When it comes to coffee machine repair, Siemens troubleshooting tables you can see below are an excellent guide. As every lineup has its distinctive features, there are separate tables for each range, including EQ series, TK series, and TE series.

Siemens TE series coffee machine troubleshooting

ProblemCauseSolution
Display shows
refill Bean container
although the bean container is full, or the grinding unit does not grind the beans
Beans are not falling into the
grinding unit
(beans too oily)
Gently tap the bean container.
Change the type of coffee if necessary.
When the bean container is
empty, wipe it with a dry cloth.
No hot water dispensedThe milk frother is soiled. Clean the milk frother
Too little or no milk froth.1) The milk frother is soiled.
2) Build-up of limescale in the
appliance
3) Milk unsuitable for frothing.
4) The milk frother is not
correctly assembled
1) Clean the milk frother
2) Descale the appliance as described in the instructions 3) Use low-fat milk (1.5 % fat).
4) Wet the milk frother parts and press together firmly
Coffee dispensing slows
to a trickle or stops
completely.
1) Coffee is ground too finely.
Pre-ground coffee is too fine.
2) Build-up of limescale in the
appliance.
1) Adjust the grinding unit to a coarser setting. Use coarser
pre-ground coffee.
2) Descale the appliance as described in the instructions.
Coffee has no "crema"1) Unsuitable type of coffee.
2) The beans are no longer
fresh
3) The grinding setting is not
suitable for the beans
1) Use a type of coffee with a higher proportion of robusta
beans
2) Use fresh beans
3) Adjust grinding setting to fine
Coffee is too "acidic"1) The grinding setting is too
coarse or the pre-ground
coffee is too coarse
2) Unsuitable type of coffee
1) Adjust the grinding unit to a finer setting or use finer preground coffee
2) Use a darker roast.
Coffee is too "bitter".1)The grinding setting is too
fine or the pre-ground coffee
is too fine.
2) Unsuitable type of coffee.
1) Adjust the grinding unit to a coarser setting or use coarser
pre-ground coffee.
2) Change type of coffee used.
Display shows
Error
Call hotline
The appliance has a fault.Please call the hotline.
The water filter does not
stay in position in the water
tank
The water filter is not
mounted correctly.
Firmly press the water filter straight down into the tank connection.
Display shows
Check water tank
1) Water tank has been
incorrectly inserted or the
new water filter has not
been rinsed according to
instructions.
2) Carbonated water in the
water tank.
1) Insert the water tank correctly or rinse the water filter
according to instructions and then switch on.
2) Fill the water tank with fresh
tap water
The coffee grounds are not
compact and are too wet
The grinding setting is too
fine or too coarse, or not
enough ground coffee has
been used
Adjust the grinding unit to a coarser or finer setting, or use
2 level measuring spoons of ground coffee
Display shows
Clean brewing unit
1) Brewing unit is soiled
2) Too much pre-ground coffee
in the brewing unit
3) The brewing unit's mecha-
nism is stiff
1) Clean brewing unit
2) Clean brewing unit (pour
in no more than 2 level measuring spoons of ground coffee)
3) Remove and clean the brewing unit
Coffee or milk froth quality
varies considerably
Build-up of limescale in the
appliance
Descale the appliance as described in the instructions
Water dripped onto the
inner floor of the appliance
when the drip tray was
removed
Drip tray removed too
early.
Wait a few seconds after the last drink was dispensed before removing the drip tray
Display shows
Insert brewing unit
Brewing unit is missing or
was not recognised.
Switch off the appliance with the brewing unit in place, wait three seconds and switch on the appliance
Restore the unit to its
original factory settings
("Reset").
You changed some settings
and want to discard them
Turn off the unit with the power on/off switch O / I.
Press and hold the e off / j and the h button and turn the appliance on with the power
on/off switch O / I.
Confirm by pressing the start button
start. The factory settings are now activated.

