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For various reasons, after a period of use, your induction cooktop may encounter technical issues or accidental disruptions, hindering its normal operation. Swift resolution is crucial to restore the dining space for your family. Join Mytour Supermarket to explore the article below and quickly identify the issues to repair your induction cooktop.
Common Issues in Induction Cooktops and Effective Repairs
1. Fixing Induction Cooktop Not Heating Up or Powering On
This could be considered a classic example of technical issues with your induction cooker. When you're cooking and notice that the pot on the stove isn't boiling, even though the stove fan is running, and the lights of the function buttons are still on, several technical issues might be at play:
Unstable Voltage
The operation mechanism of the induction cooker relies solely on electricity. If the induction cooktop is not heating, it could be due to low or unstable voltage supplying energy to the stove. To fix this, check if your household power supply is compatible with the induction cooker. This is a plausible cause, especially when many imported or makeshift induction cookers have power sources that are too high, not suitable for the electrical standards in Vietnam.
Unstable voltage is a root cause for the induction cooker's failure to generate enough heat for cooking.
Failure in 5uF Power Filter Capacitor
After a period of usage, certain components within the induction cooker may experience malfunctions, including the 5uF power filter capacitor. If this component is faulty, the induction cooker continues to operate, but it doesn't heat due to a decrease in the capacitance of the capacitor. This results in low electrical energy, leading to minimal heat generation or no heat at all. The best approach is to regularly maintain and replace the power filter capacitor when signs of capacitor weakness appear.
The induction cooker still operates but doesn't heat, possibly due to a malfunction in the 5uF power filter capacitor.
Failure in IGBT Power Module
Another reason why your induction cooker continues running but doesn't heat up is due to a malfunction in the IGBT power module. This can be considered a crucial component, as a failure in this part can lead to blown fuses or tripped circuit breakers when connecting the induction cooker to the power source.
In mild cases where the IGBT is dead in open-circuit mode (CE open), the induction cooker will still light up, and the cooling fan will operate, but it won't heat the cooking utensils. This is a highly significant component in the induction cooker, and therefore, it should be replaced when experiencing CE open failures.
Failure in the IGBT power module is one of the common issues with induction cookers.
2. Repairing an Induction Cooker with Power Loss
If you're not encountering the issues mentioned above, the induction cooker losing power is also a commonly observed problem. In this case, you should check the 5uF power filter capacitor and IGBT power module to see if they are faulty. As mentioned earlier, these are two crucial components related to supplying power for the induction cooker to operate. If they are functioning normally, the power loss may be due to one of the following reasons, and further inspection is required.
Check the Fuse of the Induction Cooker
The induction cooker won't receive power if the fuse blows or breaks. If the fuse in your cooker is intact and not blown, you need to inspect and determine whether the induction cooker operates on pulse transformers or regular power sources. As the induction cooker typically operates on regular power before the pulse transformation, you need to check the primary side resistance. If the transformer is faulty, the resistance will not function.
The induction cooker not receiving power may be due to a blown or broken fuse.
Inspect the Induction Cooker IC
The power IC serves as the energy supply for the induction cooker to function, just as crucial as the IC in motorcycles and other device types. If the VIP22A IC in the induction cooker is faulty, it will cut off power to related components. When starting up, the cooker won't turn on because there's no electric current flowing through.
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3. The Induction Cooker Touch Controls Not Working
While cooking, if you're about to increase power or change the cooking mode and suddenly the touch controls become unresponsive, the issue may lie in the touch feature of the control panel. Let's explore the reasons causing your keypad to become stiff below.
Child Lock Activation
Due to having small children in the family, you often activate the child lock mode after each cooking session or when you're away. If in the next cooking session you forget to disable this mode, all touch buttons will inadvertently be locked, leading to your induction cooker becoming unresponsive. To address this issue, simply check if the child lock is activated. If it is, press and hold the lock button for about 3 to 5 seconds to deactivate this mode. If there's no dedicated button, hold the P (or L) icon for 3 seconds to turn off the child lock.
The induction cooker touch controls may not be working due to forgetting to turn off the child lock mode.
