- Appliances
- Coffee machines
Refill with still water or change filter
Siemens EQ.6 plus «Refill with still water»: check water and filter
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Medium
Quick answer
The Siemens EQ.6 plus is not drawing water properly from the tank. Check the tank is correctly fitted and filled with fresh still tap water, then check the filter: rinsed, free of air and not exhausted.
Safety first
Stop and check this first
- Use only fresh, still tap water in the tank, as Siemens asks; sparkling water triggers this warning.
Safe checks you can perform
- Tank and type of water
- Float in the tank
- Water filter
Leave these tasks to a qualified professional
- Do not attempt this professional task: Check of water detection
- Do not attempt this professional task: Test with tank and filter
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Check of water detection
What they doSiemens service checks the tank housing and how the machine detects the water level and flow.
They must show youthe detection check with the tank fitted.
In writingthe cause found and any part replaced, with its reference.
Test with tank and filter
What they doWhen finished, the technician fits the full tank with the filter and makes drinks without the message returning.
They must show youthe drinks made with no warning.
In writingthe test carried out and the date.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Tank and type of water
- Who:
- you, no tools.
- How:
- take out the tank, empty it if it held sparkling water, fill it with fresh tap water and push it fully home.
- Result that matters:
- ruling out the two simplest causes.
- If the message clears:
- it was the tank or the water.
- If it stays:
- check the float.
- Evidence to keep:
- a note of the water used and how the tank was fitted.
Evidence: Understanding your EQ.6 plus coffee machine display messages
Float in the tank
- Who:
- you.
- How:
- with the tank out, see whether the float moves freely; if it is stuck, clean the tank thoroughly, as Siemens says.
- Result that matters:
- the float rising and falling without catching.
- If it was stuck and the message goes after cleaning:
- it was the float.
- If it moves freely:
- go to the filter.
- Evidence to keep:
- a photo of the float before cleaning.
Evidence: Understanding your EQ.6 plus coffee machine display messages
Water filter
- Who:
- you.
- How:
- if the filter is new, rinse it as instructed before switching on; dip it in water until no bubbles come out and refit it; if it is old, fit a new one.
- Result that matters:
- a rinsed filter, free of air and within its life.
- If the message goes:
- it was the filter.
- If it stays with tank, water, float and filter all right:
- contact Siemens service.
- Evidence to keep:
- the date the filter was fitted.
Evidence: Understanding your EQ.6 plus coffee machine display messages
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Appliances
- Brand
- Siemens
- Product type
- Coffee machines
Known code variants
- EQ.6 plus change filter message
- EQ.6 plus still water message
- Refill with still water or change filter
- Siemens cafetera cambiar filtro agua
- Siemens coffee machine water filter message
- Siemens EQ6 agua sin gas o cambiar filtro
- Siemens EQ6 change water filter
What it means
Siemens gives six causes for this message on the EQ.6 plus: tank incorrectly inserted, carbonated water, a stuck float in the tank, an unrinsed water filter, air in the filter, or an old filter. All of them affect water intake from the tank: the float reports the level and the filter sits in the water path into the machine. The message does not say which of the six it is, and none of them means an internal fault; they are ruled out one by one from the tank.
Warnings and stop conditions
- Lowsource verified
Use only fresh, still tap water in the tank, as Siemens asks; sparkling water triggers this warning.
Evidence: Understanding your EQ.6 plus coffee machine display messages
Symptoms and causes
Probable causes · in order
- Tank not fitted correctlyCommon
The tank is not fully seated; fitting it properly clears the message without touching the filter.
Evidence: Understanding your EQ.6 plus coffee machine display messages
- Carbonated waterPossible
The tank holds sparkling water; Siemens asks for fresh tap water and with it the warning goes away.
Evidence: Understanding your EQ.6 plus coffee machine display messages
- Stuck floatPossible
The float in the tank does not move; you can see it with the tank out and it is solved by cleaning thoroughly.
Evidence: Understanding your EQ.6 plus coffee machine display messages
- Unrinsed filter or air in itPossible
A new filter was not rinsed before switching on, or has air inside; Siemens says to dip it until no bubbles come out.
Evidence: Understanding your EQ.6 plus coffee machine display messages
- Exhausted filterPossible
The filter no longer lets water through well; with everything else right, Siemens says to fit a new one.
Evidence: Understanding your EQ.6 plus coffee machine display messages
Virtual technician
Does Refill with still water or change filter still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Understanding your EQ.6 plus coffee machine display messages
Siemens · 2026 · official_doc
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