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Milk system assembly difficulty

Milk system cannot be assembled or disassembled — Incorrect procedure

Siemens · EQ900 TQ900 Coffee Machines

What does Milk system assembly difficulty mean?

You are experiencing difficulty in correctly assembling or disassembling the milk system, suggesting an issue with the sequence of steps or a misalignment of parts.

Common Causes

  • Incorrect order of assembly or disassembly

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    When assembling, first connect the milk system, then the milk container.

  2. 2

    When disassembling, you must first remove the milk container and then the milk system.

  3. 3

    Visually inspect the components for any obstructions or damage that might hinder proper assembly.

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
Open Manual (Page 64)Search more codes in this manual