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Coffee not dispensed/slow

Coffee is not dispensed or has slowed to a trickle. Set quantity is not reached — Flow restriction

Siemens · EQ900 TQ900 Coffee Machines

What does Coffee not dispensed/slow mean?

Coffee is being dispensed very slowly, or not at all, and the expected amount is not delivered. This indicates a restriction in the coffee's pathway.

Common Causes

  • Grinding level is set too fine
  • Heavy build-up of limescale in the appliance
  • Air is trapped in the water filter
  • Appliance is soiled with coffee residues

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Set a coarser grinding level for your coffee beans.

  2. 2

    Descale the appliance as per the instructions in your manual to remove mineral deposits.

  3. 3

    Remove the water filter, immerse it in water until no more air bubbles escape, then reinsert it.

  4. 4

    Clean the brewing unit and thoroughly clean and descale the entire appliance.

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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