Do-it-yourself hotter air fryer repair video

Air fryer device

The convection oven is a modernized version of the household convection oven. Streams of air heated to high temperatures play an active role in cooking here. Structurally, a typical device of this type consists of:

volumetric glass bowl;
a quartz lamp with a grille enclosing it;
an electric fan responsible for air circulation inside the bowl and protecting the motor from overheating;
temperature controller sensor based on a bimetallic plate;
a control and data display unit, which includes a mechanical timer, a temperature control knob and a pair of lights indicating the state of the switched on equipment.

The operating principle of an air fryer is not much different from the operation of an ordinary iron. The quartz lamp gives off its energy to the circulating air and the food placed in the bowl. When the set temperature is reached, the regulator opens the electrical power supply circuit to the lamp. Repeated cycles of switching on and off make it possible to maintain the required heat treatment mode with sufficient accuracy for a period of time set by the timer.

Careful housewives, getting used to the operation of a new convection oven, try to determine the degree of readiness of a dish based on its appearance, which is facilitated by the transparent walls of the bowl. As you gain experience, the role of the timer becomes the main one.

Common problems with air fryers

Air fryer repair may be required in various situations. Despite all its apparent simplicity, its most vulnerable part is the electrical circuit. It consists of switches on the control unit and handle. From them, current is supplied through a timer to the winding of the fan motor.

Doesn't respond when turned on

The absence of a response from a household appliance when turned on indicates changes have occurred in the electrical circuit. The following are subject to inspection:

fork;
power cable;
a leaky closure blocker, which is usually located in the handle of the air fryer;
all internal components of the electrical circuit.

Any home craftsman can eliminate visible defects such as broken wires or disconnected contacts. Replacing failed electrical devices will require the purchase of similar parts, their correct installation and connection. With due care and precision, this should not cause serious problems either.

Most often, the convection oven does not turn on due to a broken fuse that blocks operation when the lid is open or not tightly closed. When you press a working device, you should hear a characteristic click.

If there is no sound, test it with a multimeter by connecting to the contacts or two wires suitable for it. When you press the microswitch, the tester should display a change in its resistance from infinity to zero. To replace the fuse, you will have to disassemble the air fryer cover.

Doesn't heat well

The absence of heating or its insufficient intensity indicates deviations in the operation of the heating element, which is a halogen heater for your convection oven or an ordinary heating element. In this case, it is necessary to inspect it for the presence of visible defects, to “ring” the device itself and the sections of the circuit leading to it. The heating device should be replaced with a similar one.

The fan doesn't spin

When an air fryer does not have a fan working, it loses all its operational benefits. Symptoms of such a malfunction are:

uneven heat treatment of food, expressed in the lower layers of the dish not being cooked;
absence of the characteristic sound of a running motor.

Sometimes the cause of failure is a broken wire or disconnected contact. If it turns out that the motor has failed, you will have to replace the motor or the entire set along with the fan.

The control unit has failed

A malfunction of the control unit may result in the inability to turn on the device or in its refusal to switch modes. The biggest problem is caused by the breakdown of touch devices . In this case, expensive equipment will need to be replaced by a professional technician.

Most of these faults can be corrected with your own hands when repairing an air fryer, but if you are not confident in your own abilities, contact a repair shop.

Be careful! Often, a carelessly inserted plug into an electrical outlet or a loosely closed lid can lead to unnecessary concerns about the performance of the air fryer.

Fan motor diagnostics

Typical malfunctions of the air fryer blowing system:

there is no airflow;
the fan hums when turned on;
a rumble or grinding sound is heard during operation;
air flow is too weak.

To check the fan, you need to continue disassembling the device. Unscrew the screws securing the bottom of the fan and the electric motor.

We inspect the electric motor.

One of the possible reasons why the motor and, accordingly, the fan rotates slowly or does not rotate at all, may be grease on its shaft. Once hardened, the fat interferes with the normal operation of the engine. This can be seen in the picture. That’s why you hear a hum: the engine cannot cope with the load and its winding begins to hum.

The accumulation of fat is removed with a rag, and the residue is washed off with gasoline, alcohol or another liquid that dissolves the oil. Simply removing fat from the shaft is not enough. The shaft needs to be lubricated. For this you will need Ciatim type machine oil.

In the absence of specialized oil, you can use Vaseline, but when heated it becomes liquid, flows off the shaft, and the operation will soon have to be repeated.

Rattling, grinding and other unpleasant sounds during operation can be caused by a faulty bearing on the motor shaft. The bearing is located on the back of the engine.

