Question about DeLonghi EAM3500 Espresso Machine/Coffee Maker

2 Answers

EAM 3400 Internal Leak

I have a model EAM 3400 expresso super-automatic. A couple of weeks ago after a regular schedule cleaning, the machine began dropping only about half the water through the infuser and into the cup. the rest appears to be leaking from somewhere inside the machine.
After each cycle, approximately half the water ends up in the drip tray from inside, or worse, on the floor of the internal compartment.

The machine has been fantastic for a little over two years, which coincidently is now two months out of warranty and Delonghi has stated they will not repair it (not that they could anyway; my god, FOUR service centers in the entire USA???)

It is a 1300$ machine and I really would like it back up and running. Someone told me there is a replacement seal kit and step-by-step instructions online for how to disassemble and reassemble the machine. If anyone knows about this I'm dieing to find out how.

Posted by on

  • introspect Mar 17, 2009

    I am having the same problem with two of my machines - does anyone have a fix yet?



2 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    A rookie expert who has answered 20 questions on their first day.

  • Contributor
  • 30 Answers

Coffee leaking into the drip tray could be from the brew unit or the front door assembly. Water leaking probably means a hose connection to the boiler has failed. Don't just leave it, fix leaks immediately. Besides the electrical danger, the rust on working parts from long term leaks can be extensive.

Are you confident? Operate the machine with all covers off to see where the leak comes from. Be extremely careful, ready to pull the plug at any moment. Touch nothing inside! Burning, scalding and electrified! Check both boilers very closely while making coffee, most leaks become obvious on close examination.

Most leaks are due to failed o-rings in the connectors at the end of the teflon hoses, usually at the coffee boiler. Replacing the o-rings should stop the leak.

Source replacement o-rings. Slide the hairpin c-clip out of the side of the white connector and pull the teflon hose out. Fish the old o-ring out of the connector with a small hook or point if it didn't come out with the hose. Place the new o-ring over the end of the hose, snug against the brass collar. push the hose back into the coupling being careful to go straight and true so as not to damage the new o-ring. Some force may be required, be careful not to kink the hose. Blunt needle nose pliers to push the rear of the brass collar usually does it. Replace the c-clip and test for further leaks before reassembling.

Posted on Jan 28, 2012

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Mine started leaking too. I took the machine apart and cleaned everything. (if your at all mechanically minded it is very, very simple to take apart). Still leaked. I ended up leaving the top off the water dispenser and the leaking water goes right back into it! Don't know if your leak is that "lucky". Just thought I would share.

Posted on Oct 18, 2010


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Repairman can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Repairman (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

3 Answers

Descale eam3400 delonghi magnifica machine

Hi, you need to select descale procedure from menu options and then add descale solution usually 100-125ml to 1l of water to your tank. Also you should find this how to do in instruction manual.

Jun 28, 2014 | DeLonghi EAM3500 Espresso Machine/Coffee...

2 Answers

Cimbali m1 locked out

Machine might have calling for a clean cycle for a while, if it does not get one it lock up until cleaned.

Sep 30, 2013 | Espresso RMI La Cimbali Espresso Machine

1 Answer

Kenwood kdw12st3a error e1 & water leak

I suspect it is taking too long to fill.
Remove the inlet hose and check the water pressure there.
Also make sure the small filter there is clean and retry.
If you have ever turned the washer on any side, then
I think you may have water in the pressure switch by turning it over.
You need to locate it and see if there is water in there.
It should e round and have wires attached and a thin rubber tube. Unfortunately There is no parts diagram for this machine

Apr 16, 2012 | Kenwood Dishwashers

1 Answer

Will not issue a start signal all of a sudden. How to test to see if it is the switch or the gen. panel

