Microwave displays LOC or a lock icon and will not start; keypad appears disabled.

Safety: No internal repair is needed for this condition.

Disable child lock:

• On most Commercial Chef microwaves, press and hold the STOP/CLEAR button for 3–5 seconds until the LOC indicator disappears.
• On some models, press and hold the 0 or LOCK key for several seconds to toggle the lock.
• Consult your specific model's user manual if this does not work.

If lock will not clear:

• Unplug the microwave for 2–3 minutes, then plug back in and try the unlock sequence again.
• If the keypad remains locked or certain keys do not respond, the membrane keypad may be failing and require replacement.