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Reduced cooling / High energy use

Reduced cooling or high energy consumption — Ventilation obstructed

Liebherr · Built-in Refrigerator-Freezers

What does Reduced cooling / High energy use mean?

If the appliance's air circulation is restricted, its ability to cool efficiently can be compromised, leading to higher energy use and potentially less effective cooling. This is often caused by blocked air vents or insufficient space around the unit.

Common Causes

  • Blocked air slits in the internal fan.
  • Obstructions on the rear wall of NoFrost models.
  • Insufficient ventilation space around the appliance.
  • Overloading the appliance with too much food, preventing air flow.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the air slits of the fan inside the appliance and ensure they are not blocked by food packaging or debris.

  2. 2

    For NoFrost models, verify that the bottom drawer is correctly positioned and that no items are blocking the air slits on the rear wall.

  3. 3

    Ensure the appliance is installed with adequate clearance around it, particularly at the rear and top, to allow for proper air circulation.

  4. 4

    Avoid overfilling the Refrigerator or freezer compartments, which can impede internal air circulation.

Browse all codes in this manual (14)
Verified technical data. Last updated: April 2026

Related Faults

Acoustic warningAcoustic warning sounds — Door left open too longAlarm symbol flashingAlarm symbol flashing with acoustic warning — Freezer temperature too highAppliance not workingAppliance does not work — No power or switched off
Source: Liebherr Built-in Refrigerator-Freezers
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