My Sony burner says "Child Lock" in the display and it won't function.

The L indicates that the child lock feature has been enabled. This ensures that the burners do not function while you clean the cook top and that a child can't turn on any burners.

The procedure depends on your cook top model. For some induction models, to toggle the child lock feature off, press the front right burner zone display and the booster function key (circle with a solid circle inside on the right of the selector zone) simultaneously. Then press the front right burner zone display again until the L disappears from the display.
See page 23 of the manual for the Delonghi DEIND804 available here: https://www.appliancesonline.com.au/public/manuals/Delonghi-DEIND804-Induction-Cooktop-User-Manual.pdf .

For an electric ceramic cooktop DTCH808, to turn off the child lock completely, press the bottom right + in a circle and the - in a circle (in the center surrounded by 4 of the + in a circle areas) simultaneously and then release the keys. Press the - in a circle again. See page 21 of the manual here: https://www.delonghi.com/Global/InstructionManuals/EN/EN-DTCH80B_im.pdf .

I hope this helps. Please add a comment with the model of your Delonghi cook top if these instructions do not apply to your cook top.

Cindy Wells

Here is a section of the manual for your microwave on child lock, hope this helps.
"L" - Page 7 Press and hold STOP/CLEAR until " L " appears on the display and a BEEP sound is heard. The CHILD LOCK is now set. The time will disappear on the display . To cancel CHILD LOCK press and hold STOP/CLEAR until " L " disappears. You will hear a BEEP when it's released. If any button is pressed, "L" will appear on the display Your oven has a safety feature that prevents accidental running of the oven. Once the child lock is set, you will be unable to use any functions and no cooking can take place. However your child can still open the oven door. Press STOP/CLEAR. Child Lock 7

Have switched this on?

Child-proof lock
? You can protect the appliance from being tampered by activating the child-proof lock.
? When activated, no change can be made to the programme running.
To activate the child-proof lock:
1 Press the 1st and 2nd additional function buttons for 3 seconds.
2 The "C ON" (child lock is activated) symbol appears on the screen.
Note: the child lock symbol will also be displayed whenever any button is pressed while the
machine is child-locked.
3 The child-proof lock lamp on the programme follow-up indicator will light up when the childproof lock is activated.
To deactivate the child-proof lock:
1 Press the 1st and 2nd additional function buttons for 3 seconds.
2 The "C OFF" (child-proof lock is deactivated) symbol appears on the screen.
3 The child-proof lock lamp on the programme follow-up indicator will go off when the child-proof
lock is deactivated.

Once again a simple GOOGLE search, and the first thing on the list is the manual for this unit!

I suspect this is what you need.

Deactivating the Buttons on the Unit
(Child Lock)
You can deactivate the buttons on the unit
(except for on/off) for preventing misoperation, such as child mischief.
Hold down
(stop/square black button)
on the unit for more than 5 seconds."LOCKED" appears in the front panel display.
The child lock function is activated and the buttons on the unit are locked. (You can operate the system by using the remote control.)
To cancel, hold down
(stop/square black button)
for more than 5 seconds until "UNLOCK" appears in the front panel display.

If that's not the problem, here's the link for the manual.

http://pdf.crse.com/manuals/4446734151.pdf

Maybe you press lock button, simply unlock it again try this one
? What is the "Child Lock" function?
• If you press the "Child Lock" button (Spin+Option button) longer than 2 sec during operation, this
function is selected.
• If once this function is selected, no change can be done until the end of laundry.
• Press the "Child Lock" button (Spin+Option button) longer than 2 sec to cancel the function

If the previous user never used a child lock function, how do this now activated? Anyway, to reset this set, you have to know about the child lock code. There is some details about, how to unlock the child lock, its repair manual will have the procedure. Check this link. It has details about these matters to many brand TVs. http://electronicshelponline.blogspot.com/ Pull up older posts there, either by its left side bar, or see it in Timslide option.

Press {Stop/reset} button 3 times to unlock the unit. Or un-plug it for a little while. To put the unit into child lock press the start button 3 times.

hello You can deactivate the buttons on the unit
(except for "/1) for preventing misoperation,
such as child mischief (child lock function).
When the child lock function is activated, the
buttons on the unit are locked and “ ” lights
up in the front panel display. (You can operate
the system by using the remote.)
Note
•When you operate the buttons on the unit while the
child lock function is on, “CHILD LOCK” appears in
the front panel display.
1 Press SYSTEM MENU.
2 Press X/x repeatedly until “CHILD
LOCK” appears in the front panel
display, then press or c.
3 Press X/x to select a setting.
The default setting is underlined.
• “OFF”: Child lock function off.
• “ON”: Child lock function on.
4 Press .
The setting is made.
5 Press SYSTEM MENU.
The system menu turns off.
Tip
• You can activate the child lock function by pressing
x for more than 5 seconds (“ ” lights up in the
front panel display).
To cancel, press x for more than 5 seconds so that
“ ” disappears from the front panel display.
Deactivating the Buttons
on the Unit good luck

shaun

Press STOP button for more then 5 seconds to cancel child-lock function.

To turn off the child lock,press and hold the F key and press MUTE.