The answer first
For a LBD unit: the single most common cause of this fault is a defrost drain frozen shut. Melt water that cannot reach the drip tray backs up, finds the lowest point in the cabinet, and eventually runs out over the door sill. That is the same list the brand-generic page carries, in a different order.
What an owner actually sees on a LBD unit
- Standing water under the crisper drawers — The classic blocked-defrost-drain signature. It collects at the lowest point in the liner. Read this one against the LBD models listed below.
- The drip tray under the unit is dry when it should not be — Melt water is going somewhere else, and where it is going is the leak.
- Water appearing in the drawer below a bottom-mount freezer — A drain that has iced over in a bottom-mount layout dumps into the freezer basket first.
- Water appears only every few days rather than continuously — That rhythm matches the defrost cycle, which is itself most of the diagnosis.
- NEAR MISS: the cabinet is also warm — Then the leak is a symptom of a cooling fault, and the cooling page is the right one to read first.
Causes, most likely first on the LBD line
- A defrost drain blocked with ice or debris — Ranked first by a wide margin. Every automatic-defrost refrigerator makes melt water on a cycle, and the only path out is a narrow drain that clogs with food fragments and then freezes solid. Nothing in how the LBD line is put together changes where this sits.
- A failed water inlet valve — A valve that no longer closes fully drips continuously and quietly. It shows as a damp back wall and a puddle that returns however often it is mopped.
- A cracked water reservoir or dispenser line inside the door — Last, because it is the least common. It shows as water in the door shelves rather than at the back.
The checking order
- Look into the freezer for a sheet of ice on the floor of the compartment — Ice that keeps rebuilding after you chip it away means the drain below it is frozen. The LBD layout is the reason it comes first here.
- Watch whether the leak follows the ice-maker cycle — A puddle that appears after each harvest is a fill-tube fault and not a drain fault.
- Ask whether there has been a power cut or a door left open — A one-off melt load explains a one-off puddle and needs no repair at all.
Before any panel comes off
Safety
Unplug the appliance or switch off its breaker before a panel comes off, and dry the floor before you kneel on it; stored charge outlives the switch. Close the water supply at its valve before touching any fitting, and do not chip at ice with a knife or a screwdriver — the drain tube and the liner puncture easily.
Models in the LBD family
Reference| Model number | Family key |
|---|---|
| LBD-145 | bangson:refrigerator:lbd |
| LBD-199 | bangson:refrigerator:lbd |
| LBD-99 | bangson:refrigerator:lbd |
The line between a fix and a call
Call when the drain has been flushed, the trough checked, the tray emptied and the cabinet levelled and water still returns. What is left is behind the evaporator panel. Call the same day if water is reaching an electrical connection or running into a wall cavity.
Nearest pages of this class for the LBD line
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