Shang Pengtang induction cooker does not heat, the resistance is fine, the capacitor is fine. 339 is

How to choose the right power electromagnetic induction heater? 1. The shape and size of the workpiece to be heated: the workpiece is large, the bar material, and the solid material should be selected with high relative power and low frequency. For small workpieces, pipes, plates, gears, etc., electromagnetic induction heaters with low relative power and high frequency are selected.

2. The depth and area that need to be heated: the heating depth is deep, the area is large, and the overall heating should be selected, and the induction heating equipment with high power and low frequency should be selected; The heating depth is shallow, the area is small, the local heating, the electromagnetic induction heating equipment with low relative power and high frequency is selected. 3. Required heating speed:

The heating speed required is fast, and the induction heating equipment with relatively high power and relatively high frequency should be selected. 4. Process requirements: Generally speaking, quenching, welding and other processes can be selected with smaller power and higher frequency; ...

If the display board cannot be displayed, repair the display board, and if the display board can display, repair the CPU and its surrounding circuits.

It must be that the IGBT is broken, and it must be good to replace it!

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Induction cooker is a more common electrical product in daily life, it can be used for stir-frying, soup or hot pot, and even some can be said to be the survival of the owner, once there is a failure situation, it will affect life very much. So, what are the reasons why Shang Pengtang induction cooker does not heat? What do I need to pay attention to when using an induction cooker?

Let's take a brief look at it for you.

1. The reason why the induction cooker does not heat up.

1. When the temperature sensor is in an open circuit state, the Shangpengtang induction cooker cannot achieve the heating effect, and the partition time can be restarted; 2. When the sensor fails, the Shangpengtang induction cooker cannot be heated, and it should be sent to a professional maintenance fiber concession point for maintenance; 3. When the pot is used improperly, Shang Pengtang induction cooker will automatically identify the pin and stop the heating action, and it is recommended to replace it with the correct pot.

2. Precautions for using induction cooker.

1. Keep away from other electronic products.

When using the induction cooker, it is necessary to pay attention to stay away from other electronic products, especially mobile phones, because now many young owners, mobile phones do not leave their hands, when the induction cooker is in a heating situation, the mobile phone is in a long-term high temperature environment, there will be ** and other behaviors. In addition, products containing iron should not be too close to the induction cooker, because the high temperature for a long time can easily become the source of fire.

2. Pay attention to choosing the right pots and pans.

At present, the induction cooker on the market is relatively advanced, and the functions and indicators will be relatively perfect, for example, if the user uses an unsuitable pot, the induction cooker will automatically identify and stop the heating action. In addition, when using an induction cooker, it is necessary to ensure that the position of the pot is flat, otherwise it is easy to cause the pot to deform.

Summary: The frequency of use of electric destruction of the electric furnace is very high in daily life, so the owner must choose a regular brand of products when purchasing, otherwise the quality can not be guaranteed, if you buy fake and shoddy products, it may also lead to problems such as home. The above reasons why Shang Pengtang's induction cooker does not heat up and the precautions for using the induction cooker are introduced here, I hope it will be helpful to you.

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Summary. Reasons why the induction cooker does not heat up:

1. Protection of internal factors and conditions of induction cooker:

1. Temperature sensor open circuit and short circuit protection: This kind of protection will force the induction cooker to shut down at work, and make the induction cooker be in a closed state before the fault is eliminated, any key will not work, and the induction cooker fault will be displayed**.

2. IGBT over-current protection: over-current protection forcibly reduces the output power or directly suspends the work, and starts again to enter the working state after a period of delay. This type of protection is accompanied by a phenomenon of "regular intermittent heating".

3. IGBT tube overvoltage protection: when the IGBT collector voltage rises for some reason and reaches the protection trigger condition, the overvoltage protection action forces the induction cooker to reduce the output power.

Hope mine can be helpful to you.

Shang Pengtang induction cooker shows normal operation and normal, but it is not heated. And after turning on the machine, it has been in working condition without putting the pot, and putting the pot is the same as not putting it.

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Reasons why the induction cooker does not heat up:

1. Protection of internal factors and conditions of induction cooker:

1. Temperature sensor open circuit and short circuit protection: This kind of protection will force the induction cooker to shut down at work, and make the induction cooker be in a closed state before the fault is eliminated, any key will not work, and the induction cooker fault will be displayed**.

2. IGBT over-current protection: over-current protection forcibly reduces the output power or directly suspends the work, and starts again to enter the working state after a period of delay. This type of protection is accompanied by a phenomenon of "regular intermittent heating".

3. IGBT tube overvoltage protection: when the IGBT collector voltage rises for some reason and reaches the protection trigger condition, the overvoltage protection action forces the induction cooker to reduce the output power.

Hope mine can be helpful to you.

Summary. 1) Check the switching power supply circuit. First, determine if there is 220 V AC voltage entering the CV52, and then check TL, D54 D57, R81, R13, R76, C59, C57, Q55, T2, C68, R74, Zd51, Q56, C46, D52, L2, D53, U2, Zd52, Q57, R70.

