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A leaking S unit is telling you where its meltwater is going, not that it is broken. How the cabinet is packed decides where the melt goes, and on a compact line that is the commonest reason for a puddle, so the ranking below departs from the brand-generic order. The first check on this line is the simplest one - empty the cabinet and look at the channel - and the cause at the bottom of the list is the only one that is not owner work.
The observables
- Standing water on the compartment floor — Enough to see, sitting in the channel rather than spread across the base.
- Water only after the unit has been open or switched off — Nothing during normal running, then a puddle after a stop.
- A damp patch under the machinery end — Spread rather than pooled, and it dries and returns on its own rhythm.
- NEAR MISS - ice inside but no water anywhere — That is a frosting fault, not a leak, and it belongs on the freezing and ice pages rather than this one.
Causes, most likely first on this line
- Contents damming the drain trough — First here, and by a wide margin: packaging is the usual culprit: a bag or a carton settles into the channel, water backs up behind it, and nothing about the machine is faulty at all.
- The door not latching fully — Second on this line: a door held a few millimetres open by a basket, a bottle or a hinge that has dropped lets room air circulate continuously. The cabinet stays cold enough that nobody notices, and the water it condenses runs out at the bottom of the opening.
- A blocked condensate drain path — Third: a restricted drain does not stop the water, it delays it. The melt pools where it cannot be seen, then arrives all at once as a puddle that looks far bigger than the fault behind it.
- A split drain hose or a failed seam — Last on the list, and the only one here that is not owner work: a failed seam leaks the same amount whatever you do to the drain, which is what separates it from everything above. It is also the fault that wets insulation, so it gets worse rather than staying level.
The order to work in
- Empty the cabinet and look at the channel — Take everything out and look along the floor channel for a bag, a wrapper or a container sitting in it. Then reload leaving the channel and the cold plate clear.
- Watch the door close on its own — Reload the cabinet and try again. If the door only fails to close when the unit is full, the contents are the cause.
- Clear and test the compartment drain — Empty the compartment, find the outlet in the floor, and pour a little warm water at it. If it stands rather than draining, that is the fault and nothing further needs checking.
Before any panel comes off
Safety
Unplug the appliance or switch off its breaker before removing any panel; a capacitor can hold a charge after the power is off. Water and the electrical end of a refrigerator do not mix, so dry the floor and isolate the unit before you kneel down beside it.
When this stops being owner work
Two conditions make it a call rather than a check: water that returns with the compartment empty and the drain proven clear, and any water at the electrical end. A third is a leak that has already soaked the base, because wet insulation does not dry out in place.
Same line, other symptoms
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
