Repair of gas ovens: an overview of the main breakdowns of gas ovens and recommendations for repair

Vasily Borutsky
Checked by a specialist: Vasily Borutsky
Author: Oleg Sysoev
Last update: November 2019

Oven - a special technique. The hostess for a long time chooses the device "for herself" and is glad when all the stated parameters live up to expectations. But high-quality performance does not get rid of troubles: the devices have their weak points, breakdowns periodically happen. Full independent repair of gas ovens is unacceptable: the warranty is lost, and there is a danger to life and health.

At the same time, there is a list of popular malfunctions that block the operation of the burners, but are not related to the gas supply to them or larger problems. They are easily eliminated with their own hands. Consider such moments when with a minimum set of tools you can return the device to working condition. And in some cases, you still need the help of a specialist from the gas service.

The general principle of the oven

It is impossible to diagnose a failure without familiarizing yourself with the principle of the oven.

In older models, gas was supplied to the burner from two pipes placed along the side walls. Such ovens were set on fire manual way - a pipe from a newspaper. The safety of their work was ensured by free gaps on the sides of the unit and an open bottom opening.

Modern models are equipped with profiled round burners and gas control systems. Some devices have electric ignition, grill, convection option, which suggests the presence of a fan, a heating element.

The most moody part of the design of the oven is ignition.

Oven ignition and thermocouple
When we turn the knob or press the auto ignition button, a spark goes to the burner. A thermocouple is located next to the ignition system. She is included in gas control

The main problems of the oven are determined by the following symptoms:

  • gas stopped burning;
  • ignition does not work immediately;
  • the flame differs from the usual uneven color or burning;
  • during operation, the device is noisy, an odor is heard.

Having found something similar, turn off the gas supply. Next, we examine the device for the presence of foreign objects: pieces of food and other garbage. If necessary, carry out cleaning.

Useful check performance and the position of all valves. Periodically, they need cleaning and lubrication. We also pay attention to the condition of the landing hole. When it is destroyed, the part is easier to replace than to repair.

Oven control unit
Problems in the operation of touch panels are associated with breakdowns of individual elements or the entire unit. This is due to moisture entering the mechanism, rupture of the connecting cable. Part replacement required

If everything is in order with the cleanliness and condition of the control unit, we proceed to check individual structural elements.

5 main oven malfunctions

When the fire goes out thermocouple blocks gas supply. To warm up and activate the device, hold the ignition button for several seconds. After which we set the temperature, warm the cabinet and start cooking.

If the oven in the gas stove does not work for no apparent reason, this is due to a breakdown in the ignition, gas valve or other parts of the structure. We will deal with the problems in order.

Breakage # 1 - Thermocouple gas blockage

Mechanism gas control It functions due to the generation of a thermocouple energy charge, which is distributed through the wire to the electromagnetic valve. The latter expands under the influence of an electromagnetic field.

Burnt thermocouple oven
The thermocouple may not have enough heat due to misalignment or contamination of the tip of the device. As a result, it does not heat up, the valve does not open, the flame goes out. Or the design is worn out under the influence of natural factors

In most cases, a complete replacement of the element, which only gas service specialists.

It is only recommended that you try to clean the tip head with sandpaper. This will help if the flame is on when the button is pressed and goes out when it is released.

Breakdown # 2 - Calibration of the safety thermostat

This regulator controls temperature condition in the closet. When necessary, it turns the feed off or on.

Gas oven thermostat
The thermostat is controlled by a knob with the values ​​printed on it. The simplicity of the device does not save from breakdowns. If there are comments about burnt or raw food, the problem is in this element.

To check the operation of the thermostat, you need to set the value to 150 degrees on the scale. Inside the cabinet we place a mechanical thermometer in a metal casing. It is inexpensive, but it helps to identify a malfunction.

Then we turn on the oven and after 25 minutes we compare the indicators - whether the cabinet has warmed up to 150 degrees. If the discrepancies are limited within 5 degrees, the element is in good condition and the cause of the breakdown is not in it.

If the temperature difference is more than 5 degrees, you need to replace the thermostat, for which:

  1. We buy a new part for the desired model of the oven.
  2. Remove the adjustment knob from the control panel of the device.
  3. Weaken the bolts of the element.
  4. We photograph the wiring diagram and turn it off.
  5. We take out the thermostat and change it to a new one.

