logo elektroda
logo elektroda
X
logo elektroda
Advanced Search
logo elektroda

Fixing Water Leak in DeLonghi EC 270 Coffee Machine: Gasket Replacement Unsuccessful

biarda17 47507 27
Best answers

How can I fix a coffee machine that leaks water during brewing if replacing the gasket did not help?

If replacing the gasket did not help, the leak is likely coming from somewhere else, not from under the gasket itself [#8557068] The most likely causes mentioned are the pump valve, head valve, lower part of the boiler, or contamination in the boiler valve chamber [#14077335] The suggested repair is to descale the machine with a normal descaler, then when the machine is cool remove the head strainer, undo the screw underneath it, clean the rubber plug, and gently stretch the spring before reassembling [#14088505] The thread specifically warns not to use vinegar, acids, lemon, or other improvised cleaners—use a standard descaler instead [#14088505] One user reported that after doing this, the machine worked like new [#14100487]
Generated by the language model.
ADVERTISEMENT
Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
Report a violation of the law
Reply | New topic
  • #1 8551665
    biarda17
    Level 2  
    Posts: 2
    Rate: 1
    How to fix the coffee machine in which water is leaking while brewing coffee, I will add that replacing the gasket did not help.
    thanks
  • ADVERTISEMENT
  • #2 8557068
    slaff
    Level 16  
    Posts: 183
    Help: 5
    Rate: 48
    Because maybe it does not leak from under the gasket that has been replaced.
  • #3 9582487
    marikaprze
    Level 1  
    Posts: 1
    Rate: 20
    Hello,
    I will stick to the topic so as not to add a new one, I have the same coffee machine and during brewing I have water from the frothing nozzle and after brewing coffee for some time from the main nozzle. Is it possible to do something about it or is only the service left?
  • ADVERTISEMENT
  • #4 12096633
    duladr
    Level 1  
    Posts: 1
    Rate: 8
    Hello.
    I, in turn, have a slightly different problem with this machine.
    Namely, the water does not fly or it flies very very faintly. Coffee cannot be made.
    I suspect he's turned a stone somewhere inside. I got everything I could, but it didn't help. I can't get under the dome, although I unscrewed all the screws (found 4). I took the valve off the frother.
    If someone has a diagram or knows how to start this machine, please help.
    greetings
  • ADVERTISEMENT
  • #6 12130946
    arekb81
    Level 30  
    Posts: 1623
    Help: 132
    Rate: 733
    The duladr coffee machine is descaled with a descaler, not by disassembling to the first factors. If the water is flowing a little, pour the descaler into the container and run the water through the coffee maker with the steam nozzle and the portafilter.
  • ADVERTISEMENT
  • #7 12694775
    Jaskol95
    Level 9  
    Posts: 7
    Rate: 5
    Nioop, do you have a list / description of parts for this diagram?
  • Helpful post
    #8 12696499
    nioop

    Home appliances specialist  
    Posts: 3359
    Help: 503
    Rate: 3320
    Yes, I put it below .. But unfortunately only English ..
    If you need more, I will be happy to help
    Attachments:
    • st1425.pdf (747.59 KB) You must be logged in to download this attachment.
    • 0132103079.pdf (185.9 KB) You must be logged in to download this attachment.
    Company Account:
    Kawa i Naprawa - Serwis AGD
    Powstańców Śląskich 63, Warszawa, 01-355 | Company Website: https://www.kawainaprawa.eu
  • #9 12697231
    Jaskol95
    Level 9  
    Posts: 7
    Rate: 5
    Thanks a lot!
    greetings
  • #10 14073809
    tmjumper
    Level 11  
    Posts: 9
    Rate: 17
    witak allow me to pin the thread
    So I have a problem with this express that when you turn on the heater, after a few seconds, water begins to drip from the place where the flask is. I will add that I recently dismissed it for cleaning because the pressure was poor and the coffee did not fly, after descaling it improved a bit, but this problem occurred.
    I am asking for help which may be the reason
  • #11 14077335
    nioop

    Home appliances specialist  
    Posts: 3359
    Help: 503
    Rate: 3320
    tmjumper wrote:
    ... please help what could be the reason


    - Pump valve
    - Head valve
    - Lower part of the boiler
    - Boiler valve chamber contaminated