Most often, it is also a matter of thickened lubricant. By unscrewing the two mounting screws, you gain access to the bearing itself. As before, apply new lubricant inside it. We return the cover to its place and make several revolutions of the shaft with our hands to distribute the oil evenly.

All proposed operations make sense when the motor winding is not damaged . Therefore, during disassembly, we carefully examine the connecting wires for integrity. We call the motor winding terminals with a multimeter. A broken winding usually cannot be eliminated; the electric motor will need to be replaced.

DIY air fryer repair

If you are convinced that the connection is correct, that there is voltage in the socket and that the lid is tightly closed, but the convection oven refuses to follow your commands, you need to check the functionality of its electrical components. To do this, the entire electrical circuit and its individual sections are “tested” with a multimeter in order to detect the source of the malfunction. During the inspection and to replace rejected components, you will have to disassemble the household device.

Disassembling the air fryer structure

How to properly disassemble an air fryer? Perform a series of simple operations sequentially:

Make sure that the appliance plug is unplugged from the socket;
Unscrew several screws and remove the quartz lamp grille;
Remove the outer fan impeller;
Remove all partitions that prevent access to the motor and quartz lamp;
Disconnect the wire connectors of the faulty element and replace it.

Before assembling the repaired convection oven, make sure that the contacts of the replaced part are secure. Assembly is carried out in reverse order and ends with operational tests.

Replacing an element

If the heating element fails, replace it with a new part of the same design and power. To do this, you completely disassemble the device, insert and fix the spare part purchased in the store using available fasteners, carefully make all connections and reassemble the air fryer.

Checking the limit switch

The limit switch on the lid was mentioned earlier. To get to it, you will have to disassemble the entire body. But you can check its serviceability in another way. To do this, you need to determine which wires go to it from the printed circuit board. This is not at all difficult: two conductors go in his direction. We disconnect them from the electrical circuit board and connect a multimeter to them. When you press the limit switch, the resistance on the tester display should change from infinity to zero. Otherwise, the limit switch is faulty and needs to be replaced.

Possible malfunctions of a fairly cheap Hotter model are discussed above. Similar manipulations can revive similar convection ovens from Supra. Expensive convection ovens have a more complex structure; they are controlled by electronic circuits, so it is better to repair them in service centers, although you can try to fix some of the faults listed above yourself.

Source

Design features of the air fryer

An air fryer is a kind of oven with air draft, a mixture of a heater and a fan. A special grille performs the function of a heating element, which in turn is blown by air currents. The primary heat source is an infrared lamp. All these important parts are separated from the glass bowl where the food is placed.

The design usually consists of several elements:

sealed glass bowl;
a quartz lamp, covered with a grille and slightly lowered inside the bowl;
a fan consisting of lower and upper blades (the lower ones work to blow food, and the upper ones cool the motor);
partitions between the blades with holes for air exhaust;
bimetallic plate for temperature control;
control unit and display system.

The lid is usually equipped with a functional handle that completely cuts off the power when opened. Cooking begins only when the appliance is hermetically sealed. Problems may be associated with the listed elements, so repairing an air fryer with your own hands often begins with diagnostics.

Common Problems

Any DIY repair to an electric grill or similar device requires familiarity with the internal workings. The electrical circuit consists of a switch on the cover and handle. From it, a signal goes through a timer to the motor that starts the fan. Relays and quartz lamps are connected in a parallel circuit.

We often encounter the following problems:

the device does not turn on and does not respond to control;
The device heats up poorly;
The air fryer fan does not spin;
The main control unit is broken.

Typically, a chicken carcass weighing about 1.5 kg is cooked in about 1 hour. The degree of readiness can be observed through the transparent walls. If the time period increases noticeably, this indicates possible malfunctions. There are also other problems - the convection oven simply does not respond to pressing buttons or other malfunctions occur. But your device can still be repaired.

The control unit has failed

Well, the last, most complex malfunction is when the control unit - timer, thermostat, power button or mode switching - does not work. In this case, the opposite situation may even occur when the convection oven does not turn off. Most often, this situation occurs with touch screens; although they are convenient, they are more susceptible to breakdowns and expensive repairs.

The only thing you can do is check the integrity of the contacts and ring the touch panel with a tester. If it really doesn’t work, the repair will be beyond the capabilities of a novice electrician, so you will have to take the equipment to a service center. Don’t be afraid, because the situation when the convection oven does not work due to a malfunction of the control unit is very rare and only occurs if you bought a cheap Chinese model of the device.

