Safety: Unplug the ice maker before opening the control panel.

Steps to resolve E9:

Dry the control area: If the panel was recently splashed, unplug the unit and allow it to dry for several hours. Do not use a hair dryer on high heat; gentle ambient drying is best.
Inspect the control panel: Remove the screws securing the top cover or front bezel to access the control panel PCB and keypad membrane.
Check ribbon cable: Locate the flat ribbon cable connecting the display/keypad board to the main control PCB. Reseat both ends carefully, ensuring they are fully inserted and locked.
Look for corrosion: Examine the keypad PCB for signs of moisture damage, corrosion, or burnt components. Clean light corrosion with isopropyl alcohol and a soft brush.
Test button response: Reassemble loosely, plug in, and test each button. If some buttons still do not respond or trigger wrong functions, the keypad assembly is likely faulty.
Replace parts: Replace the control panel / keypad PCB. If a new panel does not resolve the issue, the main control PCB may also need replacement.

Note: Avoid spraying cleaners directly onto the control panel; apply to a cloth first.

E9 error, display works but buttons unresponsive or random functions trigger

Possible Causes