20 Most Recent DeLonghi ESAM3500 Espresso Machine & Coffee Maker Questions & Answers

The General Alarm means the inside of the appliance is very dirty. Once cleaned, if 'General Alarm!' continues to display, you are advised to contact a service company. Disassemble the machine, making sure to clean every part of it, and put it back together. Plug the machine back in and let it run through it's self-diagnosis procedure.

Cleaning the coffee maker
The following parts of the appliance must be cleaned regularly:
- coffee grounds container
- drip tray
- water tank
- coffee spouts and hot water nozzle
- pre-ground coffee feed funnel
- inside the machine, accessible after opening the service door
- infuser
- milk container
- control panel

Follow the Cleaning and Maintenance procedures in the Instruction Manual for your device here:
  • Do not use solvents, abrasive detergents or alcohol to clean the coffee maker. With De'Longhi superautomatic coffee makers, you need not use chemical products to clean the machine. The descaler recommended by De'Longhi is made from natural and completely biodegradable substances.
  • None of the components of the appliance can be washed in a dishwasher with the exception of the milk container.
  • Do not use metal objects to remove encrustations or coffee deposits as they could scratch metal or plastic surfaces.
If the problem persists, you will need to contact the place where you purchased the machine to see if you can return it for replacement, or contact DeLonghi to see if they can help you out:

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

DeLonghi... | Answered on Dec 13, 2019


Understanding how the frothing mechanism functions is half the battle in figuring out the solution. It's a simple vacuum type system. No doubt you've read about checking the orings. This is definitely the first thing to check however if this is not the reason then consider the following.

The larger of the white tubes that has the red and black oring inserts deep into its port on the tap. Why? It pushes steam past the milk pipe directly into the chrome frothing tube which causes a vacuum essentially drawing milk up it's hose creating the froth. What you can't see without further investigation is that on the underside of the tube centered between the red and black orings is a small hole. This hole is responsible for drawing the milk upwards. If this is blocked, and it probably is then no milk and no froth. Use a really small screwdriver to carefully clean the white tube both from the front and the little hole underneath.

So in conclusion. Any air leak between the red and black rings will prevent the vacuum required to draw milk up the tube and alternatively any blockage of the milk channel will also obviously prevent the flow into the frothing mechanism.
Hope this helps.

DeLonghi... | Answered on Aug 05, 2017

I have a similar unit. One problem I had was a clogged solenoid for the frother. The solenoid is toward the front of my unit, connected to the frother by a hose. As I recall, I applied power to the solenoid and it did nothing. I figured it was clogged with minerals from hard water so I removed the solenoid from the machine, soaked it in vinegar, and tapped it a bunch of times to try loosen things up. Eventually, I could hear it engage when I applied power to it. I reinstalled it and the frother was working again.

Please note that the solenoids and pump inside the machine operate at full line voltage (e.g. 120VAC). Line voltage can hurt or even kill a person so you need to know what you're doing to work with it.

DeLonghi... | Answered on Mar 11, 2017

What do you see on the display when it is plugged in? Does it show the time or any other information? Does it do anything at all when you press the power button?

DeLonghi... | Answered on Apr 16, 2015

This is preset and cannot be altered.. Do ensure you preheat the milk frother before use.. by activating the "clean" button on the frother jug

DeLonghi... | Answered on Jun 21, 2014

You should describe the problem

DeLonghi... | Answered on Aug 29, 2013

I have change grinding from 7 to 1 ( it depends from coffee beans) and quality of coffee get much better (knob located inside the bean container).

DeLonghi ESAM... | Answered on Mar 16, 2016

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