DIY gas stove piezo ignition repair

In detail: DIY repair of piezo ignition of a gas stove from a real master for the site my.housecope.com.

On many models of gas stoves, designers install automatic ignition, which is switched on with the supply of gas or from a separate button. This function is very convenient: you do not need to be in contact with an open flame in order to ignite the burner. If you suddenly find that the autoignition on the gas stove does not work, do not rush to call the service: it is quite possible to repair this malfunction with your own hands.

Based on the statistics collected, gas stove specialists have compiled an approximate register of common failures.

When the burner control knob or the dedicated separate button is pressed, the electric ignition does not occur.
The automation of the product in the gas stove works constantly, clicks are heardbut there is no spark - the gas is not ignited.
Releasing a button or knob does not turn off the system.
The device continues to operate continuously, even when the button is not pressed.
Knocks out a machine gun protection in the apartment panel at start-up.
The circuit of piezo ignition or electric ignition of the stove is closed.

Electric ignition can only be used on gas stoves. Its main function is to ignite the blue fuel at the moment it exits the diffuser of the burner installed on the gas stove. It happens automatic and mechanical type... In the first version, special piezoelectric elements ignite the gas-air mixture when you turn a switch on the control panel, and in the second case, the user must press a special button. The spark ignites the gas and cooking can begin. An automatic gas ignition device is the most capricious and unreliable device from the entire arsenal that a modern gas stove is equipped with.

Video (click to play).

Very important! Never try to turn on the system with the burners removed - breakdown to the body is guaranteed.

Taken together, the entire operation of this system looks like this:

the user presses the button, thereby supplying voltage to the capacitor, which begins to charge;
the level on the thyristor gradually increases, when it reaches the set threshold, then the capacitor is discharged;
a voltage arises at the output of the entire system, which activates a special device - an arrester;
the spark ignites the gas.

The whole system works much faster than we are talking about it. The spark is supplied to the burner that is currently on (in older models it was supplied to all devices, but the one where the gas was accessible was ignited). The start buttons are located under the controls. Electric ignition powered by mains with an alternating current of 220 volts and is vulnerable to voltage surges that occur quite often. After a power surge, it can constantly click, which indicates a breakdown.

The system will work only if the plug of a separate cable is connected to the home electrical network, which many users forget and call the service with complaints.

Why does the electric ignition of the gas stove not work? There are several reasons for a malfunction in this device.

There is no spark on the electrodes.
Moisture or grease has come into contact with the interior of the system or the surface of the plug.
A crack or a burst of ceramic candle insulation has appeared.
Burnt out transformer - spark generating unit.
The contacts of the power button have oxidized or carbon deposits have formed on them as a result of a short circuit (short circuit).

Some malfunctions can appear after wet cleaning the hob, when moisture gets into the inside of the hob. To eliminate them, it is enough to do prophylaxis: cleaning contacts, drying candles - almost the same measures are done by motorists.

If only one burner does not ignite, then the reason may be damage to the high-voltage wire to the ignition electrode, the ignition device itself, or a malfunction of the channel of the entire unit.

When you have made an inspection, found out the cause and diagnosed the problem, you can start to repair the gas stove yourself. It is carried out similarly for all models. The famous Italian brand Ariston or the Belarusian Hephaestus stove, which is in great demand among Russians - there is no difference, the ignition systems are almost identical except for purely individual nuances.

Refresh your knowledge by reading the instructions for use of the product before starting work. Knowledge of the principle of operation and the device of a gas stove is necessary for its successful repair.

We ignite the faulty burner using a third-party source of open fire, matches or a special lighter - the flame must be even and distributed over the entire circumference of the divider. Flame yellow means the wrong concentration of gas and air: it is necessary to clean the nozzle or replace it. It is possible that the holes in the divider are clogged or moisture has entered. It is necessary to do preventive maintenance, blow out all the holes, remove the burner body and inspect it.
All electrodes and switches are connected in parallel. Each electrode is powered from a single ignition unit, but their activation comes from different buttons. To make sure that only this button does not work, and the control unit is normal, you need to turn on the next hotplate. If gas is ignited - repair the button, and everything else in the system is working properly.
If the ignition device cracks constantly, then it is necessary check contacts - they could stick from the ingress of fat or carbon deposits formed as a result of oxidation. Before repairing, do not forget to disconnect the stove from the network, then carefully dismantle, clean the contacts or dry them with a hair dryer. Compliance with safety guidelines will protect you from injury.

