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Siemens eq. 6 plus s500, add still water or replace the filter

Majin Vegeta 64263 20
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Why does my Siemens EQ.6 Plus S500 keep showing "add still water or replace the filter" even after refilling water and replacing the filter?

The most likely cause is that the machine is not detecting water flow correctly, usually because the flow meter is clogged or faulty [#18549637] Open the left side, find the flow meter in the lower corner, disconnect the plug and hoses, and twist it apart; then blow through it and check that the rotor spins freely and the air resistance returns after reassembly [#19591100] If cleaning does not help, replace the flow meter; one reply also suggests cleaning the axis thoroughly and possibly the turbine first [#18767785] If the fault still remains, check for scale or blockage in the heater path, including the upper heater connector or the silicone strainer at the heater outlet [#19544653][#20714299]
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  • #1 18548896
    Majin Vegeta
    Level 2  
    Posts: 2
    Rate: 10
    Hello.
    While making coffee, the message "add still water or replace filter" was displayed. I added water, replaced the filter and made other options described by the manufacturer in the instructions. However, it is still the same, i.e. it rinses the filter and fills the condensate container. Anyone had a similar problem and solved it?
    Siemens eq. 6 plus s500, add still water or replace the filter
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  • #3 18628030
    Sylwia 28
    Level 2  
    Posts: 2
    Rate: 9
    I'm tapping into the problem: I've been getting the same error for a month, the coffee machine was replaced at the service center, no improvement, replaced with a new model - still error. I took it to another house - it works flawlessly. And now I'm asking for some brainstorming - the reason is with me, but where? The voltage in the socket is correct, the water in the tap is hard, but once I accept it, it works for a few days, then I get the error again and the miracles begin. A lot of coffee went to the trash, because they grind the coffee, but it has a problem with drawing water, sometimes it takes half a cup, sometimes coal, the original filter, now it even pours water, also from the jug filter. The only rule of everything is a place-home.
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  • #4 18765093
    Design892
    Level 6  
    Posts: 9
    Rate: 17
    Hello, someone managed to solve the problem. I have the same message. Is it possible to replace the flow meter or is it possible to fix it without replacing it?
  • #5 18765297
    Majin Vegeta
    Level 2  
    Posts: 2
    Rate: 10
    Siemens eq. 6 plus s500, add still water or replace the filter
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  • #6 18765942
    Sylwia 28
    Level 2  
    Posts: 2
    Rate: 9
    In my case, everything was replaced, nothing helped, then it was decided to buy a completely new device, and again the message on the new unit, the unit was sent to my brother-in-law for testing, it turns out that the fault lies with the electrical system in the house, the old installation was modernized several times, the electricians say even the possibility of some electromagnetic field is also a more serious matter
  • #7 18765947
    Design892
    Level 6  
    Posts: 9
    Rate: 17
    The coffee machine worked without problems for over 2 years. So I don't think it's an electrical fault. Well, I'll start by disassembling and looking at the pump and flow meter. Thanks for the info
  • #8 18767785
    rafal051989
    Level 10  
    Posts: 5
    Rate: 14
    The flow meter will need to be replaced, of course you can try to clean the axis thoroughly and maybe the turbine will help.
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  • #9 19488431
    radeks1968
    Level 13  
    Posts: 731
    Rate: 417
    "Pour still water", replaced pump, nothing, replaced flow meter, nothing, is it electronics or something completely different
  • #10 19493891
    KubaK3
    Level 1  
    Posts: 1
    Rate: 14
    Hello. Yesterday I received the same message, eq. 500 coffee machine, has anyone managed to solve it? Did the service help you?
  • #11 19544653
    KamilLuckyLuk
    Level 1  
    Posts: 1
    Rate: 3
    Hello, my problem turned out to be a clogged upper heater connector. After unblocking it, everything started working.
    Attachments:
    • 20210801_130917.mp4 (12.84 MB) You must be logged in to download this attachment.
  • #12 19591100
    TomOld
    Level 11  
    Posts: 11
    Rate: 11
    My Siemens EQ6 s300 coffee machine also received the message "add still water or replace the filter".
    I disassembled the coffee machine, specifically the left side. There is a flow meter in the bottom corner. After blowing, there was no "gurgling" sound. I unplugged the plug and hoses and took it apart. Just twist, no screws or latches required. I blew, moved and blew after assembly. Now there was resistance in the air and the sound of the flow meter turning could be heard. After assembly, everything works properly.
  • #13 20108864
    KrisBrandt
    Level 2  
    Posts: 3
    Rate: 9
    Hello. Can you describe step by step how to get to the flow meter? At first I thought it was the infuser's fault and I ordered a new one. It lasted 5 weeks and the same thing happened again. "add still water or replace the filter" I do not have an additional filter because there is no need for it. A new brewer arrived (another one) and after 3 coffees, the same message again and the brewer did not return to the ZERO position. So I'll try with a flow meter. Maybe something hurts there.
  • #14 20108873
    TomOld
    Level 11  
    Posts: 11
    Rate: 11
    I don't remember now because I did it while watching a YouTube video. Try entering the phrase: flow meter siemens eq6.
  • #15 20109193
    KrisBrandt
    Level 2  
    Posts: 3
    Rate: 9
    Approx. I will try this way 👍
  • #16 20110275
    radeks1968
    Level 13  
    Posts: 731
    Rate: 417
    I replaced the power module in mine and it works, but this is the last resort.
  • #17 20110299
    KrisBrandt
    Level 2  
    Posts: 3
    Rate: 9
    Yesterday I wanted to clean and descale again and unfortunately I didn't finish. A message appears asking me to add "descaler" and press START. I completed what he asked for and nothing. I try to go further, but after about 8 seconds I get the same message again and again. So now I'm confused as to where the problem could be.
  • #18 20110303
    radeks1968
    Level 13  
    Posts: 731
    Rate: 417
    Unfortunately, you have to go to the pump, sometimes it pumps but stops and then the heater, ceramic valve, infuser and all that fun. The customer asks why there is so much, it's just stone.
  • #19 20292053
    piatekeram
    Level 1  
    Posts: 1
    Sylwia 28 wrote:
    I'm tapping into the problem: I've been getting the same error for a month, the coffee machine was replaced at the service center, no improvement, replaced with a new model - still error. I took it to another house - it works flawlessly. And now I'm asking for some brainstorming - the reason is with me, but where? The voltage in the socket is correct, the water in the tap is hard, but once I accept it, it works for a few days, then I get the error again and the miracles begin. A lot of coffee went to the trash, because they grind the coffee, but it has a problem with drawing water, sometimes it takes half a cup, sometimes coal, the original filter, now it even pours water, also from the jug filter. The only rule of everything is a place-home.


