De'Longhi Control System Lockup

Unit displays temperature but does not respond to any commands from remote or panel (frozen controls).

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

Microcontroller glitch on main PCB, Static discharge, Faulty keypad or stuck button, Corrupted firmware

1. Hard reset: Unplug the unit for at least 15 minutes to fully discharge internal circuits.

2. Check buttons: Press each button on the panel to ensure none are physically stuck in the pressed position.
3. Try remote only: After reset, attempt to control the unit solely with the remote to see if the panel is the issue.
4. PCB replacement: If the unit repeatedly locks up, the main control PCB may need replacement.

Medium 3/5

Main Control PCB

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