Oven shows E17; child lock symbol may appear and controls remain locked even after attempting to unlock.

Safety first: Although this is a control issue, always disconnect power before removing panels.

• Attempt manual unlock: Follow the user manual procedure (often holding a specific key combination for several seconds) to toggle the child lock. Try multiple times.
• Power cycle: Turn off power at the breaker for 10–15 minutes, then restore and attempt to unlock again.
• Inspect touch panel: If the lock button area is unresponsive, remove the control panel and inspect the touch board for damage or moisture.
• Check ribbon cable: Reseat the ribbon cable between the touch panel and main PCB.
• Replace UI board: If the lock function remains stuck, replace the touch control panel / user interface board. If that does not resolve it, the main control board may also be defective.