What is the fault of the electric wok eo, and what does the induction cooker mean when the eo appear

What is the problem with rice cooker e failure**?

The digital tube shows e0: the power-on delay protection circuit is faulty.

The principle of the induction cooker is the phenomenon of electromagnetic induction, that is, the alternating current is used to generate an alternating magnetic field that changes the direction through the coil, and a vortex current will appear inside the conductor in the alternating magnetic field (the reason can refer to Faraday's law of electromagnetic induction), which is caused by the movement of the carriers in the conductor (the electrons in the pot are not iron atoms) driven by the vortex electric field; The Joule heating effect of the vortex current heats up the conductor and thus heats up.

The induction cooker uses electromagnetic radiation to heat the pot, and the electromagnetic radiation generated by the coil disc when the ordinary induction cooker is working in addition to heating the pot body on the stove surface, there is also a part of the electromagnetic radiation that will be discharged from the induction cooker body and the pot body, and produce the so-called leakage electromagnetic radiation, which is the source of electromagnetic radiation that endangers human health.

The cause of the occurrence of e0 in the induction cooker.

The bottom of the wire coil and the IGBT temperature detection resistance are damaged, a solder joint at the bottom of the motherboard is soldered, and the 300V filter capacitor is poor, causing the main voltage to be too low and the voltage detected by the synchronous circuit is abnormal. The high-power resistor of the synchronous circuit is damaged or deteriorated (330k, 470k, or 820k resistor) causing the detection circuit to be abnormal.

The PWM pulse signal is abnormal and the pot is not checked. Focus on checking the synchronous circuit (LM339 foot peripheral components, such as: tapering capacitor (2A222J)), PWM drive pulse loop (between R12 and IGBT control pole, pay special attention to C9, C10), long line mildew and rust, will cause bad contact, but also cause unchecked pot.

The microprocessor MCU is damaged.

The EO of the induction cooker is not to pick up the pot, that is, there is something wrong with the stove, which is generally caused by the defective components such as 5UF large capacitor, high-voltage resistor, and IC block LM339.

Or the furnace is caused by moisture, put it in the sun to see and then try, if it doesn't work, repair it as soon as possible, so as to avoid other major problems again. Hope it helps.

Hello, the following provides you with the method of detecting the circuit.

First, the voltage detection circuit. The PC version automatically detects whether the home voltage is normal, for example, 230V higher or lower than 200V, and it will show a normal fault**.

Second, the current detection circuit. The current detection circuit is mainly to detect whether the current on the output high voltage side is normal. Circuits are usually formed by several large resistors connected in series.

3. Temperature detection circuit. The temperature detection circuit is mainly to detect the temperature of the furnace surface, or the temperature of the power tube. When the temperature is too high, it automatically protects the shutdown.

Fourth, start the vibrating soup circuit. When the starting oscillation circuit is faulty, it is the same as not putting the pot to alarm, and the oscillation circuit is faulty, relatively speaking, it is very difficult to repair.

The solution to the EO in the rice cooker is as follows:1. First of all, remove the four screws at the bottom of the pot, then open the bottom shell, and then find the two black god defeat lines according to the figure below, and gently pull them with your hands to see if they are broken, or use the ten thousand meters to test the internal resistance of the two lines.

2. Press these two positions as shown below to remove the lid of the inner lid.

3. Use a screwdriver.

Remove the Pi Li screws that come out of the six swim grips and trembles as shown below, the sensor is in this, and if there is a broken wire, you can connect it back by yourself.

Fault**: EO

Fault content: The bottom main sensor is open or short.

Cause of failure and troubleshooting:

1. First, check whether the temperature sensor terminal plug-in is loose or has poor contact.

2. Check whether the temperature sensor is faulty. The resistance value is measured by a multimeter, if it is infinite, it is an open circuit, if it is 0 ohms, it is a short circuit, and a new one needs to be replaced.

That's an error, just reset it and you're done.

1. Check whether the terminal plug-in of the temperature sensor is loose or in poor contact.

2. Check whether the temperature sensor is faulty, measure the resistance value with a multimeter, if it is infinite, it is an open circuit; If it is 0 ohms, it is a short circuit, and it is recommended to replace it with a new sensor.

3. Detect whether the connecting wire is short-circuited, if a short circuit is found, it is recommended to replace it and reconnect it, and do a good job of insulation.

General household appliances are equipped with ** to protect electrical appliances, in the process of use of the display failure **, it is recommended to repair in time to ensure the normal use of electrical appliances. If you can't solve it yourself, it is recommended to go to a special maintenance point for maintenance.

Hello answer. I am Mianmian is very happy to serve you, your question I have received, after reading will reply in time, after asking, because the list is too much will be answered in turn, will not not not answer, please be patient!

The cause of the failure of the EO in the rice cooker is the open or short circuit of the upper cover thermistor, and the solution is to replace the upper cover thermistor.

This one has to be repaired by a professional maintenance person.

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Electric pressure cooker. Almost every family has it. If, suddenly, one day, the pressure cooker is not heated, and the indicator light on the pressure cooker shows normal, it is estimated that more than 90% of people will take it for repair or throw it away as a bad pot.

If you do, you're in for a loss!

Here, let me tell you a "secret": there are one or two recoverable temperature fuses at the bottom of the inside of the electric pressure cooker, pay attention to the word "recoverable", that is, the fuse can be self-recovering. If the heating temperature of the rice cooker is too high due to some factor, the temperature fuse will automatically disconnect and stop heating, the temperature fuse here is different from the ordinary fuse (the ordinary fuse is disposable, and it cannot be recovered after disconnection), after disconnection, if the temperature returns to normal temperature and room temperature, according to the model and performance of the fuse, this self-recovery process may take a day or two, so if you encounter such a situation, as long as the pressure cooker does not have the smell of burning, and the indicator light shows normal, You don't have to worry, disconnect the power completely, don't reheat, let the rice cooker sit at room temperature for a day or two and then try again, and it will generally return to normal.

If you are in a hurry to send it for repair, then the maintenance brother will definitely be happy.

There is a possibility that the fuse will automatically disconnect: the inner pot and the bottom will be hot.

The disc contact is poor, and the inner pot is taken away just after exhausting, resulting in the heat dissipation of the heating chassis is not timely, and the chassis temperature is too high to make the fuse operate.

The electric pressure cooker appears EO, which is an abbreviation for Electromagnetic Overflow, which means "pot-free or unsuitable pot". Most of the time the lid is not covered properly or the sensor is faulty, if you confirm that the lid is covered, send it for repair.

Take the Supor rice cooker as an example. The reason why the Supor rice cooker shows E0 failure may be due to the failure of the sensor on the upper lid of the pot to sense the temperature, or the disconnection of the lead wire on the upper lid. It can be replaced or connected to the line to return to normal, and if it doesn't work, you can go to a professional maintenance point for maintenance.

Take the Supor rice cooker as an example. The Supor rice cooker shows an E0 fault, indicating that the temperature control is faulty. There are two reasons for this:

1. The sensor on the lid of the pot fails to sense the temperature.

2. The lead of the upper cover is broken.

Here's how to fix it:

Disassemble the machine to detect whether the resistance value of the sensor on the top of the pot is within the normal range, the normal room temperature is about 25 degrees, and the measurement resistance value is between 70k-100k. You can replace the new sensor with a new sensor according to the original model, and then measure whether the connection wire is broken, replace or reconnect the connection wire if there is an open circuit, and do a good job of insulation.

The above is an introduction to the content of the rice cooker EO.