DIY ceramic hob repair

In detail: DIY ceramic hob repair from a real master for the site my.housecope.com.

Electric, induction and gas hobs are used for cooking. Each of them has its own advantages and disadvantages, and there are also a number of malfunctions that can be eliminated independently if they occur. Do-it-yourself hob repair can be done subject to certain recommendations and if you have the necessary tools.

Glass ceramic hob BOSCH

Hob repair Bosch, in some cases, you can do it yourself.

If, with the power supply connected, one of the burners does not work or the entire device does not work, we carry out the following work:

We check with a multimeter the voltage in the outlet. If it is, then the problem lies with the hob itself. You can check using the indicator, but it only indicates the presence of voltage. A significant change in the current indicators can lead to the operation of protective mechanisms.
We check the condition of the electrical cord and plug. If there is mechanical damage, it will be enough to replace the cord or plug. You can also check the supplied current on the panel itself, since mechanical damage is not always the cause of the cord and plug malfunction.
If the cord with a plug, the socket is in good condition, we dismantle the hob.

Removing the hob

If you repair a glass-ceramic hob with your own hands, you should know that the malfunction of some structural elements can only be detected with a multimeter, by taking measurements in individual sections of the circuit. When considering a Bosh hob, you should pay attention to the following elements:

Video (click to play).

In the absence of resistance or at low rates, these elements should be replaced.

The work of some structural elements can only be detected with a multimeter.

Another common problem is a broken wire in the hob connection block. Under certain circumstances, they can burn out or, due to poor installation, there may be poor contact. Checking for such a malfunction can be quite simple.

Let's highlight a few more problems that lead to improper operation of the hob:

Some models have fuses that can blow out due to high voltage surges. Their cost is low, the replacement procedure is quite simple. In order to protect expensive equipment from such situations, you should install a surge protection device. If the fuses constantly fail, you should check the operating features of the equipment itself, since the problem may not be in the indicators of the supplied voltage.
The burner may not work due to the fact that the contact on the heating element has disappeared. If the wiring is unsoldered, you can resume work, for which you need to have a soldering iron and be able to use it. The problem may be associated with the power supply, which also often loses contact.

If the heating element is burned out, it must be replaced with a new one

The design of electric hobs is quite complex, but many of its elements are highly reliable.

The principle of operation of an induction hob is to directly heat the contents of the cookware, and not the surface of the stove or the cookware itself.Due to the fact that the hob remains constantly cold, such kitchen appliances are very popular.

There are several problems in which you can repair an induction hob yourself:

If the hob does not turn on or does not turn off immediately, do not panic. Modern models from the manufacturer in question are able to determine the type of cookware, its absence on the hob. Therefore, if the cookware is not suitable for induction heating or if it is not installed, then a protective mechanism is activated. Do not forget that induction cookers do not heat the hob itself.
If the heat is weak, then initially you should check the type of dishes used, whether it fits the recommendations.
Repairing induction hobs, as in the previous case, you need to start by checking the circuit for the presence or absence of contact. Fuses often fail, as there are often power surges in the network. In this case, simply change the fuse.

The rest of the repair of induction hobs is similar to the repair of electrical panels.

Induction hob

To repair the electric and induction hob, you need to have the following tools:

Screwdriver Set. In order to carry out many dismantling work, you need to have several different screwdrivers, which may differ in size and type of tip. In addition to ordinary screwdrivers, you should pay attention to the need for an indicator that detects the presence of voltage.
The mounting knife is often used when carrying out electrical work. As a rule, it is necessary for changing the length, stripping wire strands and other similar work.
Pliers are often used during assembly work. However, they often have a sharp part that can be used to cut the veins.
It is often necessary to have wire cutters.

In addition, a multimeter may be needed to determine the voltage value. It determines various parameters of the supplied current. A soldering iron may be needed when carrying out repair work.

The high manufacturability of hobs raises doubts about the possibility of repairing them with their own hands from users and home craftsmen. But, like all sophisticated electronic equipment, kitchen surfaces are made up of separate functional units that interact with each other.

Having understood the functionality and interaction of components, having studied the methods for determining common malfunctions, understanding what and thanks to what turns on, you can, without resorting to the services of masters, carry out a simple repair of the hob with your own hands.

