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Short version: most of these leaks are defrost water that lost its route out. Start with icemaker fill tube overfilling or mis-aimed. If the water is clean, cold and keeps arriving with the appliance switched off, close the shutoff and treat it as a supply fault instead.
The symptoms, and the ones that mean something else
- Damp at the door edges or sweating on the outside of the cabinet — Condensation rather than a leak — the cabinet is meeting humid room air somewhere it should not.
- The drain pan under the cabinet is overflowing — A pan that has cracked, or a cabinet tilted forward so the pan cannot hold what it collects.
- Water pooling under the crisper drawers — The classic blocked-defrost-drain signature: water that should have run to the pan backs up into the lowest point of the fresh-food compartment.
- NEAR MISS — the floor is wet only when the dispenser is used — Spillage and drips at a dispenser are a use problem rather than a fault, and no part will fix them.
The ranking, and why it is this way round
- Icemaker fill tube overfilling or mis-aimed — This produces an intermittent leak that follows no obvious schedule, which makes it one of the more frustrating sources to pin down — until the ice around the tube is actually seen. Ranked ahead of the rest since it is both the likeliest and the only one that can be settled before anything is taken apart. A compact build trades margin for footprint, so the ranking is dominated by how and where it is used rather than by what is inside it.
- Blocked or frozen defrost drain — The blockage is usually at the very top of the tube, where a small plug of ice re-forms after each defrost, so clearing it is often a matter of warm water and patience rather than of dismantling anything. Second on the list — a real suspect, and the next one that can be settled by looking rather than measuring.
- Supply line, filter housing or fill valve leaking — Supply leaks behave differently from every other cause on this page: the water is clean and cold, it keeps arriving whether the unit runs or not, and it can put a serious quantity of water on a floor overnight. It ranks third: real, but rare enough that chasing it first wastes an afternoon.
- A gasket that no longer seals, so the cabinet sweats — A gasket that has stopped sealing turns the cabinet into a condenser: warm room air meets cold surfaces inside, gives up its moisture, and that water runs down the liner and out at the door. Last, because the three above explain most of what actually comes in on this fault.
The order that finds it fastest
- Look behind and above the icemaker for a build-up of ice — Ice anywhere other than in the mould or the bin means water is going where it should not. First, because it separates the top two causes in under a minute.
- Check under the crisper drawers for standing water — Water at the lowest point of the fresh-food compartment with a dry floor behind the cabinet means the drain, not the supply. Next: it confirms or clears the cause ranked second, and needs nothing but light.
- Check whether the water keeps arriving when the unit is switched off — Water that arrives regardless of the cycle is mains water, and the shutoff is the immediate answer. Third in sequence — useful, but rarely where the answer turns out to be.
What you can do yourself
- Clear ice from the bin and around the mould, then restart and watch one fill — One observed cycle tells you whether the fill is landing correctly.
About 20 min
- Empty the freezer floor and pour warm water slowly into the drain opening — Repeat until it runs freely; never push anything metal or sharp down the tube.
Tools: warm water, turkey baster or funnel, towelsAbout 40 min
- Close the water shutoff to the cabinet and see whether the leak stops — This is both the diagnosis and the first aid: it protects the floor while you arrange the rest.
About 15 min
- STOP as soon as the fault is narrowed to a part rather than a condition — Naming the part is the useful outcome of an owner check. Fitting it is the other half, and it is not the same job.
Read this before you start
Safety
Switch the power off at the plug or the breaker before anything comes apart, and leave it off while you work. A refrigerator carries a capacitor that holds a charge after the power is off, and the door switch is there to cut the fan for a reason — never defeat it to keep the light or the fan running while your hands are inside.
When this becomes a service call
Book the visit once the pan is seated, the gasket seals and the drain runs freely and water still appears. Note where it appears first — that is the single most useful thing you can hand a technician.
Pages next to this one
What is not on this page
A note on scope: this page treats KUL refrigerators as one class. A page written for your specific family or model line will carry what this one deliberately leaves out — component locations, fastener sizes and the disassembly order — and it takes precedence over this page for your unit.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