We repeat the algorithm in the reverse order: connect the wiring, fix the bolts, insert the handle. Do not forget to test the new part in the same way as checking the old one.

The described actions apply to mechanical and electric thermostats. But figure out how to fix it electronic high-tech sensor in a gas oven, only a specialist will help.

Breakage # 3 - the door does not fit well

There are two cases - loose and tight fit oven doors. In the first situation, heat is lost, the cooking process is delayed for an indefinite period.

Oven door is loose
The door does not fit snugly due to wear on the gasket or loose mounts.The latter are simply pulled with a suitable screwdriver

If the problem is with the seal, replace it. Why do we remove the door from the hinges, remove the old gasket, clean the gutter with a solution of laundry soap or detergent and install a new seal.

The intermittent ignition sometimes leads to a tight fit of the door. The lack of oxygen complicates the combustion process and the flame goes out. Technological gaps prevent this.

Breakage # 4 - Burner Blockage or Malfunction

If the burner lights up, take a look at the color of the flame. Blue indicates a normal combustion process. A red, orange hue signals troubles. We recommend that you familiarize yourself with the factors that influence flame color.

Smoked Gas Oven
Incorrect operation of the burner leads to soot settling and negative consequences for the health of users. A layer of soot can provoke a fire.

Change in flame color - an indicator of insufficient air quantity in a cabinet for burning gas or evidence of incomplete combustion of fuel. Here you need the help of a specialist.

Another point - clogged nozzles. The remnants of food and detergents periodically fall into them, the products of fuel combustion accumulate.

Nozzles are cleaned with toothpicks or wooden sticks. Metal tools cannot be used.

Breakage # 5 - breakage of the heating coil

Ovens with convection complemented by electric heaters. Sometimes the breakdown is connected with them.

If the spiral does not work, it must be replaced. A new part is bought at an electronics store.

To replace:

  • remove the back wall of the case, open the core of the device;
  • we release the element from the clamps;
  • remove the ceramic insulator - porcelain beads that are strung on a new heater;
  • insert a new part into the grooves and assemble the oven.

Each step is recommended to take pictures in order to avoid errors during reassembly.

Breakdown Prevention Tips

To understand why your gas oven has broken, you need to carefully and carefully treat the cleanliness of the surfaces of the device and its elements.

Follow the manufacturer's recommendations, adhere to temperature conditions when cooking, baking.

We block the gas valve
Sometimes the oven does not work for obvious reasons that are simply forgotten. Examples: the gas valve is shut off, the lights are off, repairs are being carried out in the house

All users of gas equipment after proper installation and connecting oven must comply with safety rules when operating gas-powered appliances.

They are as follows:

  1. Before you turn on the stove for the first time, be sure to undergo instruction and read the instructions.
  2. Do not leave a burning oven without control.
  3. If the fire goes out, first turn off the burner tap and then try to light the burner again.
  4. The oven must be kept clean. Perform a full cleaning at least once a week. Manufacturers recommend doing this after each use.
  5. Important and regular service maintenance gas oven and stove.
  6. It is unacceptable to make any changes to the design of the device yourself.

If a leak occurs, turn off the feed valve and call the emergency service. Using the devices before the arrival of specialists is prohibited.

We wrote more about gas leak detection methods in this stuff.

Conclusions and useful video on the topic

Gas monitoring device: principle of operation, turning off the supply.

Repair of the oven door.

How to remove and clean the valves.

Gas is flammable and explodes. The media covers hundreds of dangerous situations, many of which are associated with self-repair of equipment. It’s one thing to remove contamination, remove and clean the handles, adjust the door. Quite another is the replacement of a thermocouple, a control unit.

If you are not sure of your experience or don’t have the right tools at hand, entrust the specialists to solve problems. They will quickly determine why the oven doesn’t turn on or work poorly in the gas stove, and will troubleshoot.

Have you encountered breakdowns in your favorite oven or are you professionally repairing ovens? Share your experience and professional secrets with other users - your recommendations will be of interest to many beginners. Write your comments and tips, add original repair photos, participate in discussions - the feedback form is located below.

Was the article helpful?
Thanks for your feedback!
No (12)
Thanks for your feedback!
Yes (74)