All modern hobs work according to the same principle - the user acts on the control sensors, thereby turning on the power relays that switch large currents in the heating elements.

Therefore, first you need to localize the breakdown, that is, determine the defective node. It is assumed that the cable, connection terminals, fuse, voltage presence is checked, and command set errors are excluded.

Cooking surfaces (panels) are electric heating kitchen appliances (electric stoves) that have glass-ceramic outer cover. Glass-ceramic has great strength, allowing it to withstand a significant weight of dishes, and has good thermal conductivity.

The attractive appearance, which some manufacturers (for example, Hansa) complement with artistic decorations, allows the stylish hob to successfully fit into the modern kitchen design.

Artistic hob design

Heating elements hidden under the glass-ceramic surface are of several types:

Spiral, working like conventional heating elements;
Corrugated tapes (modified filaments);
Halogen infrared lamps (HaloLight technology);
Induction coils that only heat the cookware material.

Various designs of thermoelectric burners

Burners of the first three types convert electric current into heat according to the Joule-Lenz law in the same way as an incandescent filament in a conventional light bulb or a spiral in a conventional electric heating element is heated. The principle of heating using induction is described in detail in the article on induction boilers. Do-it-yourself repair of induction hobs will be discussed below.

Thermoelectric heaters have a heat-releasing corrugation or spiral laid in a heat-resistant material, connection terminals, as well as heating sensors presented in the form of a bimetallic plate located on the line of the radius or diameter of the burner. Expanding, the bimetallic plate acts on the contacts, closing or opening them.

Hob burner device

Depending on the design of the hob, the temperature sensor contacts can be power contacts (acting like a thermostat), or signal contacts included in the electronic control circuit. Malfunctioning sensors (thermostats) are a common reason that the hob does not turn on.

In general, repairing hobs differs little from repairing electric stoves, which is described in detail in one of the articles of this resource. The main visual difference is the presence of a glass-ceramic surface and the type of heaters, the spirals of which are visible through the transparent surface. Also a characteristic distinguishing feature is sensory electronic unit and the complete absence of the usual control levers.

Hob touch control unit

Therefore, the greatest difficulty in the repair of electric hobs is the electronic touch control unit, which is also a display. To repair it with your own hands, you will need knowledge in radio engineering and special equipment.

But otherwise, the hob is not much different from an electric stove - the heating elements are switched on by power relays, controlled by an electronic control board, which receives signals from the sensor.

But at first, even without disassembling the hob case, you can determine the malfunction of the touch display and the electronic control unit. As a rule, the receipt of a command from the user is accompanied by a sound signal and is displayed on the display. If there is no reaction to touch, then it becomes clear that there is a breakdown in the sensor.

Indication of a properly working hob

The sensitivity of the sensor may deteriorate due to severe surface contamination. It should be remembered that the entire glass-ceramic surface of the hob requires careful maintenance and cleaning, otherwise cracks may form from the accumulation of limescale and burning.

Operating a stove with cracked glass ceramics will lead to its further destruction and breakdown, therefore, timely care and cleaning of the hobs is needed, as shown in the video:

Electronic board with display elements and control sensorsAs you can see from the figure, the electronic board of the control unit has many small parts, including microcircuits, so repairing such a module with your own hands requires deep knowledge of radio engineering. If the malfunction of the sensor control unit is reliably established, then it is better to take this board to a specialized repair shop.If surface diagnostics have not yielded results (the command turns on, but heating does not occur), you should look for a malfunction in the power switching unit.Some models of hobs can independently diagnose some malfunctions, signaling them using the error codes that appear on the display. You should carefully study the user manual and these codes - this will save time when troubleshooting.Error codes for some hobsThe power control unit (switching) of the hob consists of relay groupscontrolled by an electronic sensor unit. When the operating mode is selected, one or more relays are energized, supplying power to the respective heating elements.Arrows indicate power relaysEven for a novice master, it will be easy to disassemble the panel case with his own hands in order to independently determine the malfunction of a heating element or power relay. For this purpose, you will need a multimeter and skills to work with it. You will also need to determine the type of heating element itself in order to check it correctly (for example, the resistance of the induction coil is close to zero).More experienced craftsmen often use a different method - they check the voltage supply to the main nodes, moving from the power terminals through the power relays to the heating elements. The power relay contacts may burn due to frequent switching on, and checking the presence of voltage at the input terminals of the burner will determine if the relay has been activated. Image - DIY ceramic hob repair

Measuring the supply voltage of a cooking zone

It should be remembered that many elements inside the enclosure carry life-threatening voltages. Working under stress requires focus, mindfulness and sober thinking.

