To fix this, ensure that the Cappu Air valve is operating properly. If you need further assistance, call ESI at 1-800-310-5710.

First, ensure that the 3-ring restrictor is installed and free of clogging. Next, ensure that steam pressure is not above 1.6 bar. If you need further assistance, call ESI at 1-800-310-5710.

First, ensure that the tube and restrictor are not kinked or clogged. If the tube is free of obstructions, ensure that the steam valve is operating properly. If you need further assistance, call ESI at 1-800-310-5710.

To fix this, ensure that the brew chamber is not overfilling with coffee. If the o-ring continues to fail, check the upper piston o-ring groove for coffee build-up. Finally, ensure that the upper piston o-ring thumbscrew is not overly tightened. If you need further assistance, call ESI at 1-800-310-5710.

To fix this problem, try checking that the upper piston o-ring groove is free of coffee build-up. Next, try increasing "Press" in program parameter. Finally, ensure the brew chamber is not overfilling with coffee. If you need further assistance, call ESI at 1-800-310-5710.

The machine "knows" a cleaning has been achieved when the grounds container door has been opened and closed. If the door micro-switch is faulty, the power print board will not receive the signal that the door has been opened and closed. To fix this, ensure that the metal tab on the grounds container door is actuating the micro-switch. If the message does not go away, check the grounds container door micro-switch. If you need further assistance, call ESI at 1-800-310-5710.

There are four things that you can try to fix this problem. First, try cleaning the upper piston microsieve. If this doesn't work, check that the mains valve is operating properly. Next, check that the coffee valve is working properly. Finally, check that the flowmeter is working properly. If you need further assistance, call ESI at 1-800-310-5710.

There are three things you can try to resolve this issue. First, check the upper piston o-ring for cuts or excessive wear. If the piston o-ring is in tact, ensure the coffee valve discharge tube is not clogged. Finally, check that the brew chamber is not overfilling with coffee. If you need further assistance, call ESI at 1-800-310-5710.