The short answer
On the BSBS family water inside the cabinet and water on the floor are two different faults. The first is a blocked defrost drain; the second is usually a supply connection. The brand-generic page runs them together and this one does not.
What you observe
- A sheet of ice on the floor of the compartment — Same fault caught later, once the pooled water has frozen.
- Water on the floor at the front — The cabinet floor slopes forward, so a rear leak arrives at the front.
- A crackle of ice under the drawers before any water appears — The early stage of a blocked drain, caught before the water reaches the floor.
- Water appearing a day or two after the unit was moved — A displaced drain pan or a strained supply connection rather than a drain fault.
- NEAR MISS - condensation on the outside of the doors — That is humidity and seal performance, not a leak.
Causes, most likely first on BSBS
- Water supply connection or line — Ranked first on the BSBS family: made up behind the cabinet and pushed against the wall on installation, so it chafes and weeps out of sight. That is a family-level property rather than a model-level one, which is why it leads here. This moves above blocked defrost drain, which leads the brand-generic order, because this family is a single build with fixed access points.
- Blocked defrost drain — Second: defrost melt water has exactly one way out, and when that channel closes the water simply backs up into the lowest part of the cabinet.
- Drain pan cracked or displaced — Third: the pan is the end of the drain path and is disturbed whenever the unit is moved, which makes a recent move the thing to ask about.
- Door seals and condensation — Fourth: a seal that no longer meets lets warm air in, which condenses and runs down the inside of the cabinet.
- Ice maker fill valve or its tubing — Last: last, and only relevant where a module is fitted, but a weeping fill valve leaks steadily rather than in step with the defrost cycle.
Check in this order, and why
- Empty the compartment and find the drain opening — It is the likeliest cause and it is visible once the shelves are out.
- Flush the drain channel with warm water — It confirms the diagnosis and clears most blockages in one step.
- Check the cabinet is level and tilted very slightly back — A cabinet leaning forward sends melt water towards the door instead of the drain.
- Test the seals with a sheet of paper around each door — Last, because it explains condensation rather than standing water.
Before you open anything
Safety
Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. Shut the water supply at the stop tap before touching any fill line, and treat the sealed system as off limits: refrigerant work is licensed work.
When to call a technician
Call when the drain keeps blocking after being cleared, because that usually means the drain heater or the defrost circuit is at fault rather than the channel itself.
Other BSBS pages
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