Midea s induction cooker is matched with Aishida non stick pan and cannot be heated. 5

The magnetic furnace is based on the principle of magnetic field induction eddy current heating, which uses an electric current to generate a magnetic field through the coil, and when the magnetic force in the magnetic field passes through the bottom of the iron-containing pot, countless small eddy currents will be generated, so that the pot itself will heat up at high speed, and then heat the food in the pot. The electromagnetic waves generated by the induction cooker when working are completely absorbed by the shielding layer at the bottom of the coil and the iron-containing pot on the top plate, which will not leak and is absolutely not harmful to human health.

Applicable pot-type containers.

1. Iron (enamel, cast pot, stainless iron) pot, stainless steel pot.

Note: The compound bottom pot must be dedicated to induction cooker.

2. The bottom diameter is less than 12cm, which is used according to different functions, such as frying, roasting, and frying should be separated from the air by 1cm for the best steaming and cooking, and the flat bottom is the best.

Ineligible pot containers:

1. Aluminum and copper are containers and pots made of materials.

2. The diameter of the bottom of the container is not more than 12cm.

3. The height of the convex and concave at the bottom of the container is greater than 2cm.

4. Stainless steel double-layer composite bottom pot (not for induction cooker).

So you need to consider whether there are other foreign objects on the bottom of the pot you are using.

You may be buying an aluminum pot, because you can only use iron or stainless steel pots and pans on the induction cooktop, and it must be flat-bottomed. Take an iron pot and try it to understand.

Lifting the coil up 2-4mm should solve your problem. Unload it yourself and see it, and you will understand it at a glance.

Is the pot resistance in the middle of the wire reel and the thermal conductive silicone (something that looks like white toothpaste) intact?

Not inspecting the pot and not being able to detect the pot are two different things.

One; For induction cookers that do not inspect the pot, I classify the common faults into the following three categories:

v The main voltage is too low due to poor filter capacitance, and the voltage detected by the synchronous circuit is abnormal.

2. The high-power resistance of the synchronous circuit deteriorates or the open circuit causes the detection circuit to be abnormal.

3. The PWM pulse signal is abnormal and the pot is not checked. (The method of checking the PWM pulse is simple, that is, find a small transformer, connect a light-emitting diode on the primary, put it on the heating plate of the induction cooker and turn it on

1. Find the base of the two drive tubes first, and then see which foot of LM339 is connected to it.

2. According to the internal block diagram of LM339, you can see the other two pins related to it, one of these two pins must be to the MCU, and the pin to the MCU is the input pin of the PWM pulse signal.

3. It is simple to find out the problem after the pin, and the next step is to disconnect the diode and then measure whether the PWM pulse signal output by the MCU is to determine the fault location. After this, there is no need to talk about other specific testing steps, and I believe that friends who have a little basic knowledge know how to check.

4. There is another key point, that is, (1 and 5 pins), 1 pin is related to the pin, if the voltage of the pin changes, then the voltage of the 1 pin will also change, and the PWM pulse signal will inevitably be affected. The most common problem is that the poor capacitance (2A222J) between the feet causes the pot to be unchecked.

Induction cooker does not check the pot:

Check the chip components resistor, capacitor. Is it normal?

Is the pot detection voltage of the secondary output of the transformer normal?

Is 300V voltage normal?

Is the main resonant capacitance normal?

Is the high-voltage step-down current-limiting resistor normal?

Is the microprocessor clock oscillating circuit normal?

Two; The pot cannot be detected;

1.Use the short-circuit gear of the resistance block to measure whether the forward and reverse resistance values of the IGBT G pole to ground are normal. If it is abnormal, the relevant deterioration element should be identified.

Most of the faults are 18 V regulator tube breakdown or deterioration. Q4 8850 Breakdown or Deterioration Q3 8050 Open circuit or deterioration.

3. Use a multimeter to check whether the 11-pin IGBT trigger signal of the single-chip microcomputer changes normally in the boot-on state. If it is abnormal, it is a defective microcontroller. If normal, the fault is mostly C13 102 capacitor failure or open circuit.

4. In addition, if there is a deterioration of the C3 capacitor, the pot will not be detected, and the coil may not be detected if the coil is open or the contact is not good

Four. Automatic shutdown (can't turn on).

Check whether the relevant circuit of the relevant circuit is deteriorated or open circuit, short circuit, etc. according to the fault**.