Siemens EQ900 TQ900 Coffee Machines
27 fault codes documented
Appliance no longer responds — Appliance has a fault
The coffee machine is not responding to any commands, indicating an internal fault or temporary malfunction. This can often be resolved with a simple reset.
Brewing unit cannot be removed — Locking device jammed
The brewing unit is jammed and cannot be removed, likely due to a locking device issue or internal misalignment.
Coffee grounds are not compact and are too wet — Grinding or bean issue
The used coffee grounds are not forming a compact puck and appear too wet, indicating an issue with the grinding level or the coffee beans themselves.
Coffee is not dispensed or has slowed to a trickle. Set quantity is not reached — Flow restriction
Coffee is being dispensed very slowly, or not at all, and the expected amount is not delivered. This indicates a restriction in the coffee's pathway.
Coffee tastes burnt — Grinding, coffee type, or temperature issue
Your brewed coffee has a burnt taste. This can result from the grinding level being too fine, an unsuitable coffee type, or the brewing temperature being too high.
Coffee is too acidic — Grinding level or coffee type issue
Your brewed coffee tastes excessively acidic. This is often related to the grinding level being too coarse or the type of coffee beans used.
Coffee is too bitter — Grinding level or coffee type issue
Your brewed coffee tastes excessively bitter. This can be caused by the grinding level being too fine or the coffee type being unsuitable.
There is dripping water on the inner floor of the appliance — Drip tray removed too soon
Water is dripping onto the inner floor of the appliance, usually due to the drip tray being removed before all residual liquids have fully drained.
Display very frequently shows ' ' (empty symbol) — Limescale or filter issue
The empty symbol appears frequently on the display, suggesting ongoing issues with water quality, descaling, or the water filter, indicating persistent lime build-up or incomplete service programs.
Grinder is not grinding any coffee beans despite full bean container — Bean feed issue
The grinder is running but not processing coffee beans even though the bean container is full. This usually indicates a problem with the beans feeding into the grinder.
Grinder won't start — Appliance is too hot
The coffee grinder is not starting, which can happen if the appliance has overheated and needs to cool down to prevent damage.
Home Connect is not working properly — Connection or app issue
The Home Connect features of your appliance are not functioning as expected. This can be due to various reasons, including network issues or app-related problems.
Display shows 'Incorrect voltage' — Power supply problem
The appliance display indicates an 'Incorrect voltage' error, signifying a problem with the electrical power supply to the Siemens EQ900 TQ900 Coffee Machine.
Milk froth quality varies widely — Milk type selection
The quality of milk froth produced is inconsistent, often due to the type of milk or plant-based alternative being used.
Milk froth is too cold — Milk temperature issue
The milk froth being dispensed by your Siemens EQ900 TQ900 Coffee Machine is not warm enough, resulting in a less enjoyable beverage.
Milk system cannot be assembled or disassembled — Incorrect procedure
You are experiencing difficulty in correctly assembling or disassembling the milk system, suggesting an issue with the sequence of steps or a misalignment of parts.
Coffee has no crema — Coffee bean or grinder setting issue
Your coffee is lacking the desirable crema layer, which indicates a problem with the coffee beans themselves or the grinding level setting.
Appliance is not dispensing drinks — Water system issue
The coffee machine is not dispensing any beverages, indicating a problem with the water supply or internal water pathways.
Appliance is not dispensing hot water — Milk system blockage
The coffee machine is failing to dispense hot water. This can occur if the milk system, which may share components with the hot water dispenser, is soiled or blocked.
Appliance is not dispensing milk froth — Milk system issue
The Siemens EQ900 TQ900 Coffee Machine is unable to produce milk froth. This issue often points to blockages, incorrect assembly, or insufficient milk supply.
No milk intake by the milk system — Milk system assembly or supply problem
The milk system is not drawing in milk, preventing the creation of milk-based beverages. This can be caused by incorrect assembly, low milk levels, or a mispositioned milk tube.
Display shows 'Please clean brewing unit.' — Brewing unit needs maintenance
The appliance display indicates that the brewing unit requires cleaning. This message appears when the unit is soiled or its mechanism becomes stiff, affecting performance.
Display shows 'Please fill water tank.' despite the fact that the water tank is full — Water supply blockage or sensor issue
The display prompts to fill the water tank, even though it is visibly full. This indicates a problem with the tank's seating, water quality, filter, or an internal sensor.
Display shows 'Please insert brewing unit.' — Brewing unit not properly installed
The appliance display indicates that the brewing unit is not correctly inserted, preventing the machine from operating.
Coffee or milk froth quality varies widely — Limescale build-up
The quality of dispensed coffee or milk froth is inconsistent. This common problem can be caused by limescale build-up affecting the internal components of the appliance.
Display shows 'Re-start appliance' — Internal fault detected
The appliance display prompts you to restart the machine, indicating that an internal fault has been detected that requires a system reset.
Appliance only dispenses water, not coffee — Brewing issue
The coffee machine is dispensing only hot water instead of brewing coffee. This can be caused by problems with the bean supply, the grinder, or the brewing unit.