The short answer
On a frost-free cabinet of this age the defrost water is the only water in the machine, and the drain that carries it is the part that blocks. Ranked first on this platform: A blocked defrost drain. The checks below follow that ranking, and the first of them need no tools and no panel removed.
What you observe
- Water under the crisper drawers, and a wet patch at the front of the floor — Water inside before it is outside means it started in the cabinet, not at a fitting.
- A steady damp patch under the middle or back of the cabinet rather than at the front — Where the water appears on the floor tells you which end of the path it left at.
- Water at the front, and a door that swings open rather than closing itself — A door that will not self-close and a wet floor at the front are the same fault.
- NEAR MISS — water only appears after a power cut or a long door-open — That is melt from the evaporator finding its way out, and it usually needs no repair at all.
Causes, most likely first on this platform
- A blocked defrost drain — Every cabinet that defrosts itself has to send the meltwater somewhere, and it all goes through one small drain hole into a pan underneath. It ranks first on this platform because decades of defrost cycles have put every crumb and every food particle that reached the compartment floor into one small drain hole, and on this platform that hole is the single most common source of a leak.
- An overflowing or cracked evaporation pan — The pan under the cabinet is meant to hold defrost water until it evaporates in the air off the condenser. It ranks second here because a cabinet of this vintage has wear on everything at once, which changes the ranking: the parts that wear are far more likely than the parts that break.
- The cabinet tilted so water runs the wrong way — Drains and pans rely on the cabinet standing level, or tilted very slightly backwards. It sits third because the causes above it account for more of these cases, not because it is unlikely.
Check in this order, and why
- Take the drawers out and look for standing water in the floor of the compartment — It places the leak inside the cabinet in one look and costs nothing. It leads because it tests the top-ranked cause.
- Pull the cabinet out and look at the pan underneath with a torch — A cracked or overfull pan is obvious once you can see it. Tests the second-ranked cause.
- Put a spirit level on the top of the cabinet, front to back — Two minutes, and it explains a leak that no part would have fixed. Tests the third-ranked cause.
What an owner can safely check
- Clear the drain hole from inside with warm water and a soft flexible line — Warm water first; anything stiff enough to punch through ice is stiff enough to puncture the tray.
Tools: warm water, turkey basterAbout 30 min
- Unplug the cabinet, slide the pan out, empty it and check it for cracks — Support it as it comes out — a full pan carries more water than it looks like it does.
Tools: torch, clothAbout 25 min
- STOP here if the next step needs a meter on live terminals or a sealed panel off — That is where an owner check ends. Write down what each check showed and hand it to the technician.
Before you start tracing it
Safety
Unplug the appliance or switch off its breaker before removing any panel or reaching into the base — a capacitor can hold a charge after the power is off, and water plus a live compartment is the one combination to take seriously.
When to call a technician
Call once the water is coming from behind a sealed panel, from the sealed system, or from a drain that will not clear from the cabinet side.
Nearest pages of this class
What this page does not cover
This page is written for the Moffat refrigerator as a class, not for one family or one model line. Where a family- or model-specific page exists for your unit, that page is the more specific answer and the one to read first. Deliberately not here: part numbers, wiring colours and disassembly order, which differ by family.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
