Why does a gas stove need a gas-control function?

People’s hesitation to buy gas stoves is largely due to the potential danger of fires. When people are deciding which stove to choose, they often wonder about the gas control function in gas stoves. This feature serves as a safeguard by automatically cutting off the gas supply in the event of a fire.

Advantages of using gas control

Gas utilized in household stoves and hobs presents a perilous substance, carrying the potential for fatality through both explosion and poisoning. Reports of accidents reveal a troubling prevalence of such incidents. Fortunately, gas control technology diminishes the level of danger to nearly zero. By automatically halting the fuel supply in the absence of a flame, this system offers a significant boost in safety. In fact, blocking the availability of combustible materials serves as a near complete guarantee against both fires and the risk of poisoning. In addition to providing technical solutions for averting emergencies, gas control users are freed from the burden of constant stove surveillance. Should a gust of wind extinguish the flame or if food happens to fall onto the burner, the gas control will swiftly cut off the supply. Furthermore, this technology affords homemakers the chance to reduce their level of child supervision. Accidental turning of the knobs will no longer initiate gas release, as the knobs must be firmly held down for several seconds, a task quite difficult for young children.

How the gas control works

• temperature sensor;
• electromagnetic valve;
• valve controlling the flow of gas to the area where combustion takes place.

A thermocouple is a traditional solution, consisting of two wires soldered together at one end. Composed of different materials, these wires produce a potential difference and, consequently, a voltage when exposed to heat at the control sensor.

Positioned in the area of the flame, the thermocouple activates the damper valve, which in turn opens the gas supply. As long as the burner flame continues to burn, the thermocouple continuously generates electrical energy, allowing for the sustained use of the flame.

Once combustion ceases, a comprehensible process occurs. The thermocouple begins to cool down, ceasing the generation of current within the circuit. This causes the solenoid valve to release, prompting the gas valve spring to close the flapper and halt the gas supply. This process occurs quite rapidly, as the thin thermocouple wires cool down within a mere fraction of a second.

Gas control in the oven

Modern cooktops are equipped with gas control in every burner, ensuring maximum safety. Even older stove models, although lacking this advanced feature, still incorporate a basic gas control system in the oven.

The gas control is indicated by the color red, while the igniter is indicated by the color green.

This particular aspect is of great importance. The reason for this is that the absence of the burner flame can be visually detected. The oven’s burner is situated at the bottom, hidden behind a steel panel, and visibility is limited through the door window. Consequently, it becomes impossible to determine if the flame is dying out. This is where the gas control plays a crucial role in ensuring safety.

Diagnosing a breakdown

Just like any other technical solution that consists of multiple components, the gas control system can experience malfunctions. These malfunctions can be easily identified. For instance:

• Gas may be supplied even without the ignition and combustion process;
• The burner might switch off on its own;
• The time it takes for the flame to start (from pressing and turning the knob to the actual combustion) may increase.

It is important to mention that certain elements of the gas control system require precise alignment. This means that they need to be placed and configured correctly. Therefore, it is recommended to seek the assistance of professionals when dealing with gas stove repairs, especially if the manufacturer’s warranty is still valid.

To avoid gas control failure, it is important to adhere to the stove operation guidelines. It is essential to keep the stove’s surface clean and regularly disassemble and wash the burners. In a home setting, with basic handy skills and tools, it is possible to clean the thermocouple.



The first step is to remove the cooking surface. In certain stove models, accessing the thermocouple may require disassembling the burner. Once accessed, carefully clean the thermocouple to avoid deformation or displacement.

If the individual lacks any prior experience with dismantling cooking surfaces, it would be advisable to seek assistance from professionals. An added incentive for making this choice would involve highlighting a few basic details: the gas control might fail to operate correctly due to an improper installation of the thermocouple, loose connections, possible obstructions of the moving components, or even normal wear and tear of the electromagnetic coils.

How to deactivate the gas control

Aside from the obvious positive aspects of this function when using gas stoves, there are several drawbacks that arise directly from its operation.

1. The requirement to hold the gas knob for a few seconds to allow the thermocouple to heat up.
2. Disruption of the burners in the event of a system failure.
3. Difficulty in conducting repairs.

In order to disable the gas control function, the following steps must be taken.

1. Disconnect the gas supply to the stove.
2. Locate the gas control system on the gas pipe.
3. Unscrew the thermocouples from the solenoid valve.
4. Remove the solenoid valve.
5. Unscrew the specialized spring that controls the gas flow mechanism.
6. Reinstall the mechanism and reassemble the entire system.

By removing the spring, you eliminate the possibility of constraining the flow of blue fuel. This means that the solenoid valve will no longer have its intended function and will allow gas to flow regardless of whether it is powered by the thermocouple or not.

While disabling the gas control function on your own can save you time and money, consulting a professional can ensure the safe usage of the appliance.

Keep in mind that unauthorized interference with gas equipment can lead to administrative consequences and, in rare cases, criminal liability.