Range cooker Gas oven goes out after a minutewhat to check
A gas oven that lights and then shuts down within a minute is usually the flame supervision device, and three manufacturers publish the same sixty-second answer.
Take care
What happened just before it started doing this?
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 happened just before it started doing this?
This is the published interrupter behaviour almost exactly. The appliance needs a minute with the power on before the main oven will hold.
Wait a full sixty seconds with the power on, then light it again.
What happened just before it started doing this?
The safety device has tripped and shut off the gas, which is what it exists to do. It needs the control returned to off before it will reset.
Return the knob to off, wait at least sixty seconds, then relight. Do not try to relight against a tripped device.
What happened just before it started doing this?
That is no longer the designed behaviour. A flame supervision device that will not hold open once warmed is a genuine fault in the thermocouple or the valve.
Stop using the oven and book a Gas Safe registered engineer. This is not something to keep retrying.
What this means
This is the best documented gas-side behaviour in the whole category, and it has a published answer that almost nobody finds because it is buried in the manual rather than on a support page.
Belling state it plainly for their gas cookers: if the appliance has been turned off at the wall, it needs to be left for sixty seconds before you use the main oven, and if you do not wait, the main oven interrupter will shut the oven off within sixty seconds of you turning it on. Their conclusion is unambiguous — this is a design feature and not a fault. So a gas oven that lights, burns for the best part of a minute and then dies, immediately after the power has been off, is doing what it was built to do.
Smeg publish the same interval for a different but related situation. If a burner goes out accidentally, a safety device trips and cuts off the gas supply even with the gas tap open, and their instruction is to return the knob to off and wait at least sixty seconds before lighting it again. Falcon publish a sixty-second wait for relighting a burner too. Three independent manufacturers, one number, which is about as strong as cross-brand evidence gets in this category.
The mechanism underneath all of this is the flame supervision device. A thermocouple sits in the flame, warms up, generates a small voltage and holds a valve open. Take the flame away and the thermocouple cools within seconds, the voltage collapses and the valve shuts, which is the whole point — it is what stops a gas oven quietly filling a kitchen when a flame blows out. The behaviour people report as a fault is that same device refusing to hold open before it has warmed through.
If waiting does not solve it and the oven consistently dies after every attempt, the thermocouple or the valve it controls has a genuine fault, and that is Gas Safe work rather than something to keep retrying.
What causes it
| Cause | What is actually happening | How likely |
|---|---|---|
| The oven interrupter after the power has been off | Belling publish this specifically: turn the appliance off at the wall and you must leave it a full sixty seconds before using the main oven, or the interrupter will shut the oven down within a minute of lighting. | Common |
| The knob released too early after lighting | The thermocouple needs several seconds in the flame to generate enough voltage to hold the valve open. Let go before it has warmed and the valve closes and the flame goes out, which reads exactly like a fault. | Common |
| A safety device tripped by an accidental flame-out | Smeg publish that an accidental switch-off trips a device that cuts the gas even with the tap open, and that the knob must be returned to off and left at least sixty seconds before relighting. | Occasional |
| A failing thermocouple or flame supervision valve | The genuine fault behind this symptom. It presents as an oven that will not stay lit no matter how long you hold the knob or how long you wait between attempts. | Occasional |
What to try yourself
Turn the oven control to off and leave it alone for a full sixty seconds. Time it rather than estimating it, because the wait is the fix and thirty seconds is not enough.
If you can smell gas at any point, stop. Do not operate any electrical switch, including turning something off. Leave the property and ring the national gas emergency line from outside.Light it again following the manufacturer instruction for your cooker, and hold the control in for the full period the manual specifies before releasing it.
If the cooker has been switched off at the wall recently, make sure the power has been back on for at least a minute before you try the main oven at all.
If it dies again after two properly timed attempts, stop trying. Repeatedly lighting a gas appliance that will not hold is not a diagnostic step, and the fault at that point needs a Gas Safe registered engineer.
Get a qualified appliance engineer to look at your 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–£160
Time on site
5 minutes
Nothing at all if it is the interrupter and the fix is waiting a minute. A thermocouple replacement by a Gas Safe registered engineer is the usual cost if it turns out to be genuine.
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.
Related range cooker fault codes
- Oven will not turn onUsually simple to fixOn most range cookers the ovens will not heat until the clock has been set, and the timer has to be in manual mode. Three manufacturers publish this themselves.Related: same brand
- HUsually simple to fixH on a zone display means the glass above it is still hot enough to burn you. It is a warning rather than a fault, and every brand sets its threshold differently.Related: same brand
- Cooling fan runs on after cookingUsually simple to fixA range cooker fan that keeps running for up to an hour after cooking is designed behaviour, and the maker of Stoves and Belling tells you not to switch the cooker off to stop it.Related: same brand
- U400Get it checkedA 400-family code means the cooker has been connected to the wrong supply or wired incorrectly. Five badges from four manufacturers publish a version of it, and it appears at installation.Related: same brand
- How to isolate a range cookerUsually simple to fixAn electric or dual fuel range cooker has no plug: five manufacturers describe a wall switch near but not above the cooker on a 30 or 32 amp circuit. All-gas ranges are the exception.Related: same brand
Related guides
Common questions
Why sixty seconds specifically?
None of the three manufacturers explain the number, they simply publish it. What we can say is that Belling, Smeg and Falcon all arrived at the same figure independently for flame-failure situations on gas cooking appliances, which makes it a good deal more than a rule of thumb.
Is it dangerous while it is doing this?
The device shutting the oven down is the safe outcome, not the dangerous one — it is closing the gas rather than letting it flow to an unlit burner. What is not safe is defeating it by repeatedly relighting, or leaving a gas appliance that behaves unpredictably in service while you get used to it.
Can I replace the thermocouple myself?
No. Work on the gas side of a cooker is legally restricted in Great Britain to Gas Safe registered engineers, and that covers the thermocouple and the valve it operates. Waiting sixty seconds is yours; anything behind the panel is not.
Does the same thing apply to the hob burners?
The same mechanism does, and Smeg publish the sixty-second wait in the context of a burner rather than an oven. The other common hob complaint, clicking without lighting, is usually a different thing entirely. Smeg publish that the flame-spreader crowns must be seated correctly in their housings with their holes aligned to the igniters and thermocouples, that the igniters and thermocouples must always be perfectly clean, and that washed crowns and caps must be perfectly dry before they go back on — which between them describe the damp or dirty burner that clicks without catching.
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.
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
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.