If the terminals of the hotplate are normal supply voltage, you can check the performance of the heating element visually - the filament should be warmed up. But, if the burner turns on, but does not heat up to the required temperature, you need to measure the flowing current. The easiest way to do this without breaking the circuit is with a multimeter equipped with a clamp meter.

The use of a clamp meter to check the current in the power circuits of the hob

Knowing the maximum power of the burner and the supply voltage, you can calculate the rated current according to Ohm's law. In the case of heating elements that work like a heating element, a decrease in the current and heating temperature may be associated with malfunctions in the electronic control unit, thermostatic elements or in the power relays.

If the halogen burner does not heat well, then an internal chemical change in the composition of the gas in the heating element or degeneration of the spiral is possible. In this case, if all other possible malfunctions have been ruled out, the HaloLight Heater should be removed and replaced.

The appearance of the hob burners without glass-ceramic coating

It happens that the burner turns on, but after working for some time, it turns off ahead of time. Improper operation of the heating element may be due to a malfunction temperature sensorinstalled on the hotplate. In order not to change the entire expensive burner, you need to disassemble the sensor with your own hands, clean or bend its contacts, as shown in the video:

To diagnose and repair the hobs, you will have to dismantle the equipment from the countertop, disconnect the power terminals and disassemble the case. It must be remembered that the glass-ceramic coating is vulnerable to point impacts and loads. Therefore, when turning the hob over, avoid small objects falling under the surface so that the weight of the cabinet is not applied to one point.

Mandatory care in the workplace when repairing a hob

It goes without saying that bumps, scratches and carelessness should be avoided. You should carefully examine the hardware fastening mechanisms - these can be bolted connections, screws, or latches.Some elements, for example, an electronic board, can be additionally fixed with glue or adhesive tape. When disassembling a particular model of the hob, you should first study the articles, images, videos available on the Internet.

Experienced craftsmen always check the physical strength of the terminal connections (with the voltage removed) - very often it is poor contact that is the reason that some burner does not turn on. If a faulty burner is detected with a multimeter, or a breakdown in the electronic board is detected, then it can be turned off with one hand alone, without the aid of a soldering iron, and taken to a workshop, where, to replace radioelements or relays, you will need skills in working with a soldering iron and the ability to work with radio components.

You should check the circuits very carefully so as not to confuse anything. In the video above, the author confused the relay, but nothing terrible happened. But, far from always, an error during radio installation can do without consequences, such as a short circuit, burnout of power circuits and failure of radio components.

The peculiarities of the operation of induction heaters can very often be interpreted as a breakdown - the command is given, but the burner does not turn on, there is no characteristic glow, and heating does not occur. The fact is that the metal of the cookware and the coil of the burner form a single oscillatory circuit, due to which high-frequency oscillations arise that induce currents in the metal kitchen utensils.

As mentioned above, the physical processes and the principle of heating using induction are described in detail in the previous article on induction boilers - you should familiarize yourself with this material in order to have an understanding of the operation of such equipment. In the case of hobs, induction heating is used to heat cookware, but the principle remains the same. Image - DIY ceramic hob repair

The working surface of the induction heater does not burn immediately after switching off

Repairing induction hobs requires an understanding of the high frequency generator and the self-oscillating processes that occur in the electronic circuit. The most susceptible to breakdowns are power switches (transistors), diodes and high-voltage capacitors that are part of the circuit. These transistors are often MOSFETs, and are not called bipolar semiconductors, but they can be detected as faulty.

As shown in the video, technicians in service centers can determine faults in electronic circuits, relying on experience, having available equipment and a large stock of various element base in order to carry out repairs by replacing defective elements. Surface diagnostics of the main components is carried out by the breakdown test method.

