---
title: "Refrigerator cooling and defrost repair"
description: "Liebherr refrigerator cooling and defrost repair: the cabinet runs but does not hold temperature, or holds it in one compartment and not the other."
url: "https://liebherrmiami.support/services/refrigerator-cooling-and-defrost-repair/"
date_modified: "2026-08-27"
---


# Liebherr refrigerator cooling and defrost repair

### Cold is moved, not only made

These cabinets make cold in one place and distribute it. That means most “not cooling” calls are about distribution — a fan, a vent, a defrost circuit that has stopped clearing the evaporator — rather than about the compressor. It is the cheaper half of the diagnosis and it is where an honest visit starts.

### The frost that is not a problem

Liebherr says plainly that humidity in the refrigerator compartment condenses on the rear wall and freezes while the compressor runs, then defrosts during the idle period and drains away for evaporation. Somebody calls about that most weeks. It is worth knowing before you pay anybody to look at it.

What this involves

One compartment warm while the other holds

Frost where the manual says there should be none

Temperature that drifts rather than fails outright

Establish which compartment, and by how much

A separately placed thermometer beats a display. What the appliance thinks it is and what it actually is can differ, and the gap between them is itself a clue.

Look at the airflow before the machinery

Cold in these cabinets is moved, not just made. A blocked vent, a cabinet packed to the back wall, or a fan that has slowed will produce exactly the symptoms of a failing system at a fraction of the cost.

Test the defrost circuit through its cycle

Heater, sensor and the control that decides when to run it. A defrost circuit that has stopped shows up as frost that never clears and a slow loss of cold, not as a sudden failure.

Confirm the sealed system is not the answer

Pressures and temperatures across the circuit. This matters because it is the difference between a $185 conversation and a very different one, and it should be settled with measurements rather than assumed either way.

Cold is moved, not only made

These cabinets make cold in one place and distribute it. That means most “not cooling” calls are about distribution — a fan, a vent, a defrost circuit that has stopped clearing the evaporator — rather than about the compressor. It is the cheaper half of the diagnosis and it is where an honest visit starts.

The frost that is not a problem

Liebherr says plainly that humidity in the refrigerator compartment condenses on the rear wall and freezes while the compressor runs, then defrosts during the idle period and drains away for evaporation. Somebody calls about that most weeks. It is worth knowing before you pay anybody to look at it.

### There is frost building up inside. Is that the defrost system?

It depends where. Ice on the rear wall of the refrigerator compartment that appears while the compressor runs and clears while it rests is described by the maker as completely normal — that is condensation freezing and then draining away. Frost that never clears, or frost in a NoFrost freezer compartment, is the defrost circuit and is worth a visit.

### One side of my Side-by-Side is warm.

Then you have two appliances and one of them needs attention. Each column has its own system, its own plate and its own model number, and the working one stays working while the other is repaired. Give us the number from the half that has stopped.

### It was fine until we filled it before a holiday.

A cabinet packed tight enough to block the vents cannot move cold around, and it will read warm in exactly the places air can no longer reach. Unpack the back and the top vents, give it a few hours, and see. This is a real and common cause, and it costs nothing to rule out.

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