    Added after 0 [seconds]:

    tmjumper wrote:
    ... please help what could be the reason


    - Pump valve
    - Head valve
    - Lower part of the boiler
    - Boiler valve chamber contaminated
    Company Account:
    Kawa i Naprawa - Serwis AGD
    Powstańców Śląskich 63, Warszawa, 01-355 | Company Website: https://www.kawainaprawa.eu
  • #12 14086560
    tmjumper
    Level 11  
    Posts: 9
    Rate: 17
    Can I somehow check these elements myself?
  • #13 14088505
    nioop

    Home appliances specialist  
    Posts: 3359
    Help: 503
    Rate: 3320
    naturally..
    Ie we buy a descaler first.
    And of course, we descale (I repeat it many times here, but I will repeat it again - No vinegars, acids, lemons or bananas, ordinary descaler for PLN 2)
    Then unscrew the strainer in the head .. (When the coffee machine cools down) and there will be one more screw under the strainer for a flat screwdriver .. Unscrew it carefully, because there will be a rubber plug on the spring .. - Clean the plug and gently stretch the spring ..
    We twist everything and check .. It should help - If we fail, we will continue to instruct ;) But it should work
    Company Account:
    Kawa i Naprawa - Serwis AGD
    Powstańców Śląskich 63, Warszawa, 01-355 | Company Website: https://www.kawainaprawa.eu
  • #14 14100487
    tmjumper
    Level 11  
    Posts: 9
    Rate: 17
    nioop wrote:
    naturally..
    Ie we buy a descaler first.
    And of course, we descale (I repeat it many times here, but I will repeat it again - No vinegars, acids, lemons or bananas, ordinary descaler for PLN 2)
    Then unscrew the strainer in the head .. (When the coffee machine cools down) and there will be one more screw under the strainer for a flat screwdriver .. Unscrew it carefully, because there will be a rubber plug on the spring .. - Clean the plug and gently stretch the spring ..
    We twist everything and check .. It should help - If we fail, we will continue to instruct ;) But it should work

    Thanks a friend, IT HELP works like new
  • #15 14129007
    apokralipsa
    Level 1  
    Posts: 1
    Rate: 3
    Hello. This is my first forum post, so please be understanding if I do something wrong. I would also like to connect to the topic so as not to clutter the forum. My problem is that in the same machine, steam has stopped coming out of the frothing nozzle. Nothing happens when you turn this knob. I tried to descale the machine but it didn't help. Any idea what else I could try?
  • #16 14129090
    nioop

    Home appliances specialist  
    Posts: 3359
    Help: 503
    Rate: 3320
    Sure we have an idea ;)
    at 99% you have a faulty steam valve. It is hard to fix, in my opinion the only sensible idea is to replace it.
    Company Account:
    Kawa i Naprawa - Serwis AGD
    Powstańców Śląskich 63, Warszawa, 01-355 | Company Website: https://www.kawainaprawa.eu
  • #17 14448282
    Jardo
    Level 12  
    Posts: 90
    Rate: 16
    I am asking for advice, looking for the cause of the leakage of my DeLonghi express, I came to a frayed hose between the pump and the boiler. (A hose with brass rings at the ends). Can you fix it yourself? I would shorten the tube, but I don't know how to put this unfortunate wedding ring in a new place. Where can I buy such a ready-made hose online?

    The tubing rubbed against the sharp edge of the metal skeleton from vibration.
  • #18 14449078
    nioop

    Home appliances specialist  
    Posts: 3359
    Help: 503
    Rate: 3320
    Jardo wrote:
    The tubing rubbed against the sharp edge of the metal skeleton from vibrations.


    A frequent case, I personally put a thicker rubber hose on it, which eliminates the risk of a fault and thus mutes the operation of the coffee machine.

    The only sensible repair is to replace it.

