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Patricia SimsJul 31, 2025
Why is my DeLonghi EC 250 making a loud pump noise?
- BBrooke KiddJul 31, 2025
Loud pump noise in your DeLonghi Coffee Maker can occur for several reasons. If it's the first use, there may be air in the system, so carry out the "first use" cycle. The water tank might be empty, so fill it. Also, the tank could be inserted incorrectly, preventing the valve on the bottom from opening; press the tank lightly to open the valve.