Ascaso Pump Not Energized or Seized

Ascaso coffee machine's pump is very quiet and no water flows when brew switch is pressed.

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

Faulty brew switch or keypad, Open pump coil, Loose pump wiring, Failed control board output

How to Fix / Troubleshooting

Basic checks:

Listen for click: When pressing brew, listen for a relay click inside the machine. No click may indicate a control or switch issue.
Check switches: Test the brew switch or keypad for continuity or proper operation.

Internal checks (unplug first):

Inspect pump wiring: Ensure the pump connectors are secure and not burnt.
Measure pump coil: Use a multimeter to check resistance across the pump terminals. An open circuit indicates a failed pump.
Control board: If the pump and switch are good but no voltage is supplied to the pump during brew, replace the control board.

Repair Difficulty

Hard 4/5

Required Part

Vibration Pump Assembly / Brew Switch

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