Electric voltage stabilizer

The following symptoms may indicate problems:

The hotplate does not turn on when the button is pressed.
The candles spark when switched on, but the cooking zones do not light up.
The panel turns off after releasing the start button.

Repairing a hob powered by electricity is possible in several ways.

Dirt on the hob, especially on the ignition mechanism, is the most common cause of sticking buttons. It occurs after splashing or boiling food during cooking. Over time, the dirt hardens, clogging the mechanism and the burners themselves. The solution to this problem is quite simple: wipe the surface and clean the nozzle with a needle. This will free the burner from burns and other particles that clog it. Once everything is dry, turn on the panel again and check if the hob will work.

Diagram of the structure of the burner from an electric stove

When the spark plugs are sparkling yellow or orange, this is a sure sign that the power supply is broken. If you notice sparking of candles, then in this case you should disassemble the panel in order to get to the electronic filling of the device.It is necessary to act as follows:

Disconnect the hob from the mains.
Using a screwdriver and other tools at hand, remove the top cover.
Now disconnect the contacts from the power supply.

Thus, you can replace the block: just take the broken one and show it in the store to sales assistants who will offer a working part.

You can make sure that the problem is with the unit by turning on the hob in the dark. If the spark is blue, it means that the unit is working, if it is yellow or orange, it needs to be replaced.

Sparking yellow or orange light can also be due to oxidation of the candle stem. The problem is solved by replacing the defective part. It is worth noting that such problems are extremely rare and occur only where the concentration of moisture in the air exceeds all necessary standards for a long time.

It can also happen with too frequent transfusions. Particles of water can penetrate the inside of the panel, causing droplets to enter the wires or microcircuits. In this case, fast and high-quality drying will help, otherwise the candle rod may oxidize. Otherwise, the wires will coarse and can easily break, as a result of which you will have to completely replace the electronic filling of the hob.

The interior of the electric hob

Such problems are typical for hobs that have been used for a long time. The burners either light up for too long or go out after releasing the handle. This type of problem is caused by a clogged thermocouple. This mechanism is responsible for supplying gas to the burner. If the burners go out quickly, disassemble the burners, find the thermocouple and clean with the help of the handy items. A regular wire, needle or knife will do.

If the measures taken do not bring the desired effect, then perhaps the reason is a malfunction of the thermocouple itself or the magnetic valve. These parts will have to be replaced.

The induction model is considered one of the most high-tech and advanced on the world market. However, she is also not immune to all kinds of problems. Often, the heating quality of a particular dish depends on its type. So the hotplate does not turn on. Problems can be as follows:

They turned on the panel, but as soon as the button was released, it went out. In this case, the cause is not at all a malfunction of the ignition. Many induction hobs have a safety mechanism that reacts to the diameter or type of cookware on the hotplate. When you remove the cookware from the hotplate, it also turns off, and in this case nothing extraordinary will happen.
Interruptions when switching on the burners. This may be due to surface contamination. Salt is the most common cause of these problems. Wipe the surface with a damp cloth and dry the hob, after which the device will be completely at your disposal.
The hotplate does not turn on. In this case, all that remains is to disassemble the panel and check the contacts. If one of the wires or fuses burns out, then you will have to replace these parts with serviceable ones. The wires, if they are cut off, can be soldered on their own, but it is better to entrust such delicate work to professional craftsmen.

The interior of an induction hob

In this case, you do not have to figure out the reason for the sudden breakdown of the hob for a long time, since gas models have a rather uncomplicated and therefore intuitive design. Here, manufacturers use much less electronics and microcircuits, so repairing a gas hob, if it does not ignite, will be extremely simple.

If the burners do not light up or burn very weakly even at maximum settings, we repair the equipment according to the following scheme:

Check the cooking zones for clogging, especially the electric ignition.
If you find a lot of fluid or debris stagnant, try cleaning with a needle or fine, sharp stick.

In most cases, this will be sufficient. If the measures taken did not lead to the resumption of operation of the equipment, check the electrical circuit for serviceability.

The reason that the hob burners do not light can also be a delay or blockage of the gas flow. In this case, no repairs are required: just check the gas pipe.

