--- title: "Ice building up inside" description: "Liebherr ice building up inside — where the ice is decides whether this is a problem at all." url: "https://liebherrmiami.support/symptoms/ice-building-up-inside/" date_modified: "2026-08-27" Appliance type: "Freezers, Refrigerators" --- # Liebherr ice building up inside ### The fastest diagnosis is what the appliance is telling you Look at where it is and whether it clears. Ice on the rear wall of the refrigerator that appears while the compressor runs and melts while it rests is documented as normal — that is condensation freezing and then draining away. ### Where the ice is, is the diagnosis Rear wall of the refrigerator, appearing and clearing with the compressor cycle: documented, normal, nothing to do. A NoFrost freezer accumulating frost: the defrost circuit. Water pooling instead of draining: the drain. Three different answers to what looks like one symptom. Normal rear-wall condensation Published by the maker as completely normal, including the fact that it defrosts during the compressor idle period and drains for evaporation. A blocked defrost drain The same condensation with nowhere to go, which is when normal becomes water in the bottom of the cabinet. The defrost circuit in a NoFrost compartment Frost that never clears is the heater, the sensor or the control that runs them. A door that no longer seals Humid air entering continuously freezes where it meets the cold. Watch it over a full cycle Normal rear-wall ice clears while the compressor rests. Ice that never clears does not. Look for water in the bottom That is the drain rather than the ice. Paper test the doors Humid air entering is the commonest cause of ice in the wrong place. Some of it is documented as normal What it usually means On the rear wall of the fridge In a NoFrost freezer compartment Thick enough to touch shelves or drawers The fastest diagnosis is what the appliance is telling you Look at where it is and whether it clears. Ice on the rear wall of the refrigerator that appears while the compressor runs and melts while it rests is documented as normal — that is condensation freezing and then draining away. Where the ice is, is the diagnosis Rear wall of the refrigerator, appearing and clearing with the compressor cycle: documented, normal, nothing to do. A NoFrost freezer accumulating frost: the defrost circuit. Water pooling instead of draining: the drain. Three different answers to what looks like one symptom. ### There is always ice on the back wall. Is my fridge failing? Almost certainly not. The maker describes exactly this and calls it completely normal: humidity condenses on the rear wall and freezes while the compressor runs, then thaws while it rests and drains away. What is worth a look is ice that never clears, or water collecting instead of draining. ### My NoFrost freezer has frost in it. That one is worth a call. A NoFrost compartment is designed not to accumulate frost, so frost accumulating means the defrost circuit has stopped doing its job — and left alone it becomes a cooling problem, because ice on an evaporator insulates it. --- **[Read full article: Ice building up inside](https://liebherrmiami.support/symptoms/ice-building-up-inside/)**