Most induction cooktop problems come from the vessel, the power supply or the ventilation, and you can fix them in a few minutes without any tools. If the cooktop does not detect the pan, check the vessel with a magnet and centre it on the plate. If it switches off midway, let it cool, clear the vents and make sure the vessel is not empty. If it still fails, switch it off, unplug it and call service.
This guide covers induction cooktop problems and solutions one symptom at a time, answers whether an induction cooker is safe, explains the problems people have with induction hobs, and shows what you can safely check yourself before you repair or replace anything.
Quick fixes for the most common problems
|
Problem |
Most likely cause |
Quick fix |
|
Cooktop cannot detect the pan |
Vessel is not magnetic, too small or off-centre |
Magnet test the base, use a flat vessel that covers the plate and centre it |
|
Does not turn on |
No power, loose plug, or key lock on |
Try another socket, check the plug and unlock the panel if your model has a lock |
|
Switches off midway |
Overheating, blocked vents, empty vessel or a timer that ended |
Cool it, clear the vents, add food or water and check the timer |
|
Buzzing or humming |
Vessel base vibrating in the magnetic field |
Use a heavier, flat-bottomed vessel and lower the power |
|
Loud fan |
Cooling fan at work, or dust in the vents |
Normal when heating. Clean the vents if the noise is new |
|
Heats slowly or unevenly |
Warped base, wrong size vessel, or low voltage |
Use a flat vessel and check your supply |
|
Trips the MCB |
Overload on the circuit or an extension board |
Plug into a wall socket on a proper circuit and avoid other heavy loads |
|
Burning smell |
Food on the plate, spill near the vents, or dust burning off on first use |
Switch off, cool and clean. If it continues, stop using it and call service |
Why does my induction cooker not detect the pan?
This is the most common complaint. An induction cooktop only heats a vessel it can sense, and the sensor looks for a magnetic metal base of the right size. If it cannot find one, it beeps, shows an error or does nothing.
• Run the magnet test. Hold a fridge magnet to the bottom of the vessel. If it does not stick firmly, the vessel will not work. Aluminium, copper, glass and clay do not work, unless the base has a steel plate.
• Check the size. A very small vessel, such as a tiny tea pan, may be missed. Use one whose base covers a good part of the plate.
• Centre the vessel. An off-centre pan can fail to register, and it heats unevenly.
• Check the base. A warped, dented or rough base makes poor contact. Use a flat, smooth one.
• Clean the plate and the base. Burnt food or water between them can confuse the sensor.
Our Chefspecial Induction Cooktop 1600W has a vessel sensor that detects the wrong cookware and cuts the power. If it will not heat, the sensor is doing its job, and the vessel is the first thing to change.
Why does the cooktop switch off by itself?
• Overheating. Induction cooktops cut the power if they get too hot. Blocked vents, a cooktop on a soft surface or a very hot kitchen can cause this. Let it cool for 20 to 30 minutes, then clear the vents and try again.
• An empty or dry vessel. The cooktop senses that the vessel is heating too fast and switches off. Always cook with oil, water or food in the vessel.
• The timer ended. If you used the timer, the cooktop stops when the time is over. Our Chefspecial cooktop has a 0 to 3 hour timer.
• Voltage trouble. Low or fluctuating voltage can shut the cooktop down. Our Chefspecial has a high-rated IGBT that adapts to voltage fluctuations. If your supply is unstable, plug it into a different circuit and avoid sharing it with a geyser or an air conditioner.
• A touched key. A stray touch on the panel can switch it off. Press the power key and start again.
Why is my induction cooker making noise?
• Fan noise: The fan cools the electronics and runs harder on high power. It keeps running for a short while after you switch off, which is normal. If the noise is new or very loud, switch off and clean the vents with a dry brush.
• Humming or buzzing: The magnetic field makes some vessels vibrate, especially thin or lightweight ones, and it is louder on high power. Try a heavier, flat-bottomed vessel or a lower setting.
• Clicking: The cooktop adjusts power on and off at low levels, so a soft click is normal.
• Rattling: Check that the cooktop is on a flat surface and that nothing is loose under it.
Other problems and what they mean
The cooktop heats slowly
Check the vessel first. A thin, warped or undersized base heats slowly. Then check the voltage, since low supply slows heating. Use a lid to speed things up, and pick a higher power level.