If gas continues to flow when the tap is open, but the burners do not light up, clean the nozzles from debris or moisture. This can be done both with a long needle and with a cotton swab. To do this, follow these steps:

Remove the lid from the hotplate.
Carefully detach the burner from the stove.
We insert the sharp tip of a needle, an unbent paper clip or wire into the nozzle and carefully remove all stagnant debris: food particles, burn marks and other contaminants.

Now it remains to check how well the gas supply works. Remember: you cannot test without putting the iron cover from the burner in its place. The main thing here is to carry out prophylaxis on time and to prevent over-boiling of the food being cooked, and most importantly, not to fill in the nozzles while washing the stove, when the residues of the cleaning agent, settling under the burners, cause a blockage.

The hob is one of the most important appliances in the kitchen, and, like any other technique, is prone to breakdowns, but making repairs with your own hands is quite simple. If a malfunction is discovered during the warranty period, your stove will be repaired free of charge. But if a breakdown occurs several years later, you can try to repair the hob with your own hands, since contacting specialists can cost a little less than buying a new stove.

In this article, our experts have listed all the malfunctions of the hob and step by step disassembled the process of repairing the malfunctions with their own hands.

The hob does not turn on - the most common malfunction of electrical panels, the device is plugged into the outlet, but does not work at all, or only one of the burners does not heat up. DIY repair can be disassembled into the following steps:

We check the voltage in the outlet; due to heavy loads, the contacts of the outlet often burn out.
We check the plug and cord for mechanical damage - they can simply shorten or even break the chain. Most often, damage is observed at the points where the panel is plugged into the outlet. Found damage - we replace the cord.
We turn off the power, remove the fasteners and dismantle the surface from the tabletop. We disassemble the surface and move on to the next step.
We take a multimeter and check the transformer, the next step is to check the thermal fuse. In the absence of resistance, or if it differs significantly from that declared by the manufacturer, parts must be replaced, they are sold in many electronics stores.
One hotplate on the hob does not work - it is necessary to check all the wires, as well as their connections to the burners, thermostat, switches, control panel for the fact of an open circuit. If the malfunction is not visually visible, all the contacts are in place, we take a multimeter and check each connection.

If you do not have a multimeter, you can use an indicator screwdriver for repairs, with which you can check the presence of voltage on all parts of the circuit. We also recommend watching a video that will help you repair the hobs yourself.

See also - How to install the hob in the worktop with your own hands

The main malfunctions that users of electric hobs may encounter are as follows:

See also - How to connect the hob with your own hands

Although induction panels are the most modern and high-tech devices, they are also not immune to malfunctions. We will analyze the main malfunctions of induction panels, and what repairs you can try to do yourself.

The induction hob does not turn on or turns off immediately - most often this is a feature of this type of panel, and not a malfunction. The induction hob has a protective function, if you use the wrong diameter or material of the cookware, the hob will automatically turn off the power, and the hotplate will not heat up. Also, the hotplate will turn off automatically if you remove the dishes from the surface.
The induction hob heats up for a long time and weakly - again, we read the requirements for the dishes in the instructions. 90% of induction hob malfunctions are associated with the wrong cookware.
The induction hob turns on automaticallyalthough there is no cookware on the hotplate. Remove all metal objects and clean the salt from the stove, if this does not help, you have a problem in the control unit, it needs to be repaired or replaced. Better to contact the service.
The induction hob does not work... The principle of diagnostics and repair does not change, specialists first of all check the fuse. then they ring the entire chain for an open circuit and replace the burnt-out part.

The last type of cooking appliances is a gas surface. One of the simplest and easiest to repair with your own hands. Less electronics are used, so there are not many faults and everything is easily eliminated.

Gas does not ignite or ignites poorly. We immediately check the electric ignition (piezo) for the presence of blockage or liquid. In 90% of cases, it is enough to wash it thoroughly and dry it. If this does not help, we check the presence of electricity in the circuit leading to the piezo coil.
The gas hob does not turn on because gas does not flow to the burner. Repair of hobs in these cases is not needed, prevention is enough. We check the gas pipe, if the valve is open and there is gas in the system, proceed to check the nozzles. The clogging occurs with fat or food debris, it is enough to clean it. Do not forget to wipe dry after cleaning, moisture should not remain. If moisture remains, the piezo will not ignite.

