Coffee machine leaks into drip tray - Compatible with - EQ.6 TE651508DE Plus s100
Water in the drip tray or a leak inside the machine usually comes from a valve that no longer seals or is scaled up.

Ceramic valve 12015639 for Siemens EQ 6
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If the drip tray fills faster than usual or water seeps inside the machine, the most common cause is a leaking or limescale-clogged valve. Less often it's the brew unit that leaks.
Most common causes
- Leaking or clogged valve (expansion, check or solenoid valve)
- Valve clogged with limescale
- Leaking brew unit
- Worn valve gasket
How to find the right part
On the left, filter by your machine's brand and model. Only the parts that fit will show, each with its compatible models listed. If you're not sure, write to us.
Related parts
Valves and solenoids · Brew unit
Frequently asked questions
Why does the drip tray fill up so fast?
Between brews the machine releases residual pressure through a valve, so a little water in the tray is normal. But if it overflows after just a few coffees, the valve no longer holds and lets water through all the time. On DeLonghi ECAM it's usually the expansion valve, on lever machines the check valve in the circuit.
Can I replace the valve myself?
Yes, it's one of the simplest repairs. You take off the back or side cover, the valve is clipped or screwed into the circuit and you swap it in a few minutes, a Phillips and a torx screwdriver are enough. It's only trickier on built-in models, where you have to remove more covers.
Is the repair worth it?
Absolutely. A valve costs a few tens of euros, a new brew unit or a workshop visit start much higher. If the machine otherwise brews well, replacing the valve puts it back in service.
Related faults
Water under coffee machine · Coffee machine not pumping water

