Liebherr Loss of Backup Power / RTC Retention

Oven clock and timer reset every time power is switched off briefly or there is a minor power dip.

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

Failed backup capacitor on control board, Design without memory retention, Faulty control module

Safety first: Disconnect power before accessing electronics.

Actions:

Some models do not retain settings after power loss; verify in the user manual whether this is normal behavior.
If retention is expected but lost, the backup circuit on the control board has likely failed; the only practical fix is control board replacement.

Hard 4/5

Electronic Power Control Module

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