Liebherr fridge freezer freezer frosting up badly
Hoping someone can help with my Liebherr fridge freezer (CNd 5223) — the frost-free freezer is caking up with thick ice even though it's meant to be frost free. Grateful for any pointers, thanks.
1 Answer
If a frost-free Liebherr is building up heavy ice, the usual causes are either warm moist air getting in, or the automatic defrost system not clearing the evaporator properly. The model details help, but the fault still needs narrowing down a bit.
1. Check the door seal and door closing - Make sure the freezer door is shutting fully and not being held open by a drawer, shelf, or food pack. - Inspect the door seal all the way round for gaps, splits, hardened sections, or areas not gripping the cabinet. - Look for frost concentrated near the door opening, which often points to an air leak.
2. Check where the ice is forming - If the ice is mainly on the back panel or behind the internal rear cover, that more often suggests a defrost fault. - If it is around drawer fronts, door edge, or top of the compartment, suspect the seal or door use first.
3. Listen for the fan - Frost-free freezers rely on an evaporator fan. If the fan stops, cold air circulation is affected and ice can build up oddly. - If it is unusually quiet, or you hear the fan catching on ice, that is useful evidence.
4. Fully defrost it - Switch off and leave the freezer doors open for at least 24-48 hours to completely clear hidden ice. - This can temporarily restore operation and helps confirm whether the evaporator has iced solid.
5. If the fault returns quickly - Then the likely suspects are the defrost heater, defrost sensor/thermistor, wiring, control fault, or less commonly a drainage issue.
Isolate the appliance from the mains before removing any covers or inspecting internal parts. If it needs electrical testing or work on sealed refrigeration parts, use a qualified appliance engineer.
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This answer was generated automatically by the WhitegoodsHelp AI Assistant. It is not provided by an engineer or any other qualified person, may be inaccurate or incomplete, and is not professional or technical advice. Do not rely on it. Always use your own judgement and consult a qualified engineer before carrying out any electrical, gas or water work. Use is entirely at your own risk. See our full Terms of Use.
SAFETY FIRST: READ BEFORE ACTING ON THIS GUIDANCE
Never work on a live appliance
Always unplug it at the mains before going near it with any tools.
Never attempt gas work
By law, gas appliances must only be worked on by a Gas Safe registered engineer. If your fault involves gas, stop and call a professional. Do not attempt it yourself.
Watch for sharp edges
Outer panels are smooth, but internal parts have sharp machined edges. Wear protective gloves and arm sleeves.
Water appliances can leak
Turn off the water supply before disconnecting any hoses.
Know your limits
If you are not confident testing or working inside the appliance, stop and call a professional.
AI guidance, not guaranteed
This response is generated automatically by the WhitegoodsHelp AI Assistant. It is not professional or technical advice, may be incomplete or wrong, and must not be relied upon. Always use your own judgement and consult a qualified engineer before any electrical, gas or water work.
This is general information only and is not professional advice. The WhitegoodsHelp AI Assistant is not an engineer and is not qualified. See our full Terms of Use.
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