The short answer
Water at an apartment-size refrigerator usually comes down to one thing: the defrost drain is blocked. Next on the list: the condensate pan is cracked, overfull or out of position. Where the water appears — under a drawer, behind the cabinet, or down the door — decides this faster than any tool.
What you observe
- Water where there was none before — Under a drawer, behind the cabinet, or down the door — each points elsewhere.
- Water pools under the crisper drawers first — The channel backs up before it overflows to the floor.
- Water appears at the back rather than inside — A pan fault puts water outside the cabinet, not under a drawer.
- The leak started after the cabinet was moved or cleaned behind — Nothing failed; the geometry the drain relies on changed.
- NEAR MISS — the cabinet is also failing to hold temperature — Read the cooling page first — that is one fault with two symptoms.
Causes, most likely first on this unit
- The defrost drain is blocked — First on any auto-defrost cabinet, and by a wide margin. Melt water from each defrost is supposed to run down a small channel to a pan over the compressor.
- The condensate pan is cracked, overfull or out of position — Ranked here because it is downstream of every other water path and so it catches the blame for all of them.
- The cabinet is tilted the wrong way for its drain — Ranked here because levelling is free and it explains a leak that started right after the cabinet was moved.
- Condensation rather than a leak — Last, and distinguished by where the water is: spread thinly and everywhere is condensation, concentrated at one point is a leak.
Check in this order, and why
- Find the drain hole at the base of the rear wall and clear it — A blocked channel is the commonest leak in refrigeration.
- Isolate the cabinet and check the pan sits square and whole — Everything that drains lands here, so it is always worth a look.
- Put a level on the cabinet top, front to back and side to side — The drain relies on a small fall; tilt the wrong way and it fails.
- Note whether the water is spread thinly or running from one point — Condensation is general; a leak has a source you can find.
What an owner can safely check
- Dry everything and find out where the water reappears first — The first wet point is the source; mopping blind loses the diagnosis.
Tools: towelsAbout 15 min
- Flush the drain hole at the base of the freezer rear wall — Warm water and a soft turkey baster. Never wire.
Tools: warm water, basterAbout 30 min
- Isolate the cabinet, slide the pan out and check it for cracks — Seat it square on its rails when you put it back.
Tools: torchAbout 20 min
- Level the cabinet with the front very slightly high — Recheck after a day of normal use.
Tools: spirit levelAbout 20 min
- STOP HERE before disturbing any water fitting or removing a rear panel — Water under pressure and live terminals in the same space is a service job.
Before you open anything
Safety
Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. Leave the freezer door switch wired as you found it: it cuts the evaporator fan for a reason, and defeating it puts a spinning blade behind an open door.
When to call a technician
Call once you have cleared the drain, confirmed the cabinet is level and dried the area, and water still returns. Call without waiting if water behind the cabinet refills after mopping: pressurised water does not stop on its own. Call immediately if water is reaching an outlet, a plug or any electrical connection — switch the circuit off first.
Nearest pages of this class
What this page does not cover
This page is written for the brand and the cabinet class, not for one family or model line. Where a family- or model-specific page exists for your unit, it is the more specific answer and you should start there. Deliberately absent: fan and defrost identifiers, wiring colours and capacity figures, which differ between the top-freezer and all-refrigerator families.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
