Control buttons are hard to press or stick, sometimes causing unintended selections.

Safety: Unplug the unit before working on the control panel.

• Clean surface: Wipe the control panel with a slightly damp cloth and mild detergent to remove sticky residues.
• Inspect behind panel: Remove the fascia to check for dried spills or debris around mechanical buttons. Clean carefully.
• Check membrane keypad: If the membrane is bubbled, cracked, or unresponsive, replace the keypad or entire UI assembly.
• Reassemble and test: After cleaning or replacement, test each button for smooth operation.