Wet Hands
At times, multitasking with cooking and washing vegetables may cause the touch panel to lose sensitivity. Therefore, make sure to dry your hands and the cooktop surface, avoiding water on the control area. Additionally, use only one finger, limit simultaneous button presses, and move to another function after completing the current one.
Food Spillage on the Control Panel
Accidentally spilling food on the control panel can press multiple buttons simultaneously, causing stiffness and failure to recognize the intended user function. To resolve this, simply clean it thoroughly with specialized tools, and it will be good to use again.
Power Supply Issues
If the control panel on the induction cooker can't press the Power button and there's no power, it's best to check the power source. The cause may be an overload issue leading to a blown fuse or a disrupted electrical circuit. If you lack experience, you can call in a professional for repairs for safety.
Stiff induction cooker touch controls may be due to a power loss.
Induction Cooker Circuit Shortage, Malfunction
If none of the above methods resolve your situation, it's highly likely that the induction cooker has a circuit shortage or malfunction. Various factors can lead to this situation, such as infrequent use causing moisture, circuit shortages, and malfunctions; immediately unplugging after cooking causing the cooling fan to stop functioning; obstruction of airflow space for heat dissipation, resulting in overheating.
Induction cooker experiences circuit shortage and malfunction, causing the touch controls on the control panel to be nonfunctional.
4. Induction Cooker Auto-Shutdown and Continuous On/Off
The occurrence of the induction cooker self-shutting down and continuously turning on/off can be attributed to various reasons. The most common scenario is the cooker turning on but then shutting off, which may be due to malfunctioning internal components, especially the resistor. The only solution is to disassemble the induction cooker and perform a thorough inspection. However, this requires specialized knowledge, so it's advisable to call in an expert for repairs.
If the cooker overheats or the cooktop is covered by cooking utensils, towels, fabric, or liquids like water, oil, or soup, it may result in the cooker automatically shutting off during use. When the cooker overheats, simply turn it off to let it cool for a few minutes, then turn it back on and continue using it as usual.
If there's liquid residue on the cooktop, turn off the cooker to let it cool, then use a dry cloth to wipe it clean. Avoid placing items like cooking utensils, towels, or fabric on the cooktop; simply remove them, and the cooker will resume operation.
The appliance may operate for approximately 30 seconds and then shut off. This is due to a malfunctioning cooling fan, causing the cooker to generate excessive heat without proper dissipation. To protect the internal components from damage, the cooker will automatically shut off for safety. The best course of action is to take it to the warranty center for fan replacement if still within the warranty period.
The Junger NKD22+ induction cooker has an automatic power-off function.
5. Fixing the Induction Cooker Not Recognizing Cookware
If the issue is not technical, it might be due to your cooking utensils affecting the normal operation of the induction cooker. Let's explore the reasons behind this.
Due to Pot Placement
Essentially, the induction cooker operates normally when the pot's base is not misaligned with the cooking zone's position. If misalignment occurs, the cooker won't detect the pot and will issue an error warning.
The pot's base misalignment with the cooking zone's position can cause the induction cooker not to recognize the pot.
Due to Incompatible Pot
Because induction cookers are very particular about pots, it's essential to select the right type of pot with materials compatible with the induction cooker to ensure proper functioning. Additionally, if the cooking pot is too small or too large compared to the cooking zone's diameter, it can lead to the cooker not recognizing the pot. Therefore, use professional cookware for induction cookers, with sizes suitable for the cooker, preferably pots and pans with a diameter over 10 cm.
Choose materials and pot sizes compatible with the induction cooker.
Due to Deformed Pot Bottom
If you're using the correct induction-friendly pot and have placed it in the correct position, but the cooker still alerts that it doesn't recognize the pot, check the pot's bottom for deformation. If it's deformed, replace it to avoid prolonged use affecting the sensors and circuit board of the cooker.
The pot's bottom may have deformed, causing the induction cooker not to recognize the pot.
Through this article, you've gained knowledge on how to repair induction cookers. Generally, high-quality imported induction cookers experience fewer issues. However, unbranded models tend to encounter such problems frequently.
It's essential to note that fixing these issues requires specialized knowledge and should be done by professionals. If your device is still under warranty, contact the warranty center for assistance. Attempting self-repair may cause further damage or result in warranty denial, so consider it carefully before proceeding.