Most of the breakdowns that led to the failure can be eliminated on their own - they are not dangerous for the user, but it must be remembered that gas stoves are potentially dangerous products, so even preventive work must be performed carefully.

Sometimes a breakdown of the ignition button leads to the fact that the repair will not help - a complete replacement is required. In this case, it is better to go to special stores and purchase a similar option.

Cheap printed circuit boards that make up the electronic stuffing of household equipment cost $ 10. The consumer avoids repairing budget gas stoves with electric ignition with their own hands. A price exceeding $ 30 unwittingly provokes the thought of saving money. You visit the forum of radio amateurs: you see ... Ready-made electrical circuits of ignition devices. Wind step-up transformers, look for capacitors, solder, smoke equipment at your own peril and risk.

In contrast to most household appliances, repairing gas stoves with electric ignition forces you to master the technique of replacing resistors. A frequent, ongoing process. Newcomers challenging the appropriateness of the event cause general indignation among members of the forum. They call the dilettante offensive phrases, condescendingly explain, inside the high-voltage unit:

High voltage transformer.
Capacitor.
Diode.
Resistor.

The electrical circuit is specially filled with compound, the burdock will not get inside. You pick it up, saving your hard-earned $ 30. The self-taught ignore the manufacturer's thoughts about protecting products against unauthorized access.

The gas stove electric ignition unit optionally contains control elements - thyristors, triacs. It takes a long time to explain the exact principle of operation of the components of the electric ignition. It is worth noting: the behavior of semiconductor products resembles a key (a tap - plumbers are more accustomed to think). Semiconductor electronic elements are used to drive a power line through a voltage of 5-12 volts.

The analogy of a water valve is complete. A person makes a symbolic effort, opening the tap, releases the incredible power of the pump. The scanty voltage of the control electrode reaches the operating point, the thyristor opens, starting the electric ignition circuit. There are two positions: open, closed. Pure digital microelectronics. Any processor is formed by semiconductor keys - miniature, indistinguishable by the human eye. The PC is considered a logical evolutionary continuation of electronic circuits.

The high-voltage transformer increases the voltage (units of kilovolts) of the output winding, the slot of the burner arresters illuminates the electric arc. Gas is supplied by the handle of the same name, starting the electric ignition circuit. There are other models of devices. Thanks to the spark, the gas ignites:

pressing the button, the cook charges the capacitor with rectified voltage;
the capacity begins to accumulate electrons;
the voltage level of the control thyristor rises when it reaches the threshold value, the capacitor discharges, warming up the primary winding of the transformer;
the output of the electric ignition circuit generates a voltage that causes the arrester to operate;
the spark ignites the gas.

The principle of operation of electric ignition is based on charging a capacitor through a rectifying diode to a certain level. The specific implementations of the schema vary. Be ashamed to study an electrical engineering textbook: repairing the electric ignition of a gas stove with your own hands is easier than a steamed turnip. Know a couple of rules, be able to solder.

The mentioned resistor of the electric ignition circuit is more often with a nominal value of 3.9 kOhm. The dissipation power is 0.5, less often 1 W. The size of the capacity has long been known (according to the opinion of members of the forum) - a couple of fractions above 2 microfarads (the numbers go in jumps according to the rows given by GOST, it will not be possible to find exactly 2 microfarads, except from the E24 series) with an operating voltage of 250 volts. The radio amateur will not notice the difficulties. There were times when TVS were manually rewound!

The average person wants to know the sequence of actions. First, it is necessary to disconnect the electric ignition of the gas stove from the voltage source. The second step is to remove the electronic, high-voltage blocks. The design comes with separate printed circuit boards, a single substrate. There are other options.

Begin inspection by evaluating the quality of the tracks, soldered joints. The conductor layer, which looks like a silver stripe, is covered with a layer of varnish. Made to protect the electric ignition circuit from external factors, primarily moisture. The varnish reliably covers the conductive layer. Do you have nail polish at home? It will do one hundred percent.

