Your AEG coffee machine can suddenly stop working for a number of different reasons. Sometimes, the remedy is as simple as adjusting the mill, while in other cases you may have to take the machine apart to fix it. The troubleshooting tips below will guide you through the process of the coffee machine repair, no matter whether it is a serious issue or a minor malfunction.

AEG PE, CG coffee machine troubleshooting

DISPLAYED MESSAGEPOSSIBLE CAUSEREMEDY
FILL TANKThe water tank is empty or
positioned incorrectly
Fill the tank with water
and/or insert it correctly,
pushing it as far as it will go
GROUND TOO FINE ADJUST
MILL AND
(alternating with)
PRESS OK
• The grinding is too fine
and the coffee is delivered
too slowly.
• The machine cannot make the
drink as there is air in the
hydraulic circuit
Possible cause: the filter
has not been installed correctly.
•Turn the grinding adjustment knob one click
clockwise towards "7".
•Make sure the filter
is propertly installed and
that the installation has
been carried out correctly.
GROUND TOO FINE ADJUST
MILL AND
(alternating with)
PRESS OK
(then)
FILL TANK
The tank has been removed during deliveryInsert the tank and press
the OK icon (B9). "HOT
WATER PRESS OK" is displayed
EMPTY WASTE COFFEE
CONTAINER
The waste container is too full or more than 3 days have
passed since you last
made coffee (this guarantees correct hygiene of the
machine).
Empty the waste container and clean, then
replace.
Important: when removing the drip tray, the
waste coffee container
MUST be emptied, even if
it is not completely full.
If this is not done, when
you make the next drink, the waste container may fill up more
than expected and clog
the machine.
INSERT WASTE COFFEE
CONTAINER
After cleaning, the waste container has not been replacedOpen the service door and
insert the waste container.
ADD PRE-GROUND COFFEE• The "pre-ground coffee"
function has been selected without placing any
pre-ground coffee in the
funnel.
• The funnel is bloc-
ked.
• Extract the appliance and
place pre-ground coffee in
the funnel.
• Empty the funnel with the
help of a knife
PLEASE DESCALE!The machine must be descaled.The machine must be descaled.
LESS COFFEEToo much coffee has been
used
Select a milder taste or reduce the quantity of preground coffee, then make the drink again.
FILL BEAN CONTAINERThe coffee beans have run
out
Fill bean container
INSERT BREWING UNITThe brewing unit has not
been replaced after cleaning.
Insert the brewing unit
CLOSE DOORThe service door is openClose the service door.
GENERAL ALARM!The inside of the appliance is very dirty.Clean the inside of the appliance thoroughly
REPLACE FILTER!The water softener filter must be replaced.You must immediately replace the filter

AEG LM 5100 (AEG A Modo Mio Lavazza) coffee maker troubleshooting

Espresso capsule system

ProblemsCausesSolutions
The machine does not turn on.The machine is not connected to the
power source
Connect the machine to the power source.
The pump is very noisy.
No water flow.
No water in the tank.Fill the tank with fresh drinking water.
1. Prime the water circuit.
2. Check correct water tank position
The loading lever doesn't reach the
brewing position.
Capsule inserted incorrectly.Empty the used capsule compartment.
Repeat the sequence, open and close the lever. If that
is not enough remove the capsule manually from the
compartment after unplugging the machine.
The coffee is cold.Preheat the cup with the hot water.
The coffee is brewed too fast, the
brewed coffee is not creamy.
Capsule already used.Open the lever and insert a new capsule.
Coffee is not brewed or brewed in
drips only.
Coffee spout is clogged.Clean the coffee spout.
Hot water / steam is not dispensed.Hot water / steam spout is clogged.Clean the steam spout with a needle (the machine
needs to be unplugged and the steam / hot water knob
needs to be closed).
The milk does not froth.Not suitable milk.Use fresh, partially skimmed milk.
The milk is too hot.Use milk at refrigerator temperature.
The hot water / steam spout is clogged.Clean the steam spout with a needle (the machine
needs to be unplugged and the steam / hot water knob
needs to be closed)
The machine requires a lot of time
to heat up
The machine has limescale build up.Descale the machine.
FLASHING LIGHTSThe machine requires a lot of time to heat up The machine may
have lime scale build up, descale the machine
NO COFFEE BREWED/
LEAKING UNDER
MACHINE
Remove the coffee
dispensing spout by pulling
the spout fully down and
remove it by pulling
towards you. Clean and put
back in place.
or
Prime the machine
Or
Empty drip tray
LEVER STUCKEmpty capsule drawer
Or The last capsule not fallen
in to correct position. Open
and close the level or
unplug the machine and
manually push down.
NOISY MACHINEFill tank with fresh cold
water and ensure it is
fitted correctly.
PROBLEMS WITH
STEAM ARM
Blockage of steam spout: Remove steam wand from
below the rubber holder
and clear blockage in the
steam spout (e.g. with a
pin).
NOTE: Don’t forget to
wipe the steam arm and
open and close the steam
dial for a few seconds
after every use to keep it
hygienic and prevent
blockages.

