Display shows ERR6 and the coffee maker powers on but none of the brew functions respond.

Safety first: Unplug the coffee maker before touching the control panel internals.

Dry and reset the interface:

• If the panel was recently exposed to steam or a spill, unplug the unit and let it dry in a warm, dry room for 24 hours.
• Do not use a hair dryer or heat gun directly on the panel; excessive heat can warp the plastic and damage electronics.
• After drying, plug in and test the buttons again.

Inspect connections (if comfortable opening the unit):

• Remove the top or front trim to access the control panel ribbon cable.
• Reseat the flat ribbon cable between the keypad and main control board, ensuring it is fully inserted and not corroded.
• Check for signs of liquid damage or corrosion on the user interface PCB.

If ERR6 persists and buttons remain unresponsive, the user interface board or main control board is likely defective and should be replaced. This is a moderate to advanced repair; consider a professional if you are not experienced with electronics.