The short answer for these models
Refrigerators make water on purpose and then dispose of it, and almost every leak is a disposal failure. The melt runs off the cold surface, down a channel, through a small hole and into a tray. Find which part of that path is blocked and you have found the leak. Where this departs from the brand-level page is the ranking. A built-under cabinet has to shed its heat through one small grille, so anything that restricts that grille shows up as a fault long before it would on a freestanding unit, so on a BUFK unit the clearance and condenser checks lead.
What you actually see
- Which form your BUFK unit is — settle this first — Check whether the unit sits in a cut-out. If it does, its heat leaves through one grille, and that grille outranks everything inside the machine.
- A puddle on the floor at the front — Water that has run forward over the door sill, usually from an overfilled channel or an overflowing tray.
- Ice building in the base of the compartment — A frozen puddle inside is a blocked drain caught earlier in the same story.
- Water only after a defrost or a power cut — It appeared once after the power was off for a while and has not come back, which is an event and not a fault.
Causes, most likely first on this family
- The cabinet is not level, or the drain channel is not sloping — Water only runs where gravity sends it. A cabinet tipped forward sends melt over the sill instead of down the channel. The ranking moves here for a reason particular to these models: how the unit is built changes what this finding means. That is what puts the clearance and condenser checks ahead of everything else on the list.
- The supply line, the fill valve or an internal joint — Last because a genuine supply leak is rare, continuous rather than cyclical, and obvious the moment you look behind the cabinet.
Check in this order, and why
- First — find the drain hole and test it — It sits at the lowest point of the cold compartment, usually behind or under the bottom shelf. Pour a little warm water in and watch whether it goes. On these models this is the step the construction changes: what you found at the step above decides how much weight to give what you find here.
- Second — check the cabinet is level and tipped very slightly back — A unit tipped forward will send its melt water over the sill no matter how clear the drain is.
Before you open anything
Safety
Isolate the unit at the plug or the breaker before any panel is opened, because a capacitor can hold a charge after the power is off. Water and a live appliance do not mix: dry the floor before you work, and stand on something dry. Empty the cabinet before moving it, and get help with the weight rather than walking it on wet tiles.
Where the owner job ends
Book the visit once the drain, the seal, the tray and the levelling are all clear and water keeps returning, because the rest of the path runs behind the lining. Call at once if water is reaching a socket or a neighbouring appliance — at that point it has stopped being a housekeeping problem.
The other symptoms covered for this family
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
