What this usually turns out to be
Most refrigerator leaks are a clogged defrost drain, and most of the rest are a supply fitting. The order below establishes which family you are in before anything is moved. The RFD models share a drain route from the evaporator to the pan above the compressor, which is why the drain checks lead the order here rather than the supply checks.
How the leak presents
- Ice building on the freezer floor or under the drawer — Defrost water refreezing where it stalls. It is the same fault as the puddle, caught one stage earlier.
- Water running down the inside back wall — A wet rear wall is usually the machine’s own water taking the wrong route, not a plumbing failure.
- A wet patch only after the ice maker fills — Wet patches that follow an ice-maker fill rather than a defrost schedule point at the supply side, and switching the ice maker off for a day proves it.
- NEAR MISS — No water, just ice fused in the bin — Ice fused in the bin without any water on the floor is an ice-production symptom rather than a leak.
What is behind it, ranked
- 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. It is first because it is the most common source of water on the RFD models by a wide margin. That is the departure from the brand-wide order: the drain pan cracked, dislodged or overflowing goes ahead of the ice maker fill system overfilling or misaligned on the RFD models because it is visible without moving the machine.
- 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.
- The water supply line or its fittings — A line pinched when the machine was last pushed back is one of the most common versions of this fault.
- The ice maker fill system overfilling or misaligned — A fill valve that does not close cleanly, or a fill tube pointing slightly off the mould, puts water where ice was meant to be and it runs out of the compartment. It sits here because the test for it is free and decisive, which makes it worth doing even when it looks unlikely.
What to check first, and why
- First — 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. The order separates clean water from defrost water and inside from outside before anything is dismantled, because those two distinctions decide the repair.
- Second — 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.
- Third — 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.
- Fourth — switch the ice maker off for a day and watch — If the water stops with it, the fill system is the source. One switch and a day of patience removes an entire branch of the list.
Before you open anything
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.
When this stops being a homeowner job
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.
Other faults on this appliance
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
