Pumps are meant to have water flow.
- If the pump in your machine makes a loud noise when you turn it on, check to make sure that the reservoir is full, or that the water is turned on for machine’s with direct water sources.
- It could be that your grounds are too coarse, letting water flow too quickly. The quick way to troubleshot this is to use more finely ground coffee.
- The boiler in boiler machines should have water in it too, so check if you need to prime the pump to put water into the boiler.