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Coffee too acidic

Coffee is too acidic — Grinding level or coffee type issue

Siemens · EQ900 TQ900 Coffee Machines

What does Coffee too acidic mean?

Your brewed coffee tastes excessively acidic. This is often related to the grinding level being too coarse or the type of coffee beans used.

Common Causes

  • Grinding level is set too coarse
  • Type of coffee is not optimal

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Adjust the grinder to a finer setting to extract more flavor and reduce acidity.

  2. 2

    Use a coffee variety with a higher proportion of Robusta beans or beans with a darker roast.

  3. 3

    Experiment with different coffee bean types to find one that produces a less acidic flavor.

Browse all codes in this manual (27)
Verified technical data. Last updated: April 2026

Related Faults

Appliance unresponsiveAppliance no longer responds — Appliance has a faultBrewing unit jammedBrewing unit cannot be removed — Locking device jammedCoffee grounds wet/not compactCoffee grounds are not compact and are too wet — Grinding or bean issue
Source: Siemens EQ900 TQ900 Coffee Machines
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