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light 8 flashes

Scale Alarm light flashes — Machine needs descaling

DeLonghi · ESAM4200 Espresso Machine

What does light 8 flashes mean?

This light indicates that lime scale has built up in the machine and the descaling procedure needs to be performed soon.

Common Causes

  • Accumulation of lime scale inside the machine components.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Prepare the descaling solution as per De'Longhi's recommendations and manual instructions.

  2. 2

    Perform the automatic descaling program immediately.

  3. 3

    After descaling, ensure the machine is rinsed thoroughly according to the manual.

  4. 4

    Consider adjusting the water hardness setting if you have soft water to reduce descaling frequency (Page 16).

Browse all codes in this manual (13)
Verified technical data. Last updated: April 2026

Related Faults

coffee delivered too fast, not creamyCoffee delivered too fast and not creamy enough — Grinding coarseness or quantity adjustment neededcoffee delivered too slowlyCoffee delivered too slowly (in drops) — Grinding coarseness or quantity adjustment neededlight 1 and 2 flashOne and Two Cup lights flash — Machine not at ideal coffee temperature
Source: DeLonghi ESAM4200 Espresso Machine
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