Carbon deposits are cleaned with a zero skin, degreased with alcohol, varnished on top. The peeled, torn tracks of the electric ignition circuit are repaired.

Example. The conductive layer is torn. Both edges are slightly cleaned with emery, tinned, connected with solder. A varnish is applied on top of the cooled solder, alcohol is applied as needed. For wiping the PCB, of course.

Burnt resistor is black. The denomination is indicated above. It is not forbidden to put an element more powerful. Eyewitnesses unanimously say: the further process of exploitation is going excellently. Let's give the plate circuit a 9 kΩ resistor. It is better to take the dissipation power equal to greater than the analogous parameter of the original element. 1 watt will do.

The breakdown of the capacitor is visible from afar. Some (electrolytic) ones swell, the swollen keg cannot be missed by an attentive master. Regarding the denominations, it is recommended to ask the members of the forum.Modern marking of resistors with multi-colored rings is more complicated than the existing alphanumeric inscription. Tolerance was expressed as a percentage.

Repairing the electric ignition of a gas stove can be a simple matter. If the transformer windings are burnt out, you will have to buy a new one. Do you want to check the localization of the fault? For each output we find a pair that rings. The resistance (use a multimeter) is hundreds of ohms. There were "legs" hanging in the air: rather, there was a problem with the installation of the transformer. Rewinding a lesson is not easy. The vastness of the network will provide you with valuable information. A core of the form of the letter Ш is used. There are dozen primary turns, the secondary winding will have to be taken seriously.

After examining the circuit boards of the gas stove, pay close attention to the state of the button. Control panel element that initiates the process of ionization of the spark gap. The contacts of the electric ignition button are powered by the voltage of the centralized network of 230 V. Brass contacts with a short circuit of the circuit are easily melted by the welding arc. It is recommended to clean the pads, check the performance of the switch with a multimeter (ringing).

A product that can withstand the operating voltage is suitable. Electric ignition will not work any worse. At times, installation is accompanied by technical difficulties. The button does not fit the installation dimensions of the case. Modify with a file.

The main thing is to solder the jumper correctly, the necessary spare parts are often sold separately.

Each burner is equipped with a candle, a combustion control device (thermocouple). Electric ignition of a gas stove schematically differs little from an ordinary car. Do you want to check if the gas stove spark plug is working properly? Turn off the gas. Remove the reflectors, baffles of each burner (round things that form tongues of fire), look ... When the ignition is pressed, the products give a good spark. 1 candle broken? The reason for the breakdown of the electric ignition of the gas stove was found.

The combustion control circuit is composed of a thermocouple (temperature sensor of an arbitrary type). It happens that the electric ignition works 100%, the gas refuses to burn. The point is rather in this node. The command closes the blue fuel supply path. A properly beating spark of a gas stove is powerless to set fire to air devoid of a combustible mixture.

The electric ignition unit is equipped with 4 or 6 outputs, the literature ignores the reason for the need for the specified number of contacts. We assume 1 pair is used by the oven, grill. Modern trends oblige the manufacturer to produce two-in-one models. A gas stove with an electric ignition of the oven is convenient: you will find models where the opportunity is not realized, and those where you will have to modify the circuit with a copper core. Will need help from her husband.

We will be ashamed to call the electrical circuits for igniting a gas stove complex. Hams make it easier. The getinax board is etched out, the necessary elements are soldered. The original composition of the electric ignition of a gas stove provides a ready-made transformer, the button discussed above.

An experienced engineer can usually improve this by the manufacturer. The Internet gives an interesting scheme for the electric ignition of a gas stove, formed by a triac, striking a simple one.

The electric ignition Zanussi gas stove will make you forget the look of a matchbox. This is what company officials say. The business class segment is represented by products from Gorenje (Slovenia). Despite the abundance of brands, an almost complete list belongs to the Electrolux concern (headquartered in Stockholm). The mentioned Zanussi belongs to the category.

