⚠
warning De'Longhi
Error Code REPLACE WATER FILTER PRESS OK TO START
The water softener filter (D4) is exhausted.
? What Causes This
Filter lifespan exceeded.
✓ How to Fix It
Press the confirmation button to replace or remove the filter as per guidelines in section 17.2.
Source: page 25 of the official manual
From the manual
This error code appears in:
De'Longhi Dinamica