Darin's stove does not work; oven repair do it yourself
In detail: Darin's stove does not work; oven; DIY repair from a real master for the site my.housecope.com.
Message m4x1k »13 Mar 2018 00:42
transfor, thanks for the answer. The circuit is needed, because there is an assumption that the owner poked and misplaced the terminals. I want to be sure that everything is connected correctly.
It is possible to switch the switch to one illumination in the cabinet, but it does not work even in this position. Everything points to the regulator, but it looks without defects at all, nothing is melted, the springs are in place. I blame the owner that he did not fit the terminals correctly.
Message transfor »13 Mar 2018 00:50
Thanks to such a versatile energy as electricity, the popularity of electric stoves is growing. This site has an article on how to connect an electric stove, and this page describes common problems, methods of identifying and eliminating them.
In many cases, a home craftsman or an ordinary user can make repairs to the electric stove with his own hands, without resorting to expensive specialist services.
Electric cooking
Regardless of the model of the electric stove and the type of burners used, the identification of the cause of the failure of the electric stove should be carried out according to the following algorithm:
Check with a voltmeter for the presence of a supply voltage (it is possible that the circuit breaker on the stove connection line has tripped, the wiring is damaged, or the outlet is faulty;
Make sure that the plug and the power supply cord are in good working order - the glow of the control lamp or electronic indication on the control panel automatically excludes this malfunction;
Disassemble and check the power outlet
Troubleshooting the electric stove
Video (click to play).
The task of any repairman is localize the problem... Having gone through this algorithm step by step, you can repair the electric stove with your own hands, having a small set of tools available and having limited knowledge in electrical engineering.
The most important condition on which not only the successful repair of the electric stove depends, but also the safety of the master and those around him, is knowledge of the basics of electrical engineering and electrical safety. You also need to be confident in your abilities - some measurements will have to be made with the voltage turned on.
From the tools for disassembling the body of the electric stove, you will need screwdrivers with suitable tips, perhaps a set of keys, pliers. For work inside the case, depending on the detected malfunction, you will need a soldering iron, wire cutters, electrical tape or heat shrink tubing.
Repair tool kit
Sometimes it is possible to identify a problem only by visual inspection (carbon deposits on the contacts, or a soldered wire). But, practice shows that in most cases it is impossible to repair an electric stove without measuring instruments.
Inspect the connections to the terminals
The most acceptable would be to use a multimeter - a multifunctional measuring device, which should be used by any master dealing with electrical engineering. In some cases, you can get by with a voltage probe and a homemade continuity from a light bulb and a battery.
If the mains voltage is normal, and the stove suddenly stops working after switching on, then it is worth checking the outlet itself - perhaps it does not correspond to the power, or the contacts are worn out, and they spontaneously bend during the heating process.
There are cases that in electric stoves with mechanical regulators and burner power switches, the control lamp burned out long ago, and the stove itself stopped working properly much later. At this stage, without starting to disassemble the case, it is possible to identify a malfunction in the switches, including various burners and switching modes their work.
The two burners of the electric stove do not work
If it is found that some of the heaters are working, albeit not at full capacity, then the malfunction of the power cord can be excluded, and you need to look for problems in the switches or in the spirals of the burners.
It is unlikely that all burners will burn out at the same time (although this is possible if all heaters were running during a power surge). Therefore, if there is no response to manipulation of the switches, the voltage may not be supplied to the controls.
Since electric stoves and hobs come in a variety of shapes, sizes and designs, there is no way to describe them all in one article, so the user must independently figure out how to disassemble the case. But the presence of thermal insulation is common to all types of electric stoves and it is necessary to work with it very carefully.
Various designs of electric stoves
If the thermal insulation layer of the electric stove is significantly damaged, its energy efficiency will decrease, as well as the readings of the temperature sensors will change, which will entail the stove's malfunctioning in the future.
It must be remembered that it is necessary to work with glass wool thermal insulation only with thick gloves, and the asbestos dust of the thermal insulation gaskets of old electric stoves is harmful to health.
Having disassembled the body of the electric stove, it is necessary to study the internal structure of the equipment, determine the type of regulators, switches and heaters. It will be very handy to have in stock plate layout... But even without a circuit, knowing the basics of electrical engineering, you can understand the heater control system and identify the problem.
Attention, the following verification methods are contrary to the user's instructions, which prohibit turning on the electric stove when the case is disassembled, so you should be very careful!
If the electric cooker does not work at all, you should check for the presence of voltage at the input of the switches or the electronic control circuit. Imported electric stoves with an electronic control unit are vulnerable to power surges, and very often problems in them are not related to damage to the heating elements.
Electronic control unit for electric stove
If the power cord is OK, and the voltage is on, and the display does not light up, then the internal fuse of the electric stove control unit may have blown. But the indication of a working display does not always guarantee its performance - perhaps there was a breakdown in the power switching relays.
The most accessible way to check the control unit is to check the voltage supply to the terminals of the burner heaters. If the voltage comes in, but the heating element does not heat up, then you need to disconnect the electric stove from the outlet, then disconnect the terminals from the heating elements and ring them.
Checking the supply of voltage to the terminals of the coil of the burner
It will be safer if you first attach special crocodile clips to the terminals of the heating elements, which are put on the measuring probes, and then apply voltage. If only part of the burners is working, then it will be more expedient to ring the heaters first, and only then look for an open circuit in the power circuit. It must be remembered that heating elements can have several coils - the heating power is regulated by the way they are connected together.
If a burnout of the filament or a breakdown on the case is detected, the damaged heating element should replace.
If the stove is old, then it is worth replacing the burned out heaters with more advanced and economical ones.The best electric heaters have proven themselves for electric stoves.
If the continuity of the spirals did not reveal any malfunctions in them, then the cause should be sought in the control unit. As already mentioned, heating elements can have several built-in coils, which are switched using switches or electronic relays. In both cases, a large current flows through the contact groups, from which carbon deposits form on them.
Switch for operating modes of the electric stove
Let's say the heating element of an electric stove has two spirals: C1 and C2. For their switching, a three-position switch with three contacts can be used: K1, K2, K3.
Connection diagram of a heating element with two coils
When K3 is turned on, both spirals are connected in series and will work at half their capacity. When K2 is turned on, the C1 spiral will heat up at full strength. The maximum heating will be obtained with the simultaneous closure of K1 and K2 - two spirals will be connected in parallel. All other possible options are meaningless and should be excluded by the switch design itself.
To fix such a switch, you need to disassemble it and get to the contacts to clean them with sandpaper or a thin flat file. You also need to check the tension of the hold-down springs and the fit of the contacts. Cleaning the surfaces, tightening the springs, and bending the contacts will help fix the problem.