Repair
Siemens repair in Aarhus
We repair Siemens fully automatic coffee machines in our workshop in Tilst — including the EQ series.
Siemens' EQ series is among the best-selling fully automatic coffee machines in Denmark, and we see them regularly in the workshop. Typical problems are a brew group that jams, leaks, or error codes on the display — all things we can diagnose and repair.
Models we repair
- Siemens EQ 300
- Siemens EQ 700 TQ707R03/02
- Siemens EQ6 Plus
- Siemens EQ6 Plus S500
- Siemens EQ6 Plus S700
- Siemens EQ6 S100
- Siemens EQ9
- Siemens EQ9 S300
- Siemens EQ9 S900
- Siemens EQ9 connect s900
- Siemens iQ700 CT636LES1/01
- Siemens iQ700 CT636LES1/05 built-in
Common faults on Siemens machines
- Siemens EQ 300 — Machine/brew cycle wrong
- Siemens EQ 300 — Won't start
- Siemens EQ 700 TQ707R03/02 — Brew/water routing fault
- Siemens EQ6 Plus S500 — Keeps asking for descale
- Siemens EQ6 Plus S500 — No water comes out; water audible inside
- Siemens EQ6 Plus S500 — Water drains to drip tray
What should you bring?
- The machine itself, ideally with the water tank emptied
- The power cable
- A short description of the problem — feel free to email us beforehand
Real Siemens repairs
See the full portfolio
Siemens EQ5 macchiato plus
Problem: Machine constantly displayed 'Descale now' even after descaling and the brew unit was blocked.
Solution: Scale sensors replaced, brew unit cleaned and lubricated. Descaling program reset and verified.
Siemens EQ6 / EQ6 Plus S100
Problem: A faulty ceramic valve, plus a separate machine that only produced cold coffee despite a working heater.
Solution: The ceramic valve was replaced on one unit. On another, the main board was identified as the cause of the cold coffee and replaced.
Siemens EQ6 Plus S700
Problem: Unusual noises at startup, intermittent faults and issues around the brew group.
Solution: The brew group was rebuilt/adjusted, and the machine was descaled and tested. On other S700 units, the ceramic valve and brew group were also serviced.
Siemens EQ9 S900
Problem: Water flow and brewing were affected by heavy scale in the ceramic valve.
Solution: The ceramic valve was cleaned and the water path checked.
Siemens EQ9 Plus Connect S700
Problem: The milk system wasn't working correctly.
Solution: The milk and water circuits were diagnosed and serviced.
Siemens EQ9 S300
Problem: Extensive faults in the water path and worn components.
Solution: The machine was serviced throughout, including the brew group, heater and ceramic valve.
Siemens EQ300
Problem: Several units with faults in the brew group, startup and front control panel.
Solution: The brew group was adjusted or rebuilt, and on another unit the touch/control board was replaced and the front panel serviced.
Siemens EQ6 Plus S300
Problem: A fault related to control/brew group on a used machine.
Solution: The main board and brew group were diagnosed with a view to rebuilding.
Siemens EQ6 Plus S500
Problem: Lukewarm coffee and unstable milk steam.
Solution: Control, heating and the water path were diagnosed; the machine was used to test compatible main boards and heater function.
Siemens EQ7
Problem: The grinder ran, but no water passed through the coffee.
Solution: The water path and brewing were diagnosed and the machine restored to service; on a later EQ7, the grinder and coffee outlet were also assessed.
Siemens CT636 / CTL636 Built-in
Problem: The machine wasn't producing coffee, gave dry grounds and faulted during startup.
Solution: The ceramic valve was replaced, and the small communication/translator board was replaced after extensive troubleshooting.

Siemens EQ 500
See the caseIs your Siemens machine broken?
Contact us today for a non-binding quote. Diagnostics cost 400 kr. and are deducted from the repair price if you go ahead.