What is a coffee machine's auxiliary electronic board
An auxiliary electronic board complements the main control unit of the coffee machine and handles a specific group of functions – for example, controlling the pump, heating, valves, or communication with the display and buttons. It receives signals from sensors and switches individual components accordingly, so the machine prepares coffee in the correct sequence of steps.
Signs of wear or failure
A faulty board manifests unpredictably – the coffee machine doesn't respond to button presses, gets stuck at one step of preparation, displays error codes, fails to start heating or the pump, restarts on its own, or stops working entirely. Intermittent faults are also common, appearing only at a certain temperature or after prolonged operation of the machine.
When it's time for a replacement
Damaged electronics can cause other parts that rely on its signal to malfunction, for example insufficient water heating or uncontrolled pump activation. Replacing the faulty board restores reliable and safe control of the coffee machine.
How to choose the right part
- Check compatibility in the product table according to your coffee machine model.
- Before replacing it, also check the connecting cables and connectors, which can cause similar symptoms.
Compatible with
- ECAM650.55.MS PrimaDonna Elite
- ECAM650.75.MS PrimaDonna Elite
- ECAM656.55.MS PrimaDonna Elite
- ECAM656.75.MS PrimaDonna Elite
| Compatible with | ECAM650.55.MS PrimaDonna Elite, ECAM650.75.MS PrimaDonna Elite, ECAM656.55.MS PrimaDonna Elite, ECAM656.75.MS PrimaDonna Elite |
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| Manufacturing company | De’Longhi Appliances S.r.l. |
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| Address | Via L. Galvani, 22, 31100 Treviso TV, Italy |













