Descaling light or DESC message will not clear even after descaling.

Safety first: There is no immediate safety risk, but continued use without proper descaling can damage the machine.

• Repeat reset procedure: Consult the manual for the exact button sequence to reset the descale indicator. Perform it precisely.
• Power cycle: Unplug the machine for 5–10 minutes, then plug back in and repeat the reset.
• Confirm full descale: Ensure you completed all steps of the descaling program, including rinses.

If the indicator still will not clear, the control board's memory or firmware may be faulty and require service.