    The same, I wrote a lot of words, I clicked preview, my text disappeared, I encourage you to discourage

    Added after 1 [minute]:

    Siemens is a company that made parts for Jagerpantzer

    Added after 29 [minutes]:

    sorry for the previous entry
    I disassembled the left side of the coffee maker, disassembled the flow meter, reassembled it and the Siemens started. the next day he made 5 more coffees and again informed me to add STILL water. I think there's air in something, I disassembled the machine and I'm at a loss because I didn't expect such a leaky device. crap in every corner, mold around the ground coffee container,

    4 years of operation is possible, but the manual does not write about electric shock, only about deeper cleaning procedures

    Added after 3 [minutes]:

    I'm looking at the pump, I'll let you know when I assemble it.

    in the meantime I bought Jura, the foam is incomparably better
  • #20 20714299
    thomas__1
    Level 23  
    Posts: 646
    Help: 50
    Rate: 144
    My heater was completely clogged with scale. Fortunately, it is demountable. Half a teaspoon of stone came out of it. Additionally, at the outlet of the heater there is a connector with a silicone strainer. It was packed there too. Photo of a disassembled device with a visible heating element and wires. It rests on a pink towel.
  • #21 20714376
    radeks1968
    Level 13  
    Posts: 731
    Rate: 417
    This is rare in these heaters, only with this filter. However, something can always surprise you

Topic summary

✨ The discussion revolves around issues faced with the Siemens EQ.6 Plus S500 coffee machine, specifically the persistent error message "add still water or replace filter." Users report various troubleshooting steps, including adding water, replacing filters, and checking electrical systems, but the problem persists. Common suggestions include inspecting or replacing the flow meter, cleaning the pump, and addressing potential clogs in the heater or connectors. Some users have found success by disassembling the machine and cleaning internal components, while others suspect electrical issues related to their home systems. Overall, the problem appears to be complex, with multiple potential causes and solutions.
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FAQ

TL;DR: On Siemens EQ.6, this alert usually means blocked water flow. One owner removed half a teaspoon of scale; "completely clogged with scale." Fix by cleaning the flow meter or clearing the heater outlet; rare cases need electronics. [Elektroda, thomas__1, post #20714299]

Why it matters: This helps Siemens EQ.6/EQ.6 plus s500/EQ.500 owners fix the "add still water/replace filter" error fast.

