Tristar
Internal Leak / Hose or Seal Failure
Water leaks from the bottom of the coffee maker during or after brewing.
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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
Cracked silicone hose, Loose hose clamp on pump or thermoblock, Leaking thermoblock gasket, Cracked water reservoir or tank seal
How to Fix / Troubleshooting
Safety first: Unplug the coffee maker immediately and dry any spilled water. Do not operate with an active leak.
- Check reservoir: Remove the Tristar water tank, fill it over a sink, and check for cracks or leaks around the outlet valve. Replace the tank if it leaks.
- Inspect base: Turn the unit upside down (after fully draining and drying) and remove the bottom cover. Look for water trails or mineral deposits to trace the leak source.
- Tighten connections: Check all hose connections on the pump, flow meter, and thermoblock. Tighten or replace hose clamps as needed.
- Replace damaged parts: Replace any cracked silicone hoses or worn O-rings/gaskets on the thermoblock connections.
Warning: Do not continue using the machine until the leak is fully resolved; water inside can cause electrical shorts.
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Repair Difficulty
Hard
4/5
Required Part
Silicone Hoses and Thermoblock Gaskets
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