Modern hobs are equipped with sensors for detecting faults and diagnostic modules, an error code appears on the screen. We find the code in the instructions and follow the specified recommendations to eliminate a specific malfunction. Use the forums, there you can find real reviews and experiences on DIY repair from specialists and other users, namely your model with detailed instructions and photos.

If we analyze all the malfunctions of hobs that may occur during operation, we can say with confidence that most of them can be repaired by hand.

Fuse blown
Contact broke
The chain is broken
Cable damage
Clogged stove, nozzles
The heating element broke
Sensor does not work

All these malfunctions are eliminated by hand, if you are faced with a more complex problem and are not sure of your knowledge and strength, contact the service center.

First, let's talk about how to repair an electric hob and what kind of malfunctions this version of the stove may have. Most often, owners are faced with a situation when the hob does not work or one of the burners does not heat up when the power is connected.

In this case, the repair is reduced to the fact that you need to perform the following steps:

Check the voltage at the outlet, because perhaps it was this electrical point that was out of order, as a result of which there is no power.
Carefully inspect the cord and plug for mechanical damage. Sometimes this is where the repair ends - you just need to replace the electrical plug or cord.
Remove the hob from the worktop by disconnecting all wires and unscrewing the fastening strips.
Use a multimeter to check the thermal fuse (pictured below) and the transformer. If there is no resistance or differs from the nominal, you need to replace the circuit elements with new ones.
Check all wire connections (on the control unit, switches, thermostat, burners) and make sure that there is no trivial open circuit. First, try to visually find the fault, and then use a multimeter to ring all sections of the circuit according to the diagram.

Often, finding a breakdown of an electric hob with your own hands is not difficult if you know how to handle a multimeter. In the absence of this device, you can use an indicator screwdriver, which will show the presence of voltage in a certain section of the circuit.

In addition, I would like to tell you why the hob may stop working, so that you know the cause of the malfunctions and how to repair each. So, among the main breakdowns, the following are most common:

The first option is a marriage from the manufacturer, sometimes it happens, as we saw from one of the reviews on the Internet, which said that the Ariston electric hob cracked by itself and the victim was replaced with a new one under warranty. However, another explanation of the malfunction is more common - improper operation, which is described in detail in the instructions for the technique. In the latter case, repairing the hob will be expensive and only through your fault.

Immediately, we recommend watching a visual video instruction, which shows how to properly repair an electrical surface:

If your induction hob does not work, there may also be several reasons for the malfunction. For your attention, an overview of the main faults and methods of repair on your own:

Repair instructions for an induction cooker are provided in the video:

Well, the last option for equipment that can fail is a gas stove. If your gas hob does not work, there are not many reasons for malfunctions. Usually problems arise with the piezoelectric element and the nozzle from which the gas is supplied.

So, to your attention, the causes of breakdowns and how to repair the hob with your own hands:

Pieza ignites poorly. In this case, check the electric ignition of the burner for blockages. If the ignition is really clogged, wash it and wipe it thoroughly with a dry cloth after washing.
Gas does not flow. First check to see if the tap on the gas pipe itself is closed. After that, get to the nozzle and check if it is clean. The reason why the gas can stop flowing or is supplied weakly is most often the contamination of the nozzle with fat or food. Repairing such a malfunction will not be difficult, the main thing is, after washing, thoroughly wipe off the water with a dry cloth.

These are all the main malfunctions of a gas hob. Sometimes incorrect operation can be caused by improper installation of kitchen appliances. We recommend that you familiarize yourself with how to properly connect an electric hob with your own hands!

In addition, it should be noted that most standard breakdowns can be indicated by a code on the display, with an additional intermittent signal sounding. This code is the name of the error, which can be found in the attached instructions. To repair here or another malfunction on an existing error, you can find it on the thematic forums and read the reviews of those who have already encountered this problem and, perhaps, know why the equipment beeps.

Finally, I would like to summarize that most often the electric hob does not work due to a fuse failure or a broken contact. The least often the control unit breaks down, which is already difficult to repair yourself.We hope that now you know why this technique breaks down and what to do for DIY repair!

Related materials:

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