The short answer
On a True Refrigeration freezer, a freezer only has three sources of water: melt from a defrost, condensation from air that got in, and an ice maker if it has one. Where the water appears tells you which, and the cheapest causes are also the commonest. A cabinet in a working kitchen is opened many times an hour by people who are not thinking about the door, so load and sealing outrank component failure.
What you are actually seeing
- Water standing in the bottom of the cabinet — The drain path is blocked or the plug is in when it should be out.
- Heavy frost on the walls and the seal — Warm damp air is getting in, and that frost becomes the water you are mopping.
- A wet patch that appears once and then not again — A melt event with a cause, rather than a fault.
- NEAR MISS — the floor is wet only when the washer or sink runs — The water is not coming from the freezer. Check what shares the floor.
Causes, most likely first on this freezer
- Drain plug left out, or the drain path blocked — Ranked first on True Refrigeration: a cabinet in a kitchen produces far more defrost water than a domestic one, so any restriction in the drain shows as a puddle within days. On this one, remember that the door is opened constantly by people carrying things, so load discipline outranks parts.
- Drainage geometry lost when the cabinet was last moved — Second: it is the cheapest correction here and it is almost always what has changed when a cabinet that never leaked starts leaking.
- Ice maker or water connection on cabinets that have one — Third: if the cabinet has no water connection this cause does not exist, which is itself a useful narrowing.
- A one-off melt event rather than a fault — Bottom of the list, which is the useful part: the timing is the diagnosis: a puddle that appears once, with the contents still solid, is an event rather than a fault.
Check in this order, and why
- First — find the drain and check whether the plug is in place and the path is clear — A minute of looking settles the commonest cause on this page.
- Then — put a level on the top and check the cabinet sits with a slight backward tilt — A forward tilt reverses the whole drainage path.
- Third — switch the ice maker off for a day and see whether the water stops — The cleanest single test on this page.
- Only then — ask what happened in the last day — a door left open, a power interruption, a manual defrost — An explained puddle with solid contents needs no repair at all, which is why it comes after everything above it.
What an owner can safely check
- Check the drain plug and flush the drain path with warm water — Find the drain, make sure the plug is seated, then ease warm water through the path until it runs away freely.
Tools: warm water, clothAbout 20 min
- Switch the ice maker off for a day — If the leak stops, the fault is in the fill path rather than in the drainage.
About 5 min
- STOP before testing anything electrical with the power on — The checks above are all cold checks. Anything that needs power applied is where an owner check ends.
Before you open anything
Safety
Unplug the cabinet or switch off its breaker before mopping under or behind it, and before any panel comes off. Do not run a lead across a wet floor to keep the cabinet going. Never chip ice off with a knife or a screwdriver — the tubing under it is soft and a puncture scraps the cabinet. A loaded freezer is very heavy and a wet floor makes it unpredictable: empty it before moving it, and walk it rather than dragging it.
When it stops being an owner job
Call when the drain will not clear with warm water, when the tray is cracked or unreachable, or when water keeps arriving after a plumbed ice maker has been off for a day. Call immediately if water is reaching an electrical connection or the floor covering is lifting. Water together with softening contents means the cooling system, and that is the fault to deal with first.
Nearest pages of this class
What this page does not cover
This page is written for the True Refrigeration freezer as a class, not for one family or one model line. Where a family-specific page exists for your unit it is linked above and it is the more specific answer. Deliberately not here: part numbers, wiring colours, torque figures and any measured value, all of 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.
