Gas stove problem - why does it burn like this?

[leither69]

On 7/25/2019 at 12:41 AM, fredob43 said:

Post 6 is the one you should look at it shows a small tap to adjust the air mixture. On Thai set ups you will more than likely find the air control is a small leaver behind the tap. Just turn it one way and then the other and you'll find it will come back to life. Leave poking things in the holes alone, unless you have a blockage in one of them.

 

They have more than likely got turned off/down when the thing was cleaned. That's if it ever was. Whatever they can be turned down very easily.

 

Tip you can see the valve if you lift the front of the hob up. Once found put it back to normal position light up and twiddle with the valve.  

It's never been cleaned!!

[thaibeachlovers]

On ‎7‎/‎25‎/‎2019 at 12:55 AM, KittenKong said:

No, it's just crap from pans that have boiled over that has blocked the holes. I used to have gas stoves and I know the problem well.

 

Just lift the tops off, give them a good soak and then clear the jets with any convenient poking thing like a bit of wire. Nothing to it.

I used a drill bit of the same size as the hole. Scrapes the dirt off better than a piece of wire.

Not always dirt though. A very expensive stove never burnt right for me, even when brand new.

[whaleboneman]

It's dirty, ring is upside down, and air needs to be adjusted. You will have to buy a brand new house - it will come with a brand new cooktop.

[fredob43]

8 hours ago, leither69 said:

It's never been cleaned!!

It may have never been cleaned, but the OP problem is the GAS AIR mixture.

Had it happen several time on my set up when the Wife cleans the top it sit's on and has mover the leaver that adjusts the mixture with a cloth.

She now knows how to fix it so I don't have to go near any of our 6 burners now.

Edited July 26, 2019 by fredob43

[DJ54]

Now we wait for the OP to let us know how it was fixed.... 

 

FNL told me we were out of fuel for the stove... went out

and opened the valve.....it worked. 

[sandyf]

On 7/25/2019 at 5:03 AM, Crossy said:

Certainly a bad gas/air mixture (no air).

 

As noted above check the jet which will be near the control tap and the air inlet which should be near the jet. The mixer tube may be clogged too.

 

Taking the whole thing apart and cleaning will likely return it to operation.

Exactly, a yellow flame means insufficient air and in this case virtually no air at all. Your suggestion would certainly be a good starting point. If it was merely the holes on the burner blocked then what flame that was there would be blue, and roaring like a bunsen burner.

Personally I think there is a pressure problem, the gas comes through a small jet and needs velocity to suck air into the mix. The most obvious cause would be the bottle nearly empty but it could be a bad setup, a mismatch between gas and regulator or jet.

In the UK Butane is 38mbar and Propane is 50mbar but the connections are such the bottles and regulators cannot be interchanged but I have seen a similar problem when a Propane cooker has been installed on a Butane supply and from what I have seen anything seems to go in Thailand.

In a previous life I used to design gas cookers for caravans.

 

[RocketDog]

On 7/24/2019 at 7:41 PM, BritManToo said:

There's usually a gas/air mix 'shutter' on the pipe that comes from the gas level knob.

That will fix the problem.

 

 

Spot on, except in this case the gas pressure is just too low.

 

The gas/air mixture butterfly only needs adjustment if the gas type changes.

 

It's also very unlikely that the burners are clogged so badly as others have suggested.

[RJRS1301]

On 7/25/2019 at 7:38 PM, Odin Norway said:

How many foreigners does it take to clean a gas stove???? 

Does the stove want to be cleaned:)?? 

[samuttodd]

Take the top element off the assembly and clean all of the crud off with rubbing alcohol or acetone.   Take a wire and clear all of the holes where gas is supposed to come out.    Give it some time to fully evaporate and dry before you try to run it again.    

[BritManToo]

2 hours ago, RocketDog said:

Spot on, except in this case the gas pressure is just too low.

The gas/air mixture butterfly only needs adjustment if the gas type changes.

