Content status: Verified
Probe/sensor error or defective probe on older controllers.
Model compatibility: Liebherr display alerts can vary across series and model years, so Er may mean something different on another appliance or generation. Confirm it against your model documentation and record the full model number before acting.
What this code means
Probe/sensor error or defective probe on older controllers.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Frequently asked questions
Probe/sensor error or defective probe on older controllers.
Er is catalogued here for Legacy refrigerator / wine / freezer. Always confirm the meaning against your exact model documentation before acting.
Book independent diagnosis if Er returns after basic safe checks, if temperatures drift, or if you are unsure whether the alert is model-specific. Do not open sealed refrigeration or control assemblies yourself.
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