LG
Buzzer / Alarm Circuit Stuck
LG air fryer emits a loud beeping or alarm that does not stop after the cycle ends.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Stuck alarm output on main PCB, Firmware glitch, Shorted buzzer, Stuck button keeping unit in alarm state
How to Fix / Troubleshooting
Safety first: Unplug the unit to silence the alarm before inspection.
Steps to stop persistent beeping:
- Control reset: Leave the unit unplugged for 10–15 minutes, then reconnect and test.
- Check buttons: Ensure no button is physically stuck or pressed in. Clean around buttons to remove debris.
- Inspect buzzer: Access the control board and locate the buzzer. Check for signs of damage or moisture. If the buzzer is shorted, replace the control board or buzzer module (if separate).
Note: If the alarm resumes immediately on power-up, the main control board may be defective and require replacement.
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Repair Difficulty
Medium
3/5
Required Part
Main Control Board
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