The short answer
On an LG freezer, a leak and a sheet of ice on the compartment floor are usually the same fault seen at different stages: the defrost drain has blocked, and the meltwater freezes where it collects instead of leaving. Water reaching the floor outside the cabinet is the same water having finally found a way out, not a separate problem.
Causes, ranked for this Lg freezer
- Defrost drain blocked with ice or debris — Why: Every frost-free freezer melts frost on a schedule and that water must leave through a small drain; once it blocks, the water freezes in the compartment and eventually finds the floor.
- Door seal admitting humid air — Why: A poor seal loads the evaporator with moisture, so each defrost produces more water than the drain can carry — it causes the blockage rather than being one.
- Ice maker fill tube or inlet valve — Why: This path is pressurised only during a fill, so it produces an intermittent leak that is easy to blame on the drain until the timing is noticed.
- Cabinet out of level — Why: The drain trough relies on gravity, so a cabinet tilted the wrong way collects water at the wrong end and it freezes there instead of draining.
- Drain pan displaced or overflowing — Why: Least common, and usually the result of the unit having been moved; it produces water at the back rather than inside the compartment.
What to check, in order
- empty the compartment and look for ice on the floor and under the drawers. — Because: it confirms the blocked drain, which is the top-ranked cause by a wide margin.
- check the cabinet is level, with the front slightly higher than the back. — Because: it costs nothing and it changes whether the trough can drain at all.
- close the door on a strip of paper at several points and check the drag. — Because: a poor seal is what overloads the drain, so fixing the drain without it means the ice returns.
- note whether any water coincides with an ice-maker fill. — Because: timing separates the supply path from the drain path with no disassembly.
Checks you can safely do yourself
- Empty the compartment into a cooler and inspect the floor and the area beneath the lowest drawer for a sheet of ice. — Tools: a cooler and a torch — Time: several minutes
- Switch the unit off with the door open for a day so all the ice melts, catching the water with towels as it clears. — Tools: towels — Time: an afternoon, mostly waiting
- Check the cabinet with a spirit level in both directions and adjust the feet so the front is slightly higher than the back. — Tools: a spirit level and a spanner — Time: several minutes
- Close the door on a strip of paper at the top, both sides and the bottom, noting anywhere it slides out with no drag. — Tools: a strip of paper — Time: several minutes
- Restore power and watch whether ice returns over the following weeks. Stop here: reaching the drain means removing the rear evaporator panel. — Tools: none — Time: an afternoon, mostly waiting
Before you open anything
Safety
unplug-before-service freezer-0f
Unplug the unit before removing any interior panel, and never chip ice from a drain or evaporator with a knife or screwdriver, since the tubing behind it punctures easily and that ends the repair permanently. Water tracking under the cabinet reaches the compressor compartment, so treat a persistent floor leak as urgent rather than cosmetic.
Where the owner fix ends
Levelling the cabinet, checking the seal and manually defrosting are owner work. Call a technician when ice returns within weeks of a full manual defrost, because the drain itself is blocked and reaching it means removing the rear panel; when water coincides with an ice-maker fill, since the valve needs metering; and when the compartment misses the safe holding temperature quoted above.
Nearest pages of the same kind
Generalized information — what this page does not cover
family model
This page is generalized information about LG freezers and covers upright, drawer and freezer compartments in combination units together, whose drain routes and evaporator panels differ. No family-level or model-level page exists in this reference yet; when one is published it will be linked here.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