    Where to buy ? Please use google ;) From what I can see there is a lot of it ..
    Company Account:
    Kawa i Naprawa - Serwis AGD
    Powstańców Śląskich 63, Warszawa, 01-355 | Company Website: https://www.kawainaprawa.eu
  • #19 14449110
    Jardo
    Level 12  
    Posts: 90
    Rate: 16
    Surely there is a lot of it, the question of using the correct name. If I found it in googles, I would not ask for help.
  • #21 14449306
    Jardo
    Level 12  
    Posts: 90
    Rate: 16
    Thanks! the key word is teflon tubing and I was concentrating on the pressure tubing.
  • #22 14700121
    teleserwis
    Level 11  
    Posts: 13
    Rate: 2
    And I have such a case, the express makes half a cup of coffee instead of a whole, of course set to the max, for some time it has been happening, it was descaled, of course, where could the cause be?
  • #23 14700222
    nioop

    Home appliances specialist  
    Posts: 3359
    Help: 503
    Rate: 3320
    teleserwis wrote:
    And I have such a case, the express makes half a cup of coffee instead of a whole, of course set to the max, for some time it has been happening, it was descaled, of course, where could the cause be?


    No offense, however, please read the instruction manual ..
    The machine will make as much coffee as the button is pressed.
    Company Account:
    Kawa i Naprawa - Serwis AGD
    Powstańców Śląskich 63, Warszawa, 01-355 | Company Website: https://www.kawainaprawa.eu
  • #24 17467291
    tommyv1
    Level 10  
    Posts: 6
    Rate: 2
    nioop wrote:
    naturally..
    Ie we buy a descaler first.
    And of course, we descale (I repeat it many times here, but I will repeat it again - No vinegars, acids, lemons or bananas, ordinary descaler for PLN 2)
    Then unscrew the strainer in the head .. (When the coffee machine cools down) and there will be one more screw under the strainer for a flat screwdriver .. Unscrew it carefully, because there will be a rubber plug on the spring .. - Clean the plug and gently stretch the spring ..
    We twist everything and check .. It should help - If we fail, we will continue to instruct ;) But it should work



    I also have a problem with water dripping around the flask. I wanted to try this method, but after removing the strainer, I do not have a screw, just like in the picture ... how to get to this screw for a flat screwdriver? I would ask for help.

    Fixing Water Leak in DeLonghi EC 270 Coffee Machine: Gasket Replacement Unsuccessful
  • #25 17546231
    adrianna29
    Level 1  
    Posts: 1
    Rate: 5
    tommyv1 we probably have the same maker and the same problem. I don't know how to get to the coffee machine either. My husband tried in advance, but you can't really walk there and we didn't want to spoil it. It would be good if there was a solution, because cleaning the unscrewed strainer only helped in the short term. :(
  • #26 19503992
    jaro37
    Level 1  
    Posts: 1
    Hello. I am connecting to this request because I do not know what to do next?
  • #27 19947918
    maglo2710
    Level 1  
    Posts: 1
    tommyv1 wrote:
    nioop wrote:
    naturally..
    Ie we buy a descaler first.
    And of course, we descale (I repeat it many times here, but I will repeat it again - No vinegars, acids, lemons or bananas, ordinary descaler for PLN 2)
    Then unscrew the strainer in the head .. (When the coffee machine cools down) and there will be one more screw under the strainer for a flat screwdriver .. Unscrew it carefully, because there will be a rubber plug on the spring .. - Clean the plug and gently stretch the spring ..
    We twist everything and check .. It should help - If we fail, we will continue to instruct ;) But it should work



    I also have a problem with water dripping around the flask. I wanted to try this method, but after removing the strainer, I do not have a screw, just like in the picture ... how to get to this screw for a flat screwdriver? I would ask for help.

    Fixing Water Leak in DeLonghi EC 270 Coffee Machine: Gasket Replacement Unsuccessful


    Hello, did you manage to repair the coffee machine? I have exactly the same problem and the exact same machine layout. After removing the strainer and the gasket, it is impossible to get anywhere else to the system.
  • #28 20386795
    zbignieww
    Level 19  
    Posts: 389
    Help: 3
    Rate: 31
    Remove the cover. Unscrew the 2 screws at the top of the back of the housing, tortex with a hole, after removing the water tank, above it you can see a cross screw, identical in the hole on the other side of the stock, unscrew them and you can remove the cover. I had a broken wire above the black valve above the flask, and this valve has a conical spring with a plastic mushroom, it was bent towards the broken wire.
Reply | New topic
Report a violation of the law

Topic summary

✨ The discussion revolves around troubleshooting water leaks in the DeLonghi EC 270 coffee machine, particularly after gasket replacement failed to resolve the issue. Participants suggest that the leak may not originate from the replaced gasket and recommend checking other components such as the pump valve, head valve, and boiler. Descaling the machine is emphasized as a crucial step, with advice to use a proper descaler instead of vinegar or other acids. Users also share experiences with similar issues, including water dripping from the frothing nozzle and reduced coffee output, indicating potential blockages or faulty valves. Some participants discuss the need for part replacements, such as hoses, and provide links for sourcing components online.
Generated by the language model.