Quick Facts

What does "add still water or replace filter" mean on Siemens EQ.6/EQ.500?

The control board isn’t seeing water flow pulses. As one expert put it, “no reading from the flow meter.” The machine may grind or rinse and then abort. Focus first on the flow meter and upstream blockages. [Elektroda, nioop, post #18549637]

How do I get to and clean the flow meter on EQ.6/EQ.6 plus s500?

Try this 3-step:
  1. Remove the left side cover to access the lower corner.
  2. Unplug the flow meter’s connector and hoses, twist it open, rinse, and reassemble.
  3. Blow through it; feel resistance and hear “gurgling,” then reinstall and test brewing. This revived operation for one owner. [Elektroda, TomOld, post #19591100]

Should I replace the flow meter or can I revive it?

Start by reviving it. Clean the axis and turbine so it spins freely. If cleaning fails, replace the flow meter. As one tech advised, “clean the axis thoroughly” before replacing. [Elektroda, rafal051989, post #18767785]

My EQ.6 rinses and fills the drip tray but still asks for water—what now?

Clean the flow meter first. Remove and blow through it to free the turbine. Reassemble and listen for the turning sound during a water cycle. This cleared the error for a user after reassembly. [Elektroda, TomOld, post #19591100]

Can a clogged heater or outlet strainer cause this message?

Yes. One EQ.6 heater was “completely clogged with scale,” and half a teaspoon of limescale was removed. The silicone strainer at the heater outlet was packed, too. Clearing these restored flow. Inspect and descale the heater path and strainer. [Elektroda, thomas__1, post #20714299]

Where exactly is the flow meter on EQ.6?

Behind the left side panel, in the bottom corner. Disconnect its plug and hoses to service it. It opens by twisting, with no screws or latches. [Elektroda, TomOld, post #19591100]

Pump and flow meter were replaced and it still errors—what next?

Consider electronics. One owner restored operation only after replacing the power module. Treat this as the last resort after plumbing checks. “This is the last resort.” [Elektroda, radeks1968, post #20110275]

Why does my EQ.6 work fine at another house?

A user saw the error at home, but the same machine worked elsewhere. They traced it to issues with their home’s electrical system. Ask a qualified electrician to evaluate your installation. [Elektroda, Sylwia 28, post #18765942]

How can I tell if the flow meter is stuck without tools?

Remove the flow meter and blow through it. If there’s no “gurgling” and no resistance, the turbine may be stuck. After cleaning and reassembly, you should feel airflow resistance and hear it turning. [Elektroda, TomOld, post #19591100]

Descaling keeps looping (asks for descaler again). What should I check?

Check flow first, then the pump. A weak pump can start and then stop. Next, inspect the heater, ceramic valve, and brew unit for scale or blockage. Restore flow consistency before rerunning descaling. [Elektroda, radeks1968, post #20110303]

Will replacing the brew unit fix this?

Unlikely. One user fitted a new brewer that lasted five weeks, then another failed after three coffees. The error persisted. Focus on the flow meter, pump, and scale in the heater path first. [Elektroda, KrisBrandt, post #20108864]

Is there a quick temporary fix I can try today?

Remove and clean the flow meter to free the turbine. This can restore operation quickly. Note: One user got a day of use and about five coffees before the error returned. Repeat cleaning or address underlying scale and leaks. [Elektroda, piatekeram, post #20292053]

Could internal leaks or mold affect water pickup?

Yes. One owner found a leaky interior and mold after years of use. Leaks can introduce air and disrupt flow detection. A deep internal clean and leak check can improve reliability. [Elektroda, piatekeram, post #20292053]

EQ.500 shows the same message—are fixes the same?

Yes. Owners report the same alert on EQ.500. Apply the same checks: flow meter cleaning, heater outlet inspection, and pump verification. [Elektroda, KubaK3, post #19493891]

It worked for years—can this error appear suddenly?

Yes. One machine ran fine for over two years before showing the alert. Wear and gradual scale buildup can eventually block flow. Clean the flow meter and descale the heater circuit. [Elektroda, Design892, post #18765947]
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