The short answer
The usual source is melt water that could not get to the drain pan, and the usual cause is a blocked drain line. Nothing in the homeowner sequence needs the unit opened or the supply cut. On this kind of cabinet this is a high-volume budget line from a major maker, so the design is conventional and the wear points are the conventional ones.
What you actually observe
- The drain pan at the back is dry while the floor is wet — Conclusive: water is leaving the unit before it reaches the pan.
- Water running down the inside back wall — Normal during defrost, a fault when it reaches the shelves instead of the drain hole.
- A smell of damp or mould near the base — Standing water somewhere it cannot evaporate, usually under a drawer or beneath the liner.
- NEAR MISS — the ice maker area is wet but the floor is dry — An ice-maker fill fault behaves differently and belongs on the ice-production page.
Likely causes in order
- Defrost drain blocked with debris or frozen shut — Ranked first: A partial blockage freezes over during the next defrost and becomes a full blockage without any warning. It sits at the top here because this is a high-volume budget line from a major maker, so the design is conventional and the wear points are the conventional ones.
- Cabinet out of level so water runs forward — Second: Levelling faults produce leaks that appear after the unit has been moved, which is a useful clue in itself.
- Door seal leaking and condensing air inside the unit — Third: A gasket fault and a drain fault together is a common pairing, because each makes the other worse.
Check in this order, and why
- Put a spirit level across the top of the unit — Front-to-back level decides which way melt water travels, and the answer is frequently the whole diagnosis.
- Look for evidence of a previous repair — Mismatched fasteners, a newer part or tape where tape should not be all tell you where this unit has already been.
- Check the drain pan at the back of the unit — A dry pan with a wet floor proves the water never got there; a brimming pan says something else is wrong.
Owner-side steps
- Chip nothing: melt the ice sheet under the drawers — Empty the compartment and let the ice melt naturally, or use warm cloths. Prising it out cracks the liner.
Tools: warm cloths, towelsAbout 30 min
- Flush the drain again a week later to confirm it stays clear — A drain that reblocks quickly is telling you there is debris further along than warm water can reach.
Tools: warm waterAbout 15 min
- Level the unit front to back — Adjust the front feet until a level reads flat side to side and very slightly back front to rear.
Tools: spirit level, adjustable spannerAbout 20 min
- STOP HERE if the next step needs a meter on live terminals — That is where the homeowner sequence ends and a technician begins, and the boundary exists for good reasons.
Safety first
Safety
Pull the plug, or trip the breaker that feeds the outlet, before any panel comes off; a stored charge can sit in a capacitor long after the lights go out. The sealed refrigeration circuit is not homeowner-serviceable — refrigerant is under pressure, the tubing is thin, and opening it is licensed work. Nothing in the sealed circuit is an homeowner job: it is pressurised, and the law treats venting it as a violation in its own right.
When to call a technician
Call once the drain is confirmed clear and the floor is still getting wet, because the remaining candidates are a cracked trough or a failed liner and neither is an homeowner repair. Book a visit as soon as a check needs an instrument rather than an observation, because that is the point where guessing starts costing money.
Nearest pages of this class
Generalized information
Treat this as the general case. Where a family or model page exists, it is linked below and it is the page to trust for dimensions, fasteners and parts. Part numbers, harness colours and service-mode entry codes are not published here for exactly that reason. It does not address units still inside a dealer warranty, where opening a panel yourself can end the cover.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
