What no cooling usually means on an LG
On an LG refrigerator, the single most useful observation is whether the compressor is running. If the cabinet is silent and both compartments are warm, the sealed system is the leading suspect on this brand and the repair route runs through the manufacturer warranty. If the freezer is cold and the fridge is warm, the fault is airflow instead: a fan or a frosted duct. Establish which case you are in before anything else.
What you are seeing
- Both compartments are warm and the cabinet is unusually quiet.
- The fridge is warm while the freezer stays properly frozen.
- Ice cream softens but the freezer still looks frosty.
- Cooling recovers for a day after the doors are left open, then fails again.
- Not this fault: Only the ice maker has stopped - read the ice production page instead.
- Not this fault: The panel is dark and nothing runs - that is a supply fault, not a cooling one.
Most likely causes, in LG order
- Sealed system or compressor not running — Why ranked: First on this brand when both compartments are warm and the cabinet is silent. It is also the case where warranty coverage matters most, so it is worth establishing early.
- Evaporator fan not running, or its duct blocked — Why ranked: Ranked second because it produces the very common warm-fridge, cold-freezer pattern that owners find most confusing.
- Defrost system failed, frosting over the evaporator — Why ranked: It gives the distinctive pattern of cooling that recovers after the doors are left open and then fails again days later.
- Door not sealing, or left ajar by a drawer or a stored item — Why ranked: Common, free to correct, and it explains a machine that runs constantly and still cannot hold temperature.
- Condenser airflow blocked, or the appliance in a very warm space — Why ranked: Last, but worth clearing because it makes every other fault worse and it is entirely owner-serviceable.
What to check, in order
- Stand in a quiet kitchen and listen, then feel the lower rear of the cabinet. — Because: It settles rank one, and a silent, cold compressor area changes the whole conversation including who pays.
- Compare the two compartments with a thermometer left in each overnight. — Because: Warm fridge with a cold freezer is airflow; both warm is the sealed system.
- Open the freezer and listen for the evaporator fan; check for frost on the rear panel. — Because: Ranks two and three are both behind that panel and both are audible or visible.
- Check both door seals with a sheet of paper and look for anything holding a door open. — Because: Rank four costs nothing and is a common cause of a machine that never stops running.
Checks you can do safely
- With the kitchen quiet, listen at the back of the appliance and feel the lower rear panel for warmth. — N: 1 — Tools: None — Time: quick
- Put a thermometer in each compartment and read them in the morning without opening the doors first. — N: 2 — Tools: Two thermometers — Time: overnight
- Close a sheet of paper in each door in turn and pull. If it slides out freely, the seal is not gripping there. — N: 3 — Tools: Paper — Time: quick
- Pull the appliance out and vacuum the condenser area, then confirm there is clearance behind and above it. — N: 4 — Tools: Vacuum — Time: moderate
- Stop rule: Stop here. Removing the freezer rear panel to reach the fan, the defrost heater or the evaporator is service work.
Before you open anything
Safety
Unplug the refrigerator or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. A refrigerator holds food safely at 40 °F (4 °C) or below and a freezer at 0 °F (-18 °C) or below - discard anything that has been warmer for long. Never chip frost from an evaporator with a blade; you can pierce a refrigerant line. A refrigerator is a heavy appliance - walk it out slowly with a second person.
When this becomes a service call
Both compartments are warm and the compressor area stays cold and silent. The freezer is cold and the fridge is warm with the seals and vents confirmed clear. Cooling recovers after a manual defrost and then fails again within days. The appliance runs continuously and still cannot hold 40 °F (4 °C).
Nearest pages
What this page does not cover
This is generalized information for LG refrigerators as a group. It does not separate French-door from side-by-side or top-mount layouts, which differ in airflow, and it decodes no model-specific codes. Where a family- or model-specific page exists it supersedes this one; no narrower page sits beneath this scope yet.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
