Please tell me how to unlock and Electrolux induction cooktop.

We aren't Electrolux, we are FixYa dot com, and you appear to have fixed it.

Resetting the board would simply involve cutting the power to it. Induction cooktops are a relatively new innovation to the home markets are in general, all Induction cooktops fail due to failing electrical components. I have a 50 year career in catering, and 10 years with induction units. Even the catering quality units with a single hob that cost $1,800 fail in 18 months to 2 years.

Contact Electrolux direct and ask if they can find the failed component and repair the board.

https://www.google.com/search?q=%E2%80%8BContact+Electrolux

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Good Afternoon friend, I appreciate your inquiry!

Typically on an Electrolux induction cooktop the "E4" error code stands for key sensor for timer. Which means you could be experiencing an issue with the right board, center board, or left board. I would perform a reset on your cooktop and you can do that by flipping the household circuit breaker off for ten minutes.

If that does not assist with clearing any false error codes or the error "E4" continues to display I would suggest seeking assistance from a professional for proper diagnosis and repair. Hopefully this helps. -Matt

Thank you for your post, friend!

I understand that your Electrolux cooktop is flashing an "E21" error code. Based off the information I was able to look up it sounds like a possible issue within the left board. I would suggest seeking assistance from a technician for proper repair because some of these intricate parts do require precision and patience. Therefore when replacing the exchange of electrical components or removing them from your appliance, I always suggest seeking professional assistance. -Matt

Thank you for your post, friend!
I located that on Electrolux Cooktop error codes "35" and "75" stand for input voltage too low. It could be an issue with your filter board or an issue within the voltages. I would recommend having a professional come out to your cooktop to properly diagnose to avoid any unnecessary part purchases. -Matt

Verify AC input voltage at the cooktop input. Verify AC main input cables, screws and jumpers. Verify the fuse resistance to be approximately 0 ohms on the Induction Module. Replace the Filter Board on the Induction Module.

What was the error code?

how to unlock ilve induction cooktop

Call Electrolux or go to their web site and explain the problem there tech department will be able to tell you if you need a service call or can fix yourself.