- Appliances
- Coffee machines
GENERAL ALARM
De'Longhi GENERAL ALARM on coffee machine: inside very dirty
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Medium
Quick answer
Your De'Longhi coffee machine shows GENERAL ALARM (or the red exclamation mark light) because the inside is very dirty. Switch it off with the button, unplug it, remove the brewing unit, clean it with warm water and vacuum the coffee grounds out of the inside before switching on again.
Safety first
Stop and check this first
- Unplug the machine before putting the vacuum or your hands into the brewing unit cavity, as De'Longhi instructs. Anything beyond that cavity is for the service centre.
Safe checks you can perform
- Switch off, unplug and open the service door
- Remove and wash the brewing unit
- Vacuum the inside, reassemble and switch on
Leave these tasks to a qualified professional
- Do not attempt this professional task: Diagnosis at an authorised centre
- Do not attempt this professional task: Post repair test
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.
Diagnosis at an authorised centre
What they doThe De'Longhi service centre checks why the alarm remains with a clean machine, using its diagnostic procedure.
They must show youthe alarm reproduced with a clean machine.
In writingthe cause found, any replaced part and the reason.
Post repair test
What they doThe technician brews several coffees and checks the alarm does not return.
They must show youseveral coffees brewed without the alarm.
In writingthe test result.
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.
Switch off, unplug and open the service door
- Who:
- you.
- How:
- switch the machine off with the front button and let it finish shutting down, unplug it, open the service door and remove the drip tray and grounds container.
- Result that matters:
- seeing how dirty the inside is.
- If lots of ground coffee has built up:
- dirt is the likely cause; go on cleaning.
- If the inside is clean:
- the cause may be the brewing unit; remove it anyway.
- Evidence to keep:
- a photo of the inside before cleaning.
Evidence: The general alarm light is showing on my machine. What can I do? · Eletta Cappuccino: Message GENERAL ALARM · Brewing Unit: Cleaning, Maintenance and Troubleshooting
Remove and wash the brewing unit
- Who:
- you.
- How:
- remove the brewing unit by squeezing the two red buttons either side of the PUSH button and clean it with warm water. Water only: De'Longhi warns detergents damage the appliance and the unit cannot go in the dishwasher.
- Result that matters:
- a clean brewing unit with no coffee residue.
- If it came out very dirty:
- it was part of the cause.
- If it will not come out without force:
- do not force it; note it for service.
- Evidence to keep:
- a photo of the unit before and after.
Evidence: The general alarm light is showing on my machine. What can I do? · Eletta Cappuccino: Message GENERAL ALARM · Brewing Unit: Cleaning, Maintenance and Troubleshooting
Vacuum the inside, reassemble and switch on
- Who:
- you.
- How:
- vacuum the inside thoroughly, especially behind the grounds container, refit the brewing unit, clean the tray and container, reassemble, plug in and switch on.
- Result that matters:
- whether the machine starts without GENERAL ALARM.
- If it starts without the alarm:
- the dirty inside was the cause.
- If the alarm remains after the full clean:
- contact De'Longhi service.
- Evidence to keep:
- date and a photo of the display with the message.
Evidence: The general alarm light is showing on my machine. What can I do? · Eletta Cappuccino: Message GENERAL ALARM · Brewing Unit: Cleaning, Maintenance and Troubleshooting
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
- De'Longhi
- Product type
- Coffee machines
Known code variants
- Alarma general
- De'Longhi exclamation mark
- De'Longhi general alarm
- Delonghi alarma general
- Delonghi luz roja exclamacion
- General alarm
What it means
De'Longhi links the GENERAL ALARM message, or the warning light with a red exclamation mark, to the inside of the appliance being very dirty. Ground coffee built up around the brewing unit and behind the grounds container stops the machine completing its cycle and the control flags it with this alarm. The code does not point to a specific part: De'Longhi asks you to clean thoroughly first and only turn to a service centre if the alarm persists.
Warnings and stop conditions
- Loweditorial warning
Unplug the machine before putting the vacuum or your hands into the brewing unit cavity, as De'Longhi instructs. Anything beyond that cavity is for the service centre.
Evidence: The general alarm light is showing on my machine. What can I do? · Eletta Cappuccino: Message GENERAL ALARM · Brewing Unit: Cleaning, Maintenance and Troubleshooting
Symptoms and causes
Probable causes · in order
- Grounds built up insideCommon
Opening the service door shows ground coffee behind the grounds container and around the brewing unit; after vacuuming it the alarm clears.
Evidence: The general alarm light is showing on my machine. What can I do? · Eletta Cappuccino: Message GENERAL ALARM · Brewing Unit: Cleaning, Maintenance and Troubleshooting
- Dirty brewing unitCommon
The brewing unit comes out with coffee stuck to it; washing it in warm water and refitting it clears the alarm even if the inside was clean.
Evidence: The general alarm light is showing on my machine. What can I do? · Eletta Cappuccino: Message GENERAL ALARM · Brewing Unit: Cleaning, Maintenance and Troubleshooting
- Fault needing servicePossible
With the inside vacuumed, the brewing unit clean and the tray and container empty, GENERAL ALARM remains; De'Longhi then refers you to an authorised service centre.
Evidence: The general alarm light is showing on my machine. What can I do? · Eletta Cappuccino: Message GENERAL ALARM · Brewing Unit: Cleaning, Maintenance and Troubleshooting
Virtual technician
Does GENERAL ALARM 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
The general alarm light is showing on my machine. What can I do?
De'Longhi · 2026 · official_doc
- 2
Eletta Cappuccino: Message GENERAL ALARM
De'Longhi · 2026 · official_doc
- 3
Brewing Unit: Cleaning, Maintenance and Troubleshooting
De'Longhi · 2026 · official_doc
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