Gas hob - one burner does not light

[Sanjay29]

Attached are photos of the Bosch hob.
4 side burners work perfectly.
Centre one ignites I hear gas ( I think) but does not light. Any ideas. Thanks

 

[CBW]

Centre one ignites I hear gas ( I think) but does not light. Any ideas. Thanks

It can’t ignite and not light. Does it spark? Can you light it with a lighter/matchstick?

 

[Sanjay29]

It sparks definitely.
Does not ignite

 

[ianmcd]

its a cleaner you need not a gas engineer

 

[Sanjay29]

Thanks. Can you be more specific

 

[Alec_t]

Does not ignite

If you can hear gas then it should light using a match. Does it?
Is there a hidden flame-sensor? I don't see one.

 

[Madrab]

Is there a hidden flame-sensor

TC - centre lower right

 

[Alec_t]

Ah yes. Didn't spot it from the top-down view.
In that case I'd suspect failure of the flame sensor thermocouple or the hold-on solenoid valve it energises.

 

[Harry Bloomfield]

Centre one ignites I hear gas ( I think) but does not light. Any ideas. Thanks

That is confused. You said it ignites, but does not light - it cannot be both.

Ignites is where the flame actually lights - is it doing that?

If it does that, is the flame going out when the button is released?

Is it not igniting at all?

If it is not igniting at all, can it be lit with a match and remain lit?

 

[Sanjay29]

Sorry I mean it sparks. I can hear the gas but does not light.

 

[Harry Bloomfield]

Sorry I mean it sparks. I can hear the gas but does not light.

If you can actually see a good spark at the hob, and hear the gas, then there is no gas appearing in the area of the spark to be ignited.

 

[Alec_t]

I can hear the gas

Can you also smell the gas at that particular burner?

 

[gas112]

Clear all the confusion up does it light with a match and then stay lit ?

 

[Sanjay29]

Yes Have just tried it. It lights with a match. Stays alight. When i put the cover on it does not light at all.

 

[Sanjay29]

In first attached picture i can get a flame in 3 places. Centre circle and the top and bottom shapes.