When buying, check the availability of the oven electric ignition option. The function is not implemented everywhere. Sometimes something may need to be finalized. The average price of gas stoves hovers around $ 400, with Bosch, Ariston and Gorenje out of this range. What attracts the buyer so much.Among budget models we will meet Hansa, Nord and Zanussi mentioned above. $ 240 and equip your kitchen with a real electric gas stove. Not expensive at all!DIY electric ignition repairModern gas stoves or gas hobs are equipped with electric ignition.The electric ignition of gas stoves and hobs is turned on at the moment of turning the gas supply knob to the selected burner or by briefly pressing the electric ignition button.You hear a click generated by the discharge of the electrode on the ground of the cooking zone. At this moment you can see a spark, a kind of lightning, but in miniature.Discharge after discharge follows at intervals of one second, until the gas supply knob is released.If you have an electric ignition button, the number of electric ignition discharges is equal to the number of times the electric ignition button is pressed.Accordingly, the frequency of discharges in manual mode is equal to the frequency of pressing the button. The discharge causes ignition (ignition) of the gas supplied to the selected burner.DIY electric ignition repair. But since the scheme for generating a spark works from the mains (electricity), ignition has acquired the name of electric ignition.In the case when sparking occurs in an automatic mode, such an electric ignition is also called electronic.

Image - DIY gas stove piezo ignition repair

By pressing and releasing the electric ignition button, a single sparking occurs (at the moment the button is released).
By pressing the gas supply knob on the burner, continuous sparking occurs at a frequency of one second.

1. The first option (fig. 3) is based on a manual charge-discharge mode of a storage capacitor. It works like this:

(r1- 3.9k, c1- 2.2MkfX600V, d1- 1N4007) The circuit is connected as follows:

On the diode d1, the mains voltage is applied (Figure 3.1).

By pressing the electric ignition button, you apply the mains voltage to the capacitor c1 (Figure 3.2). The capacitor is charging.

At the moment the button is released, the contact of the capacitor c1 (Figure 3.2) is connected to the transformer t1 through the contact (Figure 3.3).

The reverse process takes place - the discharge of the capacitor through the primary winding of the high-voltage transformer t1.

On the secondary winding of the transformer (Fig. 3.t1-1) and (Fig. 3.t1-2), an output voltage of about 10 kilovolts is formed. A spark is forming.

By pressing and releasing the button, the process is repeated. The terminals of the transformer (fig3.t1-1) and (fig3.t1-2) in (fig1 and fig2) are marked with number 1.

Conclusion (Figure 3.1) corresponds to numbers 5 and 2 (Figure 2). Conclusion (Figure 3.2) corresponds to numbers 7 and 3 (Figure 2). Conclusion (Figure 3.3) corresponds to numbers 6 and 4 (Figure 2).

Electric ignition is more common with four and six-channel (Fig. 1 and Fig. 2) under number 1, the taps for connecting the electrodes are indicated on which you observe sparking.

In other words, we have four ignition electrodes or six electrodes. The number of electrodes depends on the number of secondary windings of the step-up transformer.

If there are two windings, then we have four outputs for four electrodes. If there are three windings of the step-up transformer, we have six outputs for six electrodes.

Electric ignition, which allows you to connect six electrodes, is usually used in gas stoves of a single design with an oven. And as a result, two of the six available electrodes are in the oven and are used to ignite gas in the oven.

The appearance of electric ignition devices can be seen in (Fig. 1 and Fig. 2). They have some difference, but the circuit design and the principle of operation remain unchanged.

Purchase detailed video instructions and manuals on how to repair an electric ignition. Description of all encountered ignition faults and methods and methods for their elimination, repair.

Previously, gas stoves were produced without electric ignition. In fact, this is not an obligatory function, but its appearance greatly facilitates the process of using a household appliance: there is no need to buy a special lighter or matches. However, over time, the function often fails.Let's figure out what to do if the electric ignition device does not work on the gas stove and whether it is possible to fix the breakdown on our own.

Electric ignition burner

Electric ignition at gas stoves can break unexpectedly: the switch turns, gas comes out, but there is no spark. A breakdown of an additional function can occur for completely different reasons.