2) Check the CPU part circuit. Check whether the 8MHz crystal oscillator is damaged, and whether the D65, C64, R65, and CPU in the reset circuit are damaged.

What is the problem that the built-in double induction cooker is not energized and the switch is turned on and there is no response? Used for more than 10 years.

Hello, kiss the key to pick up fiercely, I am happy to answer your questions for this, I am your exclusive electronic answer teacher Zou Zou. Shang Pengtang embedded draft bridge into the double induction cooker is not energized, and the switch is turned on and there is no response, what is the problem, as follows, it has been used for more than ten years.

1) Check the cavity return switching power supply circuit. First determine that there is no 220 V AC voltage into CV52, and then check TL, D54 D57, R81, R13, R76, C59, C57, Q55, T2, C68, R74, Zd51, Book Stool Q56, C46, D52, L2, D53, U2, Zd52, Q57, R70. 2) Check the CPU part circuit.

Check whether the 8MHz crystal oscillator is damaged, and whether the D65, C64, R65, and CPU in the reset circuit are damaged.

Meaning to send it for repair?

Kiss, it's going to be repaired.

Friend, your problem should be that the membrane switch board is aging and peeling off (conductive paint), and the membrane switch board needs to be replaced, if it is a micro switch, it should be replaced all at one time (the electric soldering iron must be grounded!). If this action is not good, just replace the crystal oscillator.

Oh, yes! It's obvious that the conductive paint on the membrane switches of those commonly used keys in your induction cooker is badly peeling off, and the membrane switch plate must be replaced.

Fault Symptom Product Cause Maintenance Method.

1 Won't turn on (Press the power button and the indicator light won't light up.) ）

1) Bad keys.

2) The power cord wiring is loose.

3) The power cord is not energized.

4) The fuse blows.

5) Power crystal IGBT is bad.

6) Resonance capacitor C103 is bad.

7) Negative diode.

8) The transformer is broken, and there is no 18V output.

9) Bad substrate assembly.

1) Check and replace the key pads.

2) Reconnect.

3) Reconnect or replace.

4) Replacement.

5) Replacement.

6) Replacement.

7) Inspect and replace.

8) Check and replace.

9) Replacement.

2 Set the pot and the indicator light.

Bright, but not heated (

1) The reel is not locked.

2) Zener diode ZD101 is bad.

3) The substrate assembly is broken.

1) Lock the reel.

2) Change the Zener diode ZD101

3) Replace the substrate assembly.

3 The light is not on, and the fan rotates.

1) Poor plug-in of the LED slot.

2) Zener diode ZD2 is bad.

3) The substrate assembly is broken.

1) Replug or replace the LED board.

2) Change the voltage regulator diode ZD2

3) Replace the substrate assembly.

4 Heat, but the indicator light does not light up.

1) The LED diode is bad.

2) The LED substrate assembly is broken.

1) Change the LED diode.

2) Replace the LED substrate assembly.

5 The pot is not set, the indicator light is on, and it is not heated.

1) Thermistor wiring is loose or damaged.

2) Bad manifold LM339 or manifold TA8316 bad (3) Bad transformer plugging.

4) Bad substrate components.

1) Replug or replace the thermistor assembly.

2) Change to LM339 or TA8316

3) Check or change the main control IC

4) Replace the substrate assembly.

6 No change in power.

1) Adjustable resistor.

2) Heating: The thermostatic resistor is used incorrectly or short-circuited.

3) The main control IC is bad.

4) Bad substrate components.

1) Change the adjustable resistor.

2) Check the heating temperature resistance.

3) Check or change the main control IC

4) Substrate replacement or substrate component replacement.

7 The buzzer beeps for a long time.

1) Bad thermal switch, bad thermistor, bad main control IC.

2) Bad oscillator, bad transformer.

3) The substrate assembly is broken.

1) Heat exchanger thermistor main control IC

2) Change the oscillator, check or replace the transformer.

3) Inspect or replace the substrate assembly.

8 The pot is normal, but it flashes and makes a "ding" sound.

1) Pots and pans are at a critical point.

1) Replace the R104 resistance.

9 Set the pot and the light flashes.

1) Worse than the flow device CT.

2) The pot is wrong, not a standard pot.

3) IC1 IC6 R501 Adjustable Resistor Bad (1) Commutator CT

2) Use the right pots.

3) Check the corresponding device.

No way. This friend. You can see the circuit diagram.

You don't know how big the resistance is to use a table to measure? Even if you get the circuit diagram. That diagram could also be wrong.

Because a machine needs to modify many parameters from design to commissioning. The circuit diagram may not necessarily be modified synchronously. Because the engineers know about it and don't change it.

I know that several large companies in the industry have this phenomenon. The machine is online. The parameters on the circuit diagram do not match the actual situation.

There is moisture or oil stains on the touch control board, if it can be taken apart and cleaned with alcohol, the control board should solve the problem.