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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 BVI 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.
How the leak presents
- Damp or buckling flooring in front of the machine — Damage to the floor in front of the cabinet is a sign the leak is old and slow, which is the kind that costs the most.
- 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 — The most reported symptom and the least informative: the base tray channels water forward whatever its source.
- Water pooling under the crisper drawers — Pooling beneath the drawers is the classic blocked-drain finding, and it is visible without moving the machine an inch.
- NEAR MISS — Water inside but the cabinet has also gone warm — A cooling fault dumps melting ice into the cabinet. Fix the cooling problem and the water stops; that is a different page.
Causes, most likely first
- 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. This ranks first on the BVI models because the evidence for it is visible inside the cabinet before anything is pulled out. Where the brand-generic page leads with a blocked defrost drain, this family leads with the water supply line or its fittings, since that is the check the access here makes cheapest.
- A blocked defrost drain — It recurs if only the visible ice is cleared: the plug is usually further down the tube than it looks.
- The ice maker fill system overfilling or misaligned — Switching the ice maker off for a day is a definitive test and costs nothing.
- The drain pan cracked, dislodged or overflowing — The pan is meant to hold defrost water while the compressor heat evaporates it. Crack it, knock it out of position or ask it to hold more than a normal cycle and it spills.
What to check first, and why
- First — check the supply line and its fittings at the back — Shut the house valve, pull the machine out and run a dry tissue over every fitting and along the line. Damp at a fitting means pressure is escaping continuously.
- Second — look for water under the crispers and ice on the freezer floor — Both sit directly below where the defrost drain should have carried the water away, so either one confirms the drain without a tool being lifted.
- Third — switch the ice maker off for a day and watch — Turn the ice maker off and give it a day. Water that stops with it came from the fill system, and that removes a whole branch of the list.
- Fourth — find the drain pan above the compressor and look at it — Look at the pan and how fast it refills after emptying. Both facts say something about what is happening upstream.
Before you open anything
Safety
Unplug the refrigerator or switch off its breaker before any panel comes off, and shut the house water valve before touching a supply fitting. A capacitor can hold a charge after the power is off. Water on a kitchen floor beside a powered appliance is a shock risk in its own right — mop it up before you start work rather than after.
Where the owner job ends
The owner line is the panel and the fitting. Flushing a drain from inside the compartment, reseating a pan, levelling the cabinet and switching the ice maker off are yours; removing the freezer rear panel to reach a plugged drain or replacing a valve is not.
Nearest pages of this class
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