But first of all, it is worth determining that the function of electric ignition of the gas stove is really out of order. This may be indicated by the following signs:

while pressing the control knob or the button for the burner, the electric ignition function does not work;
automatic functions of the device operate in a continuous mode, sounds similar to clicks are noted. In this case, there is no spark, the gas stove simply does not ignite;
when the handle or button is released, there is no system shutdown;
the device works even without pressing the button;
there is a knocking out of the circuit breaker in the area of the apartment panel when the device is turned on;
the presence of a malfunction can be established according to the piezo ignition and electric ignition circuit, it can be closed.

The electric ignition system is provided in gas-type stoves. Its main purpose is to ignite the fuel that comes from the burner diffuser. The electric ignition device can be of two types:

Auto ignition has special piezoelectric elements, which, when the switch is turned on the panel, ignite the gas-air mixture. When using a mechanical device, a special button must be pressed. When pressed, a spark is generated, from which the gas is ignited and ignited.

The principle of operation of electric ignition looks like this:

when the user presses the button, voltage is applied to the capacitor region;
after that, the charging of the capacitor begins;
further there is an increase in the level on the thyristor;
as soon as it reaches the permissible limit, the capacitor begins to discharge;
at the output of the device, a voltage appears, due to which the arrester is activated;
the generated spark ignites the gas.

Despite the fact that the process looks complicated, it happens in a matter of seconds. The spark always hits the area of the hotplate that is currently on. In obsolete products, the spark was supplied to all burners, but ignition occurred only on the one on which the gas supply was open.

The electric ignition is powered from an electrical network with a voltage of 220 volts. Its work also depends on voltage surges, which can occur quite often. If a power surge occurs, a clicking sound may occur, this usually indicates a breakdown of the electric ignition device.

High-voltage unit device

Many owners of household appliances often have a question, why did the electric ignition stop working? The failure of this function can occur for various reasons, among which it is worth highlighting:

no spark on the electrodes;
moisture or grease has got on the surface of the inside of the system or on the candle;
breakdown of the electric ignition can occur due to the appearance of a crack or due to damage to the insulation of a candle from a ceramic base;
there was a burnout of the transformer - the spark generation unit. Normally no spark is observed when the button is pressed. You can do it yourself, but experts recommend changing the part to a new one;

Spark Generation Unit Test

Sometimes minor faults can appear as a result of wet cleaning the hob. This usually occurs due to the ingress of moisture into the interior of the household appliance. To eliminate everything, it will be necessary to take preventive measures: clean the contacts, dry the candles.All these actions can be carried out by any user without knowledge and experience in this matter.

Malfunction may occur with wet cleaning

It happens that only one burner does not light up. This may be due to a fault in the high-voltage wire that goes to the ignition electrode. Possible breakdown of the ignition device itself, or failure of the block channel.

Breakage can sometimes occur when cleaning a hotplate

You can repair the electric ignition device yourself, but you must first carry out a thorough inspection of the device. It is important first of all to establish the cause of the breakdown, the degree of complexity. If the malfunction is simple, then you can fix it yourself.

If the electric ignition function does not work well, then the repair process for all models of household products is usually carried out in the same way. All gas stoves have this function arranged in a template.

It is advisable, before starting the repair process, to carefully study the device of the stove: you can find information on the Internet or study the attached instructions for use. Knowing how the appliance works will help you perform a high-quality and correct repair.

Repair of electric ignition depends on the type of breakdown. To understand how it is produced, it is worth considering the types of breakdowns and their elimination:

the burner should be lit with matches or a special lighter. Look carefully at the type of flame: it should be even, light, and should be spread over the entire circumference of the divider. If a yellow color is noted, then this will indicate an incorrect reading of the gas-to-air ratio. To fix this problem, you need to clean the nozzle or completely replace it. Perhaps the cause of the malfunction is a blockage of the diffuser holes or the presence of moisture in them. It is also advisable to take preventive measures: blow through all the holes, remove the burner body and carefully examine it;

To repair an electric ignition, you do not need to have much experience and knowledge, even inexperienced users can cope with this.

However, sometimes a thorough check and diagnosis of the instrument is required. It certainly won't work with a flashlight and a simple screwdriver. For this reason, it will be necessary to call a specialist. Of course, the services of a master can be expensive, but sometimes a breakdown in an electric ignition can occur as a result of a serious cause that can pose a threat to a person.

Sometimes repairs should be entrusted to professionals.