Siemens CT series (built in) coffee machine troubleshooting

ProblemCauseSolution
Strongly fluctuating coffee or milk froth quality (e.g. fluctuation in quantity or milk froth
spraying)
1) Build-up of limescale in the appliance
2) The suction pipe is blocked
1) Descale the appliance according to the instructions
2) Clean the suction pipe
Drinks cannot be dispensedBeverage outlet or one of the 3 connections are blockedClean the beverage outlet and the connections
The drink runs out at
the entire outlet during
dispensing
Lower part of the beverage outlet is missingAttach the lower part.
Too little milk froth, none at
all, or the milk system is not
taking in any milk
1) Build-up of limescale in the appliance
2) Beverage outlet or one of the 3 connections are blocked
3) Milk not suitable for foaming
4) Beverage outlet or the milk tubes are not correctly assembled
5) The suction pipe is blocked
1) Descale the appliance
2) Clean the beverage outlet and the connections
3) Do not use milk that has already been boiled. Use cold milk with a fat content of at least 1,5%
4) Moisten the individual parts and put them together again
5) Clean the suction pipe
The personally selected
volume is not reached. Coffee dispensing slows to a trickle or stops completely
1) Coffee is ground too finely.
Preground coffee is too fine
2) Heavy build-up of limescale in the appliance
1) Adjust the grinding level to a coarser setting. Use a coarser ground coffee
2) Descale the appliance according to the instructions.
Hot water milky or tastes of
coffee
1) Hot water milky or tastes of coffee
2) Milk or coffee residue in the beverage outlet
1) Remove the milk tube from the milk container
2) Clean the beverage outlet
Coffee has no "crema"1) Unsuitable type of coffee
2) The beans are no longer fresh
3) The grinding level is not suitable for the beans
1) Use a type of coffee with a higher proportion of robusta beans
2) Use fresh beans
3) Adjust the grinding unit to a finer setting.
Coffee is too "acidic"1) The grinding level is too coarse. Preground coffee is too coarse
2) Unsuitable type of coffee
1) Adjust the grinding unit to a finer setting. Use a finer ground coffee.
2) Change the type of coffee
Coffee is too "bitter"1) Coffee is ground too finely.
Preground coffee is too fine.
2) Unsuitable type of coffee
1) Adjust the grinding level to a coarser setting. Use a coarser ground coffee
2) Change the type of coffee
Coffee tastes burnt1) The brewing temperature is too high
2) Coffee is ground too finely. Preground coffee is too fine
3) Unsuitable type of coffee
1) Reduce the temperature.
2) Adjust the grinding level to a coarser setting. Use a coarser ground coffee
3) Change the type of coffee
Coffee is too "weak"1) Coffee strength selected is too weak
2) Ground coffee jammed in the coffee drawer
1) Raise the strength of the coffee.
2) Remove the ground coffee drawer, clean and dry thoroughly
Ground coffee sticks in the
coffee drawer
1) Ground coffee sticks together
2) Coffee drawer is damp
1) Do not press the ground coffee firmly into the coffee drawer
2) Remove the ground coffee drawer, clean and dry thoroughly
The water filter does not stay
in position in the water tank
The water filter is not mounted correctlyFirmly press the water filter straight down into the tank connection
Bean container sticks when
inserting
There are beans in the housingRemove the beans.
The coffee grounds are not
compact and are too wet
The grinding setting is too fine or too coarse, or not enough ground coffee has been usedAdjust the grinding unit to a coarser or finer setting, or use 2 level measuring spoons of ground coffee
Grinding level adjustment is
stiff
Too many beans in the grinding unitDispensing a drink from coffee beans. Only make any subsequent changes to the grinding level in small steps
Brewing unit cannot be
inserted
1) Brewing unit is in the wrong position
2) Brewing unit is locked
1) Insert the brewing unit according to the instructions
2) Unlock the brewing unit
Protective cover of the
brewing unit cannot be
properly attached
Brewing unit is not lockedLock the brewing unit
Display shows
"12:00"
Power failure or appliance switched off at mainsRe-enter values; do not switch the appliance off at the mains
or select the "Off" option in the Clock display menu
Display shows
"Milk container connected?"
despite connected milk
container
1) Container is outside the range of the sensor
2) Material e.g. milk carton is not recognised
1) Position the container at the right edge
2) Confirm the display request with "Yes" or use the enclosed milk container
Display shows, for example:
"Fault: E0510"
The appliance has a faultProceed according to the display screen
Display shows
"Fill bean container"
although the container is
already full, or the grinder is
not grinding any beans
Beans are not falling into the grinding unit (beans too oily)Gently tap the bean container.
Possibly change the type of coffee. When the bean container is empty, wipe it with a dry cloth
Display shows
"Clean brewing unit"
1) Brewing unit is soiled
2) Too much ground coffee in the brewing unit
3) The mechanism of the brewing unit is stiff
1) Clean the brewing unit
2) Clean the brewing unit. Do not place more than two level measuring spoons of ground coffee in the drawer
3) Clean the brewing unit
Display shows
"Refill with still water or
remove filter "
1) Water tank wrongly inserted
2) Carbonated water in the water tank
3) Float is stuck in the water
tank
4) New water filter not rinsed
according to instructions, or
water filter used or defective
4) Air in the water filter
1) Insert water tank correctly
2) Fill the water tank with fresh tap water
3) Remove the tank and clean thoroughly
4) Rinse the water filter according to the instructions
and then switch on, or use a new water filter
5) Dip the water filter into water until no more air bubbles escape, replace the filter
Problem
Display shows
"Refill with still water or
remove filter "
Display shows
"Empty drip trays"
despite them being empty
Drip tray is soiled and wetClean and dry the drip tray thoroughly
Display screen reads
"Insert drip trays"
even though drip tray in use
Inside of appliance (tray holder) dirtyClean the inside
Water dripped onto the inner
floor of the appliance when
the drip tray was removed
Drip tray was removed too soonWait a few seconds after the last drink was dispensed before removing the drip tray
Display shows
"Please press on/off"
1) Appliance is too warm
2) Dirty brewing unit
1) Leave the appliance to cool down
2) Clean the brewing unit

Siemens EQ series coffee machine troubleshooting

ProblemReasonRemedial action
The appliance no longer
responds
Fault in the appliance.Pull out the mains plug, wait 5 seconds, plug it back in
Coffee or milk froth quality varies considerablyBuild-up of limescale in the
appliance
Descale the appliance in accordance with the instructions.
The individually selected
per-cup quantity is not reached.
Coffee dispensing slows to a trickle or stops completely
1) Grinding level is too fine.
2) Heavy build-up of limescale in the appliance
3) Air in the water filter
1) Set a coarser grinding level.
2) Descale the appliance as described in the instructions
3) Immerse the water filter into water until no more air bubbles escape; insert the filter again.
No coffee dispensed, only
water.
1) An empty bean container is not detected by the appliance.
2) The coffee shaft on the brewing unit is blocked.
3) Beans are not falling into the grinding unit (beans too oily).
1) Pour in coffee beans
Note: The appliance will adjust to the coffee beans upon the next dispensing process
2) Clean the brewing unit.
3) Gently tap the bean container.Possibly
change the type of coffee. When the bean container is empty, wipe it with a dry cloth
Coffee has no "crema"1) Unsuitable type of coffee
2) The beans are no longer freshly roasted
3) The grinding level is not suitable for the coffee beans
1) Use a type of coffee with a higher proportion of robusta beans
2) Use fresh beans
3) Set a finer grinding level
The coffee is too "acidic"1) Grinding level set too coarse
2) Unsuitable type of coffee
1) Set a finer grinding level.
2) Use a darker roast.
The coffee is too "bitter"1) Coffee is ground too fine
2) Unsuitable type of coffee
1) Set a coarser grinding level
2) Change the type of coffee
The coffee tastes "burnt".1) Coffee is ground too fine
2) Unsuitable type of coffee
1) Set a coarser grinding level.
2) Change the type of coffee
Milk/blended milk drinks too hot.
Milk froth too thin, loud sucking noise.
Too little milk in glass or cup.Use more milk or adjust frothing time
Milk/blended milk drinks too
cold
Too much milk in glass or cup. Use less milk or adjust frothing time.
No milk/milk froth dispensedThe milk frother is soiled.
The milk frother is not inserted
in the milk
Clean the milk frother in the dishwasher.
Use more milk, check whether the milk frother is inserted in the milk. Slide the outlet system right down
The water filter does not stay in position in the water tank.The water filter is not mounted
correctly
Immerse the water filter into water until no more air bubbles escape; insert the filter again.
Firmly press the water filter straight down into the tank connection.
Water dripped onto the inner floor of the appliance when the drip tray was removedDrip tray removed too earlyWait a few seconds after the last drink was dispensed before removing the
drip tray.
The brewing unit cannot be
removed.
The brewing unit is not in the removal position (e.g. frost protection activated)Switch the appliance on again
The appliance cannot be oper-
ated, display messages chang-
ing
The appliance is in demo mode.Hold the k button for at least 5 seconds to deactivate demo mode
The grinder will not startThe appliance is too hot.Wait 1 hour so the appliance can cool down.
Display shows "Close door"
despite door closed
1) The door is not properly closed.
2) The appliance is too hot
1) Press the door firmly closed
2) Wait 1 hour so the appliance can cool
down
Display shows: "Empty trays"
despite empty drip tray - what
to do?
Emptying is not detected when the appliance is off.When the appliance is switched on, remove and re-insert the drip tray
Display shows "Fill water tank"
despite full water tank
1) Water tank wrongly inserted.
2) Carbonated water in the water tank
3) Float is stuck in the water tank.
4) New water filter not rinsed according to the instructions.
4) Air in the water filter.
5) Water filter is old
1) Insert water tank correctly
2) Fill the water tank with fresh tap water
3) Remove the water tank and clean thoroughly
4) Rinse the water filter according to the
instructions and then switch on.
4) Immerse the water filter (opening up)
in water until no more air bubbles escape; insert the filter again
5) Insert a new water filter
Display shows "Fill water tank"
and LEDs flashing.
1) Water tank is missing or not
inserted correctly
2) The pipe system in the appliance is dry
3) Air in the water filter
1) Insert water tank correctly
2) Fill the water tank with fresh tap water. Do not fill up with carbonated water
3) Immerse the water filter (opening up)
in water until no more air bubbles escape; insert the filter again.
Display shows "Clean brewing
unit".
1) Brewing unit is soiled
2) The brewing unit's mechanism is stiff.
1) Clean the brewing unit
2) Clean the brewing unit
Display shows "Incorrect voltage"Incorrect voltage in buildingOperate the appliance at 220V-240V only
Display shows "Device too cold"The ambient temperature is too coldOperate the appliance at temperatures >5°C.
Display shows "Restart appliance", LEDs flashingBrewing unit very heavily
soiled, or brewing unit cannot
be removed.
Switch the appliance off and back on again. Clean brewing unit if possible
Display shows "Restart appliance"; LED does not light upFault in the applianceRestart appliance

Siemens TK series coffee machine troubleshooting

FaultCauseRemedial action
ADD BEANS displayed
despite full bean container.
1) Grinding unit has still not been
filled automatically.
2) Degree of grinding is set too
fine and the coffee strength
rotary knob selected is VERY
MILD
1) Press ON button 2 5 again.
2) Set a coarser degree of grinding and/or select
stronger coffee.
No hot water or steam
discharge
Froth nozzle 13 is blockedClean froth nozzle 13 thoroughly
Froth insufficient or too runny1) Nozzle 13 is blocked
2) Blocked choke 13g
or blocked rotary knob 13a.
3) Unsuitable milk
1) Clean froth nozzle 13 thoroughly
2) Thoroughly free milk residue from individual parts.
3) Use cold semi skimmed milk
Coffee is running a drop at a
time.
1) Degree of grinding too fine
2) Preground coffee too fine
1) Set coarser degree of grinding.
2) Use a coarser ground coffee
Coffee has no "crema"1) Unsuitable type of coffee.
2) Beans no longer fresh.
3) Degree of grinding not
appropriate for coffee beans.
1) Change the type of coffee.
2) Use fresh beans.
3) Optimise degree of grinding.
Grind unit is not grinding
coffee beans
Beans are not falling into the
grinding unit (too oily)
Gently tap the bean container.
Possibly change the type of coffee.
If bean container is empty, wipe out with a dry cloth
Descaling programme is not
starting
1) Current programming is set
to: FILTER YES/NEW or
FILTER CHANGE
displayed.
2) System too hot.
1) Set programming to FILTER NO/OLD
Never descale with inserted filter
2) Let out some of the hot water
Cleaning programme does not
start
1) System too hot
2) Display FILTER CHANGE
1) Let out some of the hot water
2) Change filter
Grinding unit is making loud
noise
Foreign objects in the grinding
unit (e.g. grit which also
occurs in superior types
of coffee)
Contact Hotline.
Note: Preground coffee can still be prepared
Display
ERROR 1
Appliance too coldWait until the appliance has warmed up to room temperature
Display
ERROR 5
or
ERROR 8
Technical fault.Switch off the appliance for at least 10 seconds with the mains switch.

The German conglomerate company Siemens is known as the EU’s largest industrial manufacturing company. The range of electronics and electrical engineering products and services it provides is very diverse, from gas and steam turbines to heavy duty motors.
The company manufactures several types of coffee machines, including fully automatic bean-to-cup coffee centers.