Melitta Wet Pucks / Poor Compression

Used coffee grounds are very wet and sludgy in the grounds container.

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.

Possible Causes

Brew group piston seals worn, Incorrect grind setting, Brew pressure too low due to pump or valve issue, Brew group not reaching full compression position

How to Fix / Troubleshooting

Safety first: Unplug before removing the brew group.

Steps:

Adjust grind: Set the grinder slightly coarser to reduce overpacking.
Clean brew group: Rinse and lubricate the brew unit. Ensure the piston moves smoothly.
Inspect seals: Check piston seals for wear and replace if flattened or cracked.

If grounds remain excessively wet, the pump or brew valve may not be achieving full pressure and should be tested.

Repair Difficulty

Medium 3/5

Required Part

Brew Group Seal Kit

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