In any case, before starting to repair the electric ignition device, you should carefully study the device circuit. This will help to solve the problem much faster, without damaging the device. It is important to check the combustion beforehand, sometimes it may be the case in the burner or in other components.

There is a categorical prohibition, supported by administrative and criminal law, on unauthorized interference with the operation of gas equipment. But not everything that is called gas is directly it. But in reality, repairing a gas stove with your own hands is not only possible, but also necessary. After all, it is not always advisable to pay for the call and work of the master who replaced the faulty pen or adjusted the fuel supply level. And, all the more, there is no need to take an official permit from the gas service for this.

The principle of operation of gas stoves is as follows. Natural gas is supplied to the burner from a centralized gas main or an autonomous cylinder. At the moment of transition from the nozzle of the burner to the diffuser on the burner, the fuel is mixed with oxygen from the air. After that, it becomes possible to ignite the gas-air mixture, the combustion of which will continue until the gas valve is completely closed..

The furnace includes several systems that are responsible for the correct operation of the entire unit:

gas system, which includes pipes and hoses with taps and burners;
an electrical component designed for lighting, auto-ignition and grill operation;
the body of the device, which has a template set of parts and is made of enamelled sheet steel.

Important! The overall design is the same for all ovens. Some models differ only in design and functionality.

The hotplate is the final stage of gas delivery. An already burning jet of a gas-air mixture, moving along the base, fed to the lid, reflected from which it enters the divider... There, the flame divides into uniform little tongues. When the burners are removed for cleaning, the burners with nozzles at the ends are visible. They are also called jets and nozzles. There are three types of burners used.

Diffusion... In them, gas mixes with air in a natural way. Used in the oven.
Kinetic... The pressure in the gas line of the furnace is low. Its energy is just enough to suck in the mixing air and supply it to the burner.
Combined... Modern ovens use two methods at the same time.

Panel can be manufacturedbut from enamelled steel sheet. But today most slabs are made from specially hardened impact-resistant glass. Directly under the hob are electrical devices and a gas system, into the pipeline of which several control valves are embedded. The intensity of the flame depends on the degree of opening of the regulators.

The electrical component of the oven includes timer, thermometer and lighting elements. It also includes electronic controls that control the operation of heating elements and fans, which are present in some samples.

Gas ovens are divided into two types.

Dual mode, without ventilation. Sometimes a grill is attached to the top of the oven.
Multi-mode... The air in the oven is moved forcibly by the fan. And so that it does not extinguish the flame, special hollow burners are used.

To preserve heat in ovens, thermal insulation is used, and the door is made of two or three layers of glass.

Gas leakage is controlled by a thermocouple, which is located in the center of the flame and, when heated, generates a current that feeds a small electromagnet... The task of the latter is to keep the valve on the gas pipeline open. In the event of a sudden cessation of combustion, not associated with turning off the fuel supply manually, the sensor quickly cools down and the magnet turns off. This leads to the interruption of the gas supply.

It takes a few seconds for the hob to turn on for the sensor to reach the desired temperature. AND all this time you need to hold the regulator knob pressed. Some users consider this a serious inconvenience and choose ovens without gas control. Such models can be found from several manufacturers - Mora, Gefest, Ardo, Ariston, Darina and Indesit.

Important! It is better to diagnose a malfunction of a gas oven when it is turned off. Failure to do so may result in a serious accident using a damaged device.

If there is a smell of gas in the room, and the stove is not working at that moment, then somewhere there is a leak of blue fuel. It is necessary to disassemble the oven and smear all connections of the gas pipeline with soapy water both outside and inside. Air bubbles will show where the gas is coming out.

To inspect regulators and shut-off valves, you need to remove the top cover. To do this, remove the grates and burners, unscrew the fixing screws with a screwdriver and lift the hob lid.

To check the inside of the oven for leaks, first you should look at which side of the plate the gas supply goes into it. Depending on what you see, you need to shoot the right or left wall.After detecting a leak, it is required to re-twist the nodes by winding more sealant in the form of a FUM tape or a Loctite 55 thread onto the thread.

Advice! For work involving gas leaks, it is recommended to call the emergency gas service.

Gas stoves, like any other complex mechanisms, are also prone to malfunctions, which are as follows: