Most coffee maker repairs do not require professional skills or tools. All you need is patience and a reliable source of information.

There is every possibility that you will be able to fix your Tassimo coffee maker on your own if you follow the instructions you see below. Mind the model of the coffee maker you use to identify the right troubleshooting table for your machine.

Tassimo TAS 20XX coffee maker troubleshooting

ProblemPossible causeSolution
Appliance not working; no symbols light up.There is no power supply.Check that the appliance is properly plugged into the power supply.
Machine brews but no drink dispensed.The water tank was removed during the brewing process or there is air in the system.Replace the water tank in the appropriate position in your TASSIMO machine. Start a cleaning process with the Service T DISC.
The float in the water tank is stuck.Clean the water tank and en- sure the float can move.
Automatic mode not working, appliance remains in stand-by mode.No T DISC inserted.Check if T DISC has been inserted.
The barcode could not be detected.Clean the bar code read- ing window and try again or smooth the barcode on the T DISC out with your thumb.
Use another T DISC.
Automatic mode skipped, appliance goes straight to 9 Manual mode.The barcode could not be detected.Clean the bar code reading window.
Use another T DISC.
You can still prepare the drink by holding down the start/stop button.
The quality of the crema has deteriorated.The drink outlet is clogged or dirty.Remove the drink outlet from the brewing unit and detach the piercing unit. After cleaning everything thoroughly, reassemble the parts and replace them in the brewing unit.
Brewing unit cannot be securely closed.Piercing unit / T DISC holder is not properly inserted.Insert the T DISC holder and piercing unit properly.
The T DISC is not inserted properly.Re-insert the T DISC and make sure it is properly positioned.
The brewing unit is not prop- erly closed.Push the clamp down firmly until it audibly clicks into place.
Water dripping from the brewing unit.The T DISC is damaged or leaky.Stop the brewing process, remove the T DISC and clean the brewing unit.
The piercing unit is either not inserted or not inserted properly.Check to ensure that the piercing unit is inserted properly.
Water on the surface under the cup stand.Water from condensation.Condensation may occur and is not a fault. Remove it by wiping with a cloth.
Service T DISC is damaged or lost.The Service T DISC must always be used for cleaning and descaling processes.Look for the Service T DISC in the storage compartment at the back of the appliance.
The Service T DISC can be obtained from the Bosch customer service department
Fill tank lights up even though there is sufficient water in the tank.The float in the water tank is stuck.Clean the water tank and ensure that the float can move.
are flashing simultaneously and it is not possible to prepare drinks.There is a fault on the machine.Turn the machine off using the on/off switch, wait approximately 5 minutes and turn the machine back on.
® Descale flashes even though you are using soft water.Even soft water contains small amounts of dissolved lime.Descale the appliance.

Tassimo TAS 12xx coffee maker troubleshooting

ProblemCauseSolution
The appliance is not working and none of the display elements (LEDs) are lighting.The appliance has no power supply.Check to see whether the appliance is connected to the mains.
The appliance is not switched on.Make sure the appliance has been switched on.
The brewing starts, however there is no beverage dispensed.The water tank is not inserted correctly.Check that the water tank is correctly inserted.
The water tank was removed during the brewing stage or there is air in the system.Start the cleaning process with the yellow Service T DISC.
The float in the water tank is stuck.Clean the water tank and free the float.
The brewing will not start.No T DISC inserted.Check that a T DISC has been inserted.
The appliance does not recognise the T DISC bar code.Clean the T DISC reading window with a soft, damp cloth.
Smooth out the foil of the T DISC with your finger so that the bar code can be read.
Use a new T DISC.
If the problem persists, contact the TASSIMO careline.
The brewing unit is not closed properly.Clean the brewing unit with a soft, damp cloth, paying particular attention to the lid area.
The appliance was not switched on when inserting the T DISC.Switch on the appliance before inserting the T DISC
The brewing unit cannot be closed.The piercing unit and/ or the T DISC support have not been correctly inserted.Press the piercing unit into its holder using both thumbs and check the position of the T DISC support.
The T DISC has not been correctly inserted.Replace the damaged T DISC with a new one. Place the T DISC with the printed side facing downwards so that the tab is resting in the intended slot.
The brewing unit is not closed properly.Clean the brewing unit with a soft, damp cloth, paying particular attention to the lid area.
Press the lid down until it audibly clicks into place.
The brewing unit cannot be opened.The brewing unit is still locked.Wait until the Status LED has stopped blink- ing before attempting to open the brewing unit.
If the brewing unit stays locked, contact the TASSIMO careline.
Fill water tank iS lights up.There is not enough water in the water tank.Fill the tank with cold, fresh water as far as the max mark. Reinsert the water tank.
Fill water tank tS lights up even though there is enough water in the water tank.The float in the water tank is stuck.Clean the water tank and free the float.
The water tank is not inserted correctly.Check that the water tank has been correctly inserted.
Fill water tank and Descale © are flashing simultaneously and it is not possible to prepare drinks.There is a fault on the machine.Turn the machine off using the On/Off switch, wait approximately 5 minutes and turn the machine back on. If © are still flashing, please contact the TASSIMO careline.
Descale lights up or starts flashing.The appliance needs to be descaled.Descale the appliance.
Descale lights up or starts flashing even though decalcified water has been used.Even decalcified water contains low amounts of calcium carbonate.Descale the appliance.
The quality of the crema has deteriorated.The beverage outlet is sticky or dirty.Clean the beverage outlet.
Clean the brewing unit with the yellow Service T DISC.
Build-up of limescale in the appliance.Descale the appliance.
Water is dripping from the brewing unit.The T DISC is damaged or leaky.Do not use T DISCs that are damaged.
The T DISC has not been pierced correctly.Only use each T DISC once. Wait until the brewing stage has come to an end and the appliance has cooled down. Remove the T DISC and clean the brewing unit.
The piercing unit has not been inserted correctly.Press the piercing unit into its holder using both thumbs (until an audible click is heard).
On the surface below the cup stand there is water.This is condensation.Condensation may appear and is not caused by any fault with the appliance. Wipe the water away with a cloth.
The yellow Service T DISC is damaged or lost.The yellow Service T DISC can be requested from Bosch Customer Services
The beverage quantity does not meet your requirements.The T DISC bar code provides the recom- mended volume for every beverage selected. This volume can also be adapted to personal requirements.Reduced quantity:
During the brewing process, press the Start/Stop button to interrupt this stage.
Increased quantity:
Press and hold the Start/Stop button until the required beverage quantity has been reached.
Build-up of limescale in the appliance could cause reduced quantity.Descale the appliance.