wired, and Falcon publish it as normal. Pressing any hotplate control knob in makes sparks at every burner. It sounds and looks like a fault the first time and it is simply the igniter circuit doing its job.

Why will my Falcon not simmer?

Nine times out of ten because the low setting is not where you are looking for it. Falcon print that on this cooker the low position is beyond high, not between high and off. Keep turning in the same direction past the large flame symbol and the burner will drop right down.

Can I use a simmer mat to get a gentler heat?

Falcon advise against it. Their wording is that simmering aids such as asbestos or mesh mats are not recommended, because they reduce burner performance and could damage the pan supports. If you needed one to get a low flame, the low-beyond-high point is worth trying first.

Is there a fault code for the gas side?

No. The Falcon Deluxe 1000 Dual Fuel guide was read in full and contains no error codes at all — no E-codes, no U400, nothing numeric. The codes on this brand live on the induction hob and nowhere else, which is the same pattern every manufacturer in this category follows.

What size pan should I use on the hotplates?

Falcon publish a minimum recommended pan diameter of 160 mm and a maximum allowable pan base diameter of 260 mm. Something smaller than the minimum lets flame up the sides of the pan, and something larger than the maximum sits badly on the supports and traps heat against the fascia.

Written by

Andrew Pickett

Researcher and writer

Last updated

Technical review

Not reviewed by an engineer

No engineer has read this page. Severity follows what the manufacturer publishes, and we would rather tell you that than let a byline imply a sign-off.

What we check instead

Sources and how we verified this

We establish the facts from the sources below and then write the explanation ourselves. We do not copy manufacturer wording and we do not host their manuals.

  • Manufacturer technical and service documentation
  • Trade body guidance

This page has not been reviewed by an engineer, and we would rather tell you that than imply otherwise. The severity rating follows what the manufacturer publishes: where they say isolate the appliance and call someone, so do we.

Read our full verification process

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