Freezer displays L1 or a lock icon and buttons do not respond.

Safety first: No internal repair is needed for this condition; it is a user setting.

• Disable child lock: On most Haier freezers, press and hold the lock button (or a combination such as "Temp + Alarm") for 3–5 seconds until the lock icon disappears.
• Check user manual: Refer to the specific model's manual for the exact key combination to toggle the lock.
• Power reset: If the panel remains locked, unplug the freezer for 5 minutes and plug back in, then attempt to disable the lock again.
• Panel replacement: If the lock icon will not clear and buttons are unresponsive despite correct procedure, the user interface board may be faulty and require replacement.