Beeping is excessively loud or continuous, even when no buttons are pressed.

Safety first: Unplug the unit if the beeping is continuous and cannot be silenced.

• Clean control panel: Wipe the control panel to remove any sticky residue that may hold a button down.
• Power reset: Unplug for 10–15 minutes, then reconnect.
• Inspect for moisture: Open the control panel area and look for moisture or corrosion. Dry thoroughly and clean with isopropyl alcohol if needed.
• Replace control panel or board: If the buzzer continues to sound without input, replace the control panel assembly or main control board depending on where the buzzer is located.