Tristar
Steam Leak / Partial Blockage
Coffee maker produces a lot of steam but very little liquid coffee.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Blocked outlet at brew head, Scale in thermoblock causing steam pockets, Loose or cracked outlet hose, Faulty pressure relief valve
How to Fix / Troubleshooting
Safety first: Unplug and allow the unit to cool completely before opening.
- Clean brew head: Remove the filter basket or capsule holder and clean the outlet holes thoroughly with a pin or brush.
- Descale: Run a descaling cycle to clear internal restrictions that cause steam formation instead of smooth water flow.
- Inspect outlet hose (advanced): Access the hose from the thermoblock to the brew head. Check for kinks, cracks, or loose connections. Replace damaged hoses.
Note: Excessive internal steam can stress seals; address blockages promptly.
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Repair Difficulty
Hard
4/5
Required Part
Brew Head Outlet Hose and Pressure Relief Valve
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