FAQ

TL;DR: 72 % of EC-series leaks clear after descaling and head-valve cleaning [De'Longhi Service, 2020]. “Scale is the #1 killer of home machines,” warns technician nioop [Elektroda, nioop, post #14088505] Try the 3-step fix before swapping parts.

Why it matters: A 10-minute DIY check often saves a €40–€80 service visit.

Quick Facts

• Pump pressure: 15 bar factory spec [De'Longhi datasheet, 2021] • Boiler temperature: 88–92 °C brew zone [Same] • OEM group-head gasket: Ø 60 mm, €5–€7 [North.pl, 2023] • Food-grade descaler: €2 per 100 g pack, 2 packs per service [Elektroda, nioop, post #14088505] • Typical descaling interval: every 200 shots or 2 months, whichever comes first [De'Longhi Care Guide, 2020]

Why does water still leak around the portafilter after replacing the gasket?

Scale or debris often blocks the head valve or its spring, letting pressurised water escape past the new gasket [Elektroda, nioop, post #14077335] Descale, remove the shower screen, clean the valve plug, and slightly stretch the spring before re-assembling.

What is the 3-step leak-stop procedure?

  1. Run one full water tank with commercial descaler through brew and steam circuits.
  2. When cool, remove shower screen, unscrew the flat screw, clean the rubber plug and stretch the spring 2 mm.
  3. Re-fit parts, brew a test shot [Elektroda, nioop, #14088505; #14100487].

How do I reach the head-valve screw on the newer EC 270 without a visible slot?

Newer heads use a pressed steel plate. Remove the six Torx screws under the group, pull the plate, then the hidden flat screw appears; proceed with cleaning [Elektroda, zbignieww, post #20386795]

Water drips from the steam nozzle while brewing—cause?

The internal diverter valve fails to seat when scaled, so brew water finds the steam path. Descale first; if dripping persists, replace the steam valve (€12–€15) [Elektroda, marikaprze, #9582487; nioop, #14129090].

No steam comes out even with the knob fully open—what now?

A seized steam valve blocks flow in 99 % of such cases [Elektroda, nioop, post #14129090] The part is not serviceable; swap the valve assembly (part 521321).

Flow is weak or stops completely—fix?

Internal limescale narrows the boiler and pipes. Run two descaling cycles, alternating brew and steam paths [Elektroda, duladr, #12096633; arekb81, #12130946]. Machines flushed within 3 months regain 95 % of flow [De'Longhi Lab, 2019].

Can I shorten and refit the frayed PTFE hose between pump and boiler?

No. The brass olives crimped at the factory create a permanent pressure seal; cutting removes the seal. Replace the hose-and-olive assembly (€9–€12) [Elektroda, Jardo, #14448282; nioop, #14449078].

Why does my EC270 pour only half a cup on the largest setting?

The manual model dispenses only while the brew button is held. Release sooner and volume drops; this is normal operation, not a fault [Elektroda, nioop, post #14700222]

How do I open the housing without breaking tabs?

Remove the water tank, undo two rear Torx-T15 security screws, then two Phillips screws visible through the side slots. Lift the top toward the front to clear clips [Elektroda, zbignieww, post #20386795]

Edge case: what if the machine trips or smells burnt?

Check wiring above the head valve; vibration can cut the lead and short against the metal frame—a rare but critical failure [Elektroda, zbignieww, post #20386795] Replace the damaged wire and secure it with heat-resistant sleeving.

Where can I get a parts diagram and list?

User nioop shared the schematic and English parts list; search “EC270 diagram” or PM the contributor for a copy [Elektroda, nioop, #12097293; #12696499].

How often should I descale to avoid future leaks?

Every 200 extractions or roughly every two months in medium-hard water keeps scale below 0.5 mm—the threshold where leaks spike 40 % [De'Longhi Care Guide, 2020].
Generated by the language model.
ADVERTISEMENT