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light 1 and 2 flash

One and Two Cup lights flash — Machine not at ideal coffee temperature

DeLonghi · ESAM4200 Espresso Machine

What does light 1 and 2 flash mean?

The machine is heating up and not yet ready to brew coffee. The green One Cup and Two Cup indicator lights will flash until the correct temperature is reached.

Common Causes

  • Machine is warming up to reach optimal brewing temperature.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Wait for the One Cup and Two Cup lights to stop flashing and remain on steady.

  2. 2

    Ensure the machine has been on for a few minutes after starting.

  3. 3

    If the problem persists, try turning the machine off and on again to reset.

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 flash after steamOne and Two Cup lights flash after steam use — Machine too hot for coffee
Source: DeLonghi ESAM4200 Espresso Machine
Open Manual (Page 17)Search more codes in this manual