Frigidaire Microwave Error Code LOCK

LOCK on a Frigidaire microwave means the Child Lock feature is active and the control panel has been deactivated. When this feature is on, pressing any button will display LOCK instead of performing a function. This is a safety feature, not an error or malfunction. It can be cleared by entering a specific three-button sequence.

Unplugging the microwave may or may not clear the Child Lock depending on how the control board stores the lock state. The recommended and reliable method is to use the proper unlock sequence: Timer/Clock, then 1, then Clear/Off. Relying on a power reset is not guaranteed to work and the lock may return when power is restored.

If the LOCK display clears after entering the correct key sequence, there is no repair cost at all. If the control panel remains unresponsive after the correct sequence is entered, the issue may involve a faulty membrane keypad or control board. Keypad replacements typically range from $20 to $80 in parts, while control board replacements can range from $60 to $200 or more depending on the model, not including labor if a technician is hired.

To disable the Child Lock, press the Timer/Clock pad, then the number 1 pad, then the Clear/Off pad in that order. The LOCK indicator should disappear and the control panel will return to normal operation. If this sequence does not work, verify you are pressing the pads in the correct order without pausing too long between inputs.

No, the LOCK display is not a safety concern. It means the Child Lock feature is active, which is a built-in function designed to prevent accidental use. The microwave is not broken and poses no hazard in this state. Simply enter the unlock sequence to restore normal operation.