Panasonic Microwave Child Lock / Key Symbol / LOCK error code

Difficulty: Easy · Cost: $0 · Duration: 1m

The child lock indicator — shown as a key symbol, the word LOCK, or the word Child on the display — is not an error code. It means the child safety lock feature has been activated, which disables all the control panel buttons to prevent accidental or unauthorised use. The door will still open but the microwave will not start. The exact method to deactivate child lock varies by model.

Common causes

Child lock was intentionally activated to prevent accidental use
Child lock buttons were accidentally pressed activating the feature

How to fix it

1

Method 1: Press Function, then press 5 to select CHILD LOCK ON/OFF, then press 2 to select CHILD LOCK OFF
2

Method 2 (Models NN-ST27HB, NN-ST27HW, NN-SE284): Tap the Stop/Reset key 3 times — the display returns to colon or time when child lock is cancelled
3

Method 3 (most models): Press Start or Start/Set 3 times within 10 seconds to toggle child lock on or off
4

Check your owner's manual for the exact method for your specific model