Eurotronic Display / Backlight Fault

Thermostat backlight or display flickers or is very dim, but device otherwise works.

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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.

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Possible Causes

Aging LEDs or LCD, Poor contact in display connector, Low battery voltage, Faulty display driver on PCB

How to Fix / Troubleshooting

Safety: Remove power or batteries before opening the housing.

  • Replace batteries: For battery models, install fresh batteries to rule out low voltage.
  • Check contrast/brightness settings: Adjust display settings in the menu if available.
  • Inspect display connector: Open the thermostat and gently reseat any ribbon cable or connector between the display and PCB.
  • Check for moisture: Ensure there is no condensation inside the display area.
  • Replace thermostat/display: If flicker or dimness persists, the display or driver is failing. Replace the thermostat or display module if separately available.
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Repair Difficulty

Medium 3/5

Required Part

LCD / Backlight Module
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