So we have listed all the most popular malfunctions of this type of household appliances. As you can see, it is quite possible to repair an air fryer with your own hands, so if the device does not work, now you know what to do to repair it yourself!

How to replace the air fryer fuse with your own hands Review of existing models

Quick DIY air fryer repair

If the heating element fails, you can simply buy a new heating element. A regular steel model is inexpensive and can last for ten years. However, the disadvantages include slow heating and high energy costs. You can spend a little more but buy more efficient carbon or halogen heaters.

If the problem is with the thermal fuse, then usually the convection oven does not turn on at all. A short-term power surge in the network often leads to this problem. Although, before taking serious measures, it is better to also check the outlet and wiring.

Disassembling the air fryer with your own hands is carried out in several stages:

the quartz lamp grille is unscrewed;
the lower fan blades are dismantled;
the partition between the blades is removed;
the upper “cage” is removed (the motor of the device opens behind it);
the quartz lamp is removed, attached with brackets to the partition;
If you need to replace a quartz lamp, you need to remove the cable connectors.

Before starting work, you should carefully inspect the air fryer body and find all the screws that are hidden in deep grooves or behind decorative plugs.

The steel blades should be removed from the back, where the grip nut is usually located. This will be much more convenient and safer.

Don't forget that before you start repairing your air fryer, do a full diagnostic. There are several reasons that can be confusing:

the socket is out of order;
the device is incorrectly configured or the wrong mode is selected;
The lid is not closed all the way.

Sometimes it is cheaper to replace one or another part than to buy a new convection oven. You can repair it yourself quickly and efficiently.

See also -

Which is better, an air fryer or a slow cooker?

When you find that your air fryer does not start working, do not rush to call the repair shop. There are many minor problems that the owner can detect and fix. If you know how to hold a screwdriver, reading this article will help you save on minor repairs and avoid serious damage to any representative of this type of household appliance.

Doesn't heat well

If the convection oven does not heat up or only heats up weakly from below, we can say with confidence that the heating element is not working. The cause of the malfunction may be wear of the heating element at the end of its service life or an open circuit. In the latter case, you can try to repair the damaged area, but according to many reviews on the Internet, it is easier to buy a new part than to spend more than one hour on repairs.

By the way, it should immediately be noted that more often the heating element in the form of a halogen lamp fails, the service life of which is already 2 years compared to the 10 years of a metal heating element. If the lamp under the cover does not heat, you should not replace it with the same one. It would be much more correct to replace the heating element yourself with a metal one. In this case, you will need to dismantle the protective grille, remove the brackets, unscrew the heater and disconnect the wires. After replacement, the parts are assembled in the reverse order. As you can see, you can repair a convection oven with your own hands, which does not gain temperature, without any specific knowledge in electrical engineering!

Air fryer device

volumetric glass bowl;
a quartz lamp with a grille enclosing it;
an electric fan responsible for air circulation inside the bowl and protecting the motor from overheating;
temperature controller sensor based on a bimetallic plate;
a control and data display unit, which includes a mechanical timer, a temperature control knob and a pair of lights indicating the state of the switched on equipment.

Common problems with air fryers

Doesn't respond when turned on

The absence of a response from a household appliance when turned on indicates changes have occurred in the electrical circuit. The following are subject to inspection:

fork;
power cable;
a leaky closure blocker, which is usually located in the handle of the air fryer;
all internal components of the electrical circuit.

DIY air fryer repair

Disassembling the air fryer structure

How to properly disassemble an air fryer? Perform a series of simple operations sequentially:

Make sure that the appliance plug is unplugged from the socket;
Unscrew several screws and remove the quartz lamp grille;
Remove the outer fan impeller;
Remove all partitions that prevent access to the motor and quartz lamp;
Disconnect the wire connectors of the faulty element and replace it.

Before assembling the repaired convection oven, make sure that the contacts of the replaced part are secure. Assembly is carried out in reverse order and ends with operational tests.

Replacing an element

If a hologen was initially installed in the convection oven, you can try replacing it with a heating element with a spiral. Its advantage is a larger working resource. The lamp is designed for a couple of years of uninterrupted operation under standard conditions. The service life of a high-quality heating element without replacement is five times longer. Another advantage of this option is maintainability.

If the problem is related to a broken spiral, it can be repaired. But this is acceptable in cases where there is no working analogue. A refurbished spiral will not last long, plus its repair will take a lot of time.

Therefore, in both cases, it is recommended to immediately replace the faulty part and check the repaired convection oven for heating.