I have a Kohler 12RESM1 whole-house generator with a 200AMP RDT, MPAC 500 Automatic transfer switch (ATS) in my home. The system was installed in 2006 and has been working great since. Several weeks ago I began noticing that the weekly tests weren't occurring on schedule and that the generator would initiate a starting crank for a couple seconds several time a day. The false starts began occurring more frequently as time progressed. (BE very careful!! You will be killed if you are not careful!! ) In order to isolate the trouble between the ATS and the generator, I disconnected the 2 start circuit wires from the ATS controller (2 wires on green connector). The problem stopped, which led me to believe the problem was the ATS controller board. The controller board in my ATS is a GM35950. After removing the board (BE very careful!! You will be killed if you are not careful!! ) and doing a little troubleshooting, I determined the trouble was the set of .47F 5V super-capacitors. These are the 2 black oval-shaped cans behind the relays that appear hot-glued together. I ordered 2 new caps from Digi-key (approx. $4.00 ea). The P/N is PB-5R0V474-R. Replacing the supercaps cured the problem. Don't be fooled, these capacitors are .47 farads, not .47 microfarads, thus the reason they're called Supercaps. They function similar to a battery in this application. Oh by the way, I ordered a couple extra Caps. They have a 1000 hour life expectancy, so I suspect I'll need to replace them again in 6-7 years. Good Luck, I wouldn't advise attempting this job unless you have the proper soldering equipment and are experienced with electronic repair. There's a company that will repair the board for $170. Try googling "Kohler GM35950 repair".

Jan 30, 2011 | Kohler 200-Amp Automatic Transfer Switch...

1 Answer


try cleaning any old bean dust ect with vacuum ... refit or replace infuser lot better . if still no good you need someone to check pcb assy ... bsc appliances 07779933829 we cover repair service anywere via post.

Nov 28, 2010 | DeLonghi EAM3400 Espresso Machine

1 Answer

The coffe grinder smell burn after usage. Is there a way to clean it.

You should check you manual for directions as to how to take the machine apart to clean it because it needs regular cleaning. Since you have not cleaned it in a while, the beans are probably getting super hot and burning inside the grinder because of friction. Also, this particular machine operates best with a drier (less oily)coffee bean... think Italian expresso beans. These drier beans should work better with this machine.

Mar 04, 2010 | Saeco Easy Espresso Machine

1 Answer

Where can I buy the steam lever for my Delonghi EAM 3400?? I understand that I can just pull the old one off and push the new one in ...

Call Delonghi, I had to replace the "tap" valve on my machine and they wouldn't sell me an "internal" part but gave me the contact # for two companies that would sell it to me.

Jan 09, 2010 | DeLonghi EAM3400 Espresso Machine

1 Answer

I have a model EAM 3400 expresso super-automatic. A couple of weeks ago after a regular schedule cleaning, the machine began dropping only about half the water through the infuser and into the cup. the...

Yes indeed... whozcraig,

65% of the problem reports on these
EAM 3400 are "LEAKS" ...

I would also check also AMAZON & eBay (prices)
((eBay = machines for parts, parts + lots of O-rings ))
but some of the BIG parts houses actually have
video assistance on-line...

Just NOT my favorite (appliancepartspros)

DeLonghi EAM3400 Magnifica Parts

Parts do abound... (a popular problem)...
Good luck

Carnac the Magnificent

Mar 11, 2017 | Refrigerators

5 Answers

DeLonghi Rialto Expresso Machine EAM-4500

You need to reset it. Unplug machine, remove waste container and tray. Put the waste container back in without the tray and slide a knife under the waste container, close door. Plug in. It should reset. Turn off, replace tray and waste container and turn unit back on.

Easier, call their 800 number and they'll walk you thru it.

Jun 03, 2008 | DeLonghi EAM3500 Espresso Machine/Coffee...

Not finding what you are looking for?
DeLonghi EAM3500 Espresso Machine/Coffee Maker Logo

572 people viewed this question

Ask a Question

Usually answered in minutes!

Top DeLonghi Coffee Makers & Espresso Machines Experts


Level 3 Expert

102366 Answers

Henry  Thomas
Henry Thomas

Level 3 Expert

1074 Answers

Shehu Pro
Shehu Pro

Level 3 Expert

1284 Answers

Are you a DeLonghi Coffee Maker and Espresso Machine Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides