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Posted on Nov 10, 2007

Burner will not stay lit

Cleaned it. Burner ignites OK but will not stay lit when knob is released.

  • 2 more comments 
  • GEFU Nov 13, 2007

    I have a SMEG SAR134 gas cooktop. I can ignite the wok, but once I release the knob, the flame will go off. I have cleaned the thermocouple thoroughly, but still the wok will not stay lit. I've also tried to press the knob a few times like pumping it, it works sometimes, but most of the time it won't work.

  • Ivie Jan 28, 2008

    I have an indesit dual fuel range cooker. Bought secondhand-supposedly never used. Initially had difficulty with the burners staying alight. Two did but not the others. Changed out some of the burners as they didn't seem to fit correctly but this didn't solve the problem. Now the two that were working don't. Have changed one of the themocouples but that also hasn't solve the problem. All the buners will ignite but when you release the knobs they go out even if you hold the knobs down longer than the recommended time. The oven (electric) works perfectly. Any suggestions?

  • abbysmom Aug 31, 2008

    I have a 2 burner Princess Gourmet cook top in a '07 RV. From almost day one the bigger burned will always stay lit, but the smaller burner sometime does and mostly does not. It will light when depressed, but will not stay lit. HELP - if someone knows how to fix please tell me.

  • Anonymous May 09, 2009

    Top burner will stay lit after knob released.  Bottom burner will light but goes out after knob released. Gas supply is good, electrical connections good. Does any one know which component is bad?

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  • Posted on Nov 18, 2007
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Presuming the flame is touching the thermocouple, try putting slightly more pressure on the knob and hold for a few seconds longer. If this doesn't work try going through the same process with the knob removed - if this works you need to put a small piece of packing in the shaft of the knob ( a small piece paper might do). If this fails you need a new thermocouple.

  • 2 more comments 
  • Demy Vasquez
    Demy Vasquez May 09, 2014

    all burners seemed intermittently not staying i replaced both right thermocouple but still same. all burners seemed to be doing it intermittently

  • Demy Vasquez
    Demy Vasquez May 09, 2014

    thats AEG cooktop.

  • Brian Jenkins
    Brian Jenkins Nov 30, 2014

    Brilliant. Thank you. Just added a few wads of packing and hey presto

  • Paul Knight
    Paul Knight Jul 18, 2022

    we have a hob where one one ring will light and burn for a while and then only sometimes goes out. Pushing down on the control knob brings it back. Is that likely to be a part issue or just cleaning please? Thank you

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Related Questions:

0helpful
1answer

I have bosch pgl985uc burner problem. The center burner will not stay lit. Seems other have had this problem. I ordered all new thermo-couplers. Installed, since Bosch changed them to a new part number...

If The Burner lights and stays lit as long as the knob is depressed, but goes out after the knob is released then there is a failure with the thermocoupler or the valve itself. The thermocoupler can be tested once removed from the cooktop - as follows
Heat the tip on the thermocoupler with a match or lighter and measure the electrical connection (other end) with a voltmeter - it should read about 15 mV or slightly more with in a few seconds. If no voltage is read then the thermocoupler is faulty and should be replaced.
The valve coil can also be tested for continuity at while the unit is disassembled. If no continuity is found the valve is faulty and should be replaced
The small voltage created from heating the thermocoupler energizes the coil in the valve which in turn keeps the gas turned on while there is heat at the thermocoupler.
Some units actually reignite the burner if the heat is lost and the control knob is in the on position.

Hope this helps ....
1helpful
1answer

Gas burner will not stay lit. works fine when pressing knob for igniter function but goes out when knob is released

You have what we call a flame safe device fitted to the burner, (thermocouple lead), have you checked to make sure your flame on the burner is touching the tip of the "probe" on t'couple, if it isn't make sure that the ports on the burner are clear. If this does not solve problem then the thermocouple needs replacing by a Gas Safe engineer.
0helpful
1answer

No flame touching thermocouple

There must be a blockage on the inner flame ring as the gas is not getting to the thermocouple .
1helpful
1answer

The burners light, but it takes an inordinate time for them to stay lit. One of the burners will not stay lit when the knob is released, regardless of how long you depress the knob.

Need a new fsd ( looks like a small brass pencil) for the burner that won't light. The alignment of the ignition electrodes needs looking at and there over all condition I. E broken , worn , misaligned ect
2helpful
1answer

I have bosch pgl985uc burner problem. The center burner will not stay lit.

I have the same problem especially with the center burner, but now am having increasing difficulty with two other burners. Those will eventually stay lit if I depress the knob for 20 - 30 seconds. The center burner will not stay lit, even when keeping the knob depressed for 2 - 3 minutes!
2helpful
1answer

Igniter doesn't spark on only one burner

There are three parts to the ignition system typically.

The ignitor that is either in the burner or outside the burner.

The spark ignitor switch that is located on the burner control. (( one for each control ))

The spark modual. the modual creates the hi-voltage spark.

If the burner that does not ignight with its control does not spark but does spark with one of the other controls then the spark ignitor control switch is bad.
You can test it with one of the other burner control knobs. (( just try a working burnder and when it clicks look at the bad burners ignitor and look for the spark.))

If the bad burner that wont ignight does not spark then either your modual is bas or the ignitor is shorting out.

If you see any little spark but it does not spark from point A to Point B like the other burners then your ignitor is shorting and should be replaced.

If your ignitor is ceramic and it is cracked, then it should be replaced.
3helpful
3answers

When i turn on a burner, it lights, but all 5 igniters continue to ignite

I have the same problem all but one burner. When using the other burners the igniters keep sparking after being lit. What do I replace?
9helpful
3answers

Burner ignites but doesn't stay lit

The Thermocoupler is faulty or has a bad connection - once the burner is lit, it heats the thermocoupler which then send a small signal to the valve to stay on - at that time you release the knob and the valve stays on ( supplies gas). If you give me a model number, i can get you a part number and price.
2helpful
4answers

Baumatic B40 Gas Hob : Gas not staying on.

we have the same problem... try removing the knob, ours works fine without the knobs ????
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