It's also very unlikely that the burners are clogged so badly as others have suggested.

I had a double gas hob arrive in the post like the OP, one burner worked, the other was yellow.

On some of the designs it's easy to shift the shutters as you move them around.

Probably someone wiping it down knocked it out of adjustment.

But doesn't really matter what the cause, the shutters can probably fix it.

Edited July 26, 2019 by BritManToo

[RocketDog]

16 hours ago, BritManToo said:

I had a double gas hob arrive in the post like the OP, one burner worked, the other was yellow.

On some of the designs it's easy to shift the shutters as you move them around.

Probably someone wiping it down knocked it out of adjustment.

But doesn't really matter what the cause, the shutters can probably fix it.

Sure thing, I agree they are easy to adjust.

 

However, the shutters can only control the air/gas ratio. They can't compensate for low gas pressure. Closing the shutters will decrease the air to mix properly with the lowered gas flow, but the flames will still be weak, as in the OP pictures.  That's why I doubted that the shutters were the correct solution.

 

Can't hurt to experiment though.

[zappalot]

since the stove is on our terrace where it gets wet during rain I guess that rust is the main problem.

It is not really dirty. I tried to clean everything a bit but not much result.

Why should the pressure be a problem? Have used several bottles of gas and never had a problem. When the gas was finished it just stopped working  instantly. It always worked until the last second

 

So finally I ordered a new gas stove for just 360 baht

[scorecard]

On 7/25/2019 at 12:23 AM, Gracas said:

Or try a small drill bit which is the correct size and just twist it with your fingers.

Or buy a whole new set up, not expensive at all, available everywhere. 

[KittenKong]

17 hours ago, zappalot said:

So finally I ordered a new gas stove for just 360 baht

Curses! Now we will never know. ????

[brianthainess]

Oh work it out,did you never use a bunsen burner at school ?

[brianthainess]

On 7/26/2019 at 10:30 AM, thaibeachlovers said:

I used a drill bit of the same size as the hole. Scrapes the dirt off better than a piece of wire.

Not always dirt though. A very expensive stove never burnt right for me, even when brand new.

Bad to use a drill bit even if it's the same size you could easily enlarge the jet not a good idea at all 

[brianthainess]

On 7/25/2019 at 10:38 AM, transam said:

Better still, fling it over the fence and buy a new one.....????

Wife or stove ?

[Thongkorn]

4 hours ago, brianthainess said:

Wife or stove ?

Does the bit of wire theory work unblock all the holes,

[baneko]

You need new stove amigo
That one is from the ark.

Sent from my SM-G975F using Thailand Forum - Thaivisa mobile app

[cheeryble]

There's usually a gas/air mix 'shutter' on the pipe that comes from the gas level knob.

That will fix the problem.

 

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Exactly......there's no air mixing in....that’s why u have yellow flame instead of blue

Having said that there’s not much yellow flame anyway

 

 

Sent from my iPad using Thailand Forum - Thaivisa mobile app

[thaiguzzi]

On 7/25/2019 at 5:03 AM, Crossy said:

Certainly a bad gas/air mixture (no air).

 

As noted above check the jet which will be near the control tap and the air inlet which should be near the jet. The mixer tube may be clogged too.

 

Taking the whole thing apart and cleaning will likely return it to operation.

Or just buy a new one.

One whole cooker/burner with S/S surround on S/S legs with a S/S shelf ready to go less regulator is like 700 Baht....

[johng]

Its been pointed out before ,but the bronze piece with holes in it is installed upside down, flip it over and very likely the flame will be fine.

 

 

[Moonlover]

On ‎7‎/‎24‎/‎2019 at 7:55 PM, KittenKong said:

No, it's just crap from pans that have boiled over that has blocked the holes. I used to have gas stoves and I know the problem well.

 

Just lift the tops off, give them a good soak and then clear the jets with any convenient poking thing like a bit of wire. Nothing to it.

Agreed. I do myself regularly.