The controls do not respond
Dry the panel and your fingers, since moisture can stop a touch panel from working. Check that no key lock is on. Switch the cooktop off at the wall for a minute, plug it back in and try again.
The cooktop trips the MCB
A 1600W cooktop draws high current. Plug it straight into a wall socket and do not run it with a geyser, an iron or a heater on the same line. If it trips every time, ask an electrician to check the wiring and the MCB rating.
There is an error code on the display
Error codes differ from brand to brand and model to model, so check the manual that came with your cooktop. Most relate to the vessel, overheating, or voltage. Switch it off, cool it down, check the vessel and the vents, and try again before you call service.
The plate is cracked or scratched
Stop using the cooktop at once and unplug it. A cracked plate can let liquid reach the electronics. Do not try to repair it yourself. Contact service.
Is an induction cooker safe?
Yes, for most people, when it is used the right way. An induction cooktop has no flame and no gas, and it heats only when a suitable vessel is on the plate. The plate itself stays cooler than a gas flame, and it switches the heating off when you lift the vessel.
Here are the points that matter for safety:
• Magnetic field. Induction cooktops produce a magnetic field, and in normal use it is weak at a normal cooking distance. It is strongest right at the plate and can be higher with the wrong kind of vessel or an off-centre pan, so use a suitable vessel, centre it and stand a little back from the front edge of the cooktop.
• Pacemakers. People with a pacemaker or similar implant should ask their doctor before using induction, and read the manual.
• Residual heat. The plate warms up from the vessel. Do not touch it while cooking or just after.
• Electrical safety. Use a wall socket, avoid extension boards and keep the cooktop away from water.
• Never leave cooking unattended, and keep children away.
How to repair an induction stove: what you can do and what you should not
People often ask how to repair an induction stove at home. Some checks are safe and quick. Anything inside the unit is not.
You can safely do these:
• Check the socket, plug and cable for damage, and try another socket.
• Test the vessel with a magnet and try a different one.
• Clean the plate and the vents with a dry or barely damp cloth.
• Switch off at the wall for a minute and restart.
• Check the timer and key lock settings.
Leave these to a service technician:
• Opening the body, touching the coil, fan or circuit board.
• Replacing the cracked plate, fuse or any internal part.
• Any problem with a burning smell, sparks, smoke or repeated tripping.
Opening an induction cooktop exposes high-voltage parts and may affect your warranty. If your cooktop is in warranty, such as our Chefspecial with its 1-year warranty, raise a Product Repair request through the online service form on our Contact Us page, and keep your invoice handy. If it is out of warranty, use a trained technician.
How can you prevent induction cooktop problems?
• Use flat, magnetic-base vessels that cover a good part of the plate.
• Never heat an empty vessel.
• Keep 10 to 15 cm free around the cooktop so the vents breathe.
• Wipe spills straight away and clean the vents with a dry brush now and then.
• Do not drag heavy vessels across the plate. Lift them.
• Plug into a wall socket, not an extension board.
• Let the fan finish before you unplug.
If you are looking at a new one, see our induction cooktop range.
FAQs
Q: Why does my induction cooktop beep and show an error?
A: Usually the vessel is the wrong type, too small or off-centre. Check it with a magnet, centre it and try again. If the error continues, check the manual for your model's code.
Q: Can an induction cooktop damage cookware?
A: It can warp a thin, cheap vessel that is heated empty or on high power. Use sturdy, flat-bottomed vessels and always keep food or liquid in them.
Q: Is the induction plate supposed to get hot?
A: It gets warm from the vessel's heat, but it is cooler than a gas flame or a coil. It stays warm for a while after cooking, so wait before you wipe it.
Q: Can I use an induction cooktop during a voltage drop?
A: A small drop is usually fine, but a big one slows heating or switches the cooktop off. A cooktop with voltage protection helps. If your supply is unstable, ask an electrician to check it.
Q: Why does my induction cooktop smell when it is new?
A: A faint smell can come from protective coatings or dust burning off on first use. It should fade after a few uses with the vents clear. If it does not, stop and call service.
Q: Are induction cookers safe for people with a pacemaker?
A: The field is low in normal use, but people with a pacemaker should check with their doctor and the manual before using an induction cooker.
