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Water under a refrigerator is usually defrost water that has not reached its drain, not a supply leak. The blocked drain is the common answer, and the puddle position tells you far less than most people assume. On the BCD models the defrost drain and the supply connection sit at opposite ends of the cabinet, so establishing which one you have before moving anything saves the whole second half of this list.
Where the water shows up
- Damp or buckling flooring in front of the machine — A slow leak that has been running for a long time. The source matters less than getting it stopped.
- Water in the drain pan overflowing at the back — A pan overflowing at the back means either the pan is damaged or it is receiving far more water than a normal defrost produces.
- A puddle on the floor at the front of the cabinet — A front puddle is the least informative symptom on the page, because almost every internal leak arrives there eventually.
- Water pooling under the crisper drawers — Classic blocked defrost drain. Water that cannot reach the drain backs up and finds the lowest point inside the cabinet.
- NEAR MISS — Water inside but the cabinet has also gone warm — If the temperature has slipped as well, read the cooling page — the water is a consequence of that fault.
The ranking that matters here
- A blocked defrost drain — Every frost-free refrigerator melts ice on a schedule and sends the water down a small drain to a pan above the compressor. Food debris and ice plug that drain, and the water then goes wherever gravity takes it. This ranks first on the BCD models because the evidence for it is visible inside the cabinet before anything is pulled out. Where the brand-generic page leads with the ice maker fill system overfilling or misaligned, this family leads with a blocked defrost drain, since that is the check the access here makes cheapest.
- The water supply line or its fittings — Supply leaks give clean water, often at the back and often growing rather than coming and going. That pattern separates them from defrost water immediately.
- The drain pan cracked, dislodged or overflowing — An overflowing pan is often a symptom rather than a cause: something is sending more water down than the defrost system normally produces.
- Door seal letting warm humid air in — It costs nothing to test with a sheet of paper and it removes a whole class of confusing evidence.
What to check first, and why
- First — look for water under the crispers and ice on the freezer floor — Take the bottom drawers out and look underneath, then look at the freezer floor. Water or ice at either point sits directly below the drain that should have taken it. The order separates clean water from defrost water and inside from outside before anything is dismantled, because those two distinctions decide the repair.
- Second — check the supply line and its fittings at the back — Supply leaks announce themselves on a dry tissue. They are clean, continuous and they get worse rather than better.
- Third — find the drain pan above the compressor and look at it — With the power off, find the pan above the compressor and check it is clipped in, intact and not brimming. A pan holding far more than usual points back at the defrost system.
- Fourth — test the door seal and look for sweating inside — Paper-test the gasket all the way round and look for condensation on the inner walls. Water plus frost is an air-leak story rather than a plumbing one.
Power off before panels come off
Safety
Power off, water off. Never use a heat gun or an open flame on a frozen drain or a plastic line, and never clear a drain with a metal probe: the tubing behind the panel punctures and a punctured sealed system is a far bigger repair than the leak. Have help before pulling a heavy cabinet out over a wet floor.
Where the owner job ends
Book a visit once you know which family of leak you have and cannot reach the source. Say whether the water is clean or has been sitting, whether it appears on a schedule or continuously, and what you have already cleared — that decides which parts come on the van.
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Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