AEG FRESH AROMA KAM300 coffee maker troubleshooting

ProblemSolution
The appliance does not work.Put the mains plug in the wall socket.
Make sure that the voltage indicated on the appliance corresponds to
the local mains voltage.
Fill the water reservoir with water.
When I use the grinder, the coffee is too weak.Make sure the number of cups you select with the 2-10 cups button is
consistent with the amount of water in the water reservoir. Please keep
in mind that the appliance uses all the water in the water reservoir.
Use the STRENGTH button to set the coffee strength to 'strong' .
When you use coffee beans, make sure you do not press the preground
coffee button, as this switches off the grinder.
Use beans of a stronger blend or flavour.
To increase the coffee strength, select a higher number of cups with
the 2-10 cups button than the number of cups you fill the water
reservoir with.
When I use pre-ground coffee, the drink is too weak.Make sure the amount of pre-ground coffee in the filter is consistent
with the amount of water in the water reservoir. Please keep in mind
that the appliance uses all the water in the water reservoir.
Use ground beans of a stronger blend or flavour.
To increase the coffee strength, increase the amount of pre-ground
coffee or decrease the amount of water.
I have set the coffee strength to 'strong' with the
STRENGTH button, but the coffee is too weak.
When the grinder is switched off, you cannot change the coffee
strength with the STRENGTH button. In this case you can only increase
the drink strength by increasing the amount of pre-ground coffee or decreasing the amount of water, or by using beans of a stronger blend or flavour.
The filter overflows when I remove the jug from the
appliance while it is brewing coffee.
If you remove the jug for more than 20 seconds during the brewing
process, the drip stop causes the filter holder to overflow. Also note
that the drink does not reach its full taste before the end of the
brewing process. Therefore we advise you not to remove the jug and
pour out the coffee before the end of the brewing process.
The appliance continues to drip long after the brewing
process has ended
The dripping is caused by condensation of steam. It is completely
normal that the appliance drips for some time.
If the dripping does not stop, the drip stop may be clogged. To clean
the drip stop, push it to open it and then rinse it under the tap.
If you remove the jug for more than 20 seconds during the brewing
process, the drip stop causes the filter basket to overflow.
The coffee is not hot enough.Place the jug properly on the hotplate.
Make sure that the hotplate and the bottom of the jug are clean.
Use thin cups, because they absorb less heat from the coffee than
thick cups.
Do not use milk that comes directly out of the fridge.
Descale the appliance.

AEG CS coffee machine troubleshooting

ProblemSolution
The coffee is not hot The cups have not been preheated.
• Pre-heat the cups by rinsing them in
hot water or leaving them for at least
20 minutes on the cup warmer tray
• The infuser is too cold.
Heat the infuser by pressing the *button (see under the table)
button before making the coffee.
The coffee is not creamy enough• The machine uses too little coffee dur-
ing the infusion process.
Turn the grinding quantity selector
knob a little clockwise.
• The coffee is ground too coarse.
Turn the grinding adjustment knob one click anticlockwise.
• Wrong type of coffee.
Use a type of beans for fully automated espresso makers.
The coffee comes out too slowly• The coffee is ground too fine.
Turn the grinding adjustment knob
one click clockwise.
• The machine uses too much coffee
during the infusion process.
Turn the grinding quantity selector
knob a little anticlockwise.
The coffee comes out too quickly• The coffee is ground too coarse.
Turn the grinding adjustment knob
one click anticlockwise.
• The machine uses too little coffee dur-
ing infusion.
Turn the grinding quantity selector
knob a little clockwise.
The coffee does not come out of one
of the spouts
• The outlet is blocked.
Scrape the remains of dry coffee accumulated with a needle
Turning the steam knob, no steam
comes out of the milk frother
• The holes in the spouts are clogged.
Clean the holes in the milk frother and
the milk frother nozzle.
Pressing the 1cup or 2cups button
the machine does not deliver coffee,
but only water
• Ground coffee may be blocked in the
funnel.
Remove the ground coffee inside the
funnel, using a knife. Then clean the infuser and the
inside of the machine.
Pressing the 'Start' button, the machine does not switch on• The machine is not plugged in.
Check that the power cable is plugged into the power outlet.
The infuser cannot be removed for
cleaning
• The machine is on. The infuser can only
be removed if the machine is off.
Turn the machine off.
Attempting to remove the infuser with
the machine on will risk causing
damage.
Ground coffee is used (rather than
beans) and the machine does not
deliver the coffee.
Too much ground coffee has been
added
Remove the infuser and thoroughly
clean the inside of the machine. Repeat the operation
using a maximum of 2 level measures
of ground coffee.
• The ** button (see under the table) has not been pressed and the machine has used both the
ground coffee added and the coffee
ground by the grinder.
Thoroughly clean the inside of the
machine. Repeat
the operation by first pressing the ** button (see under the table).
• Ground coffee has been added when
the machine is off.
Remove the infuser and thoroughly
clean the inside of the machine. Repeat the operation, however switching on the
machine first.
The coffee does not come out of the
spouts, but rather around the service
door
• The holes in the spouts are clogged
with dry coffee.
Scrape the holes with a needle.
• The mobile drawer inside the service
door is blocked and cannot swing.
Thoroughly clean the mobile drawer,
above all near the hinges, so that they
swing smoothly

AEG button coffee maker troubleshooting