The short answer
All the water here is condensate, and a display cooler makes a lot of it. A blocked drain, an overwhelmed tray or a cabinet that is not level explains nearly every case.
What you actually see and hear
- Water pooling at the base inside the cabinet — The internal drain is blocked.
- Water under or behind the cabinet — The evaporation tray is full, cracked or displaced.
- Water running down the inside of the glass — Condensation. Expected in a humid room with a busy door.
- A damp patch on the floor after a busy warm day — More condensate than the tray could evaporate.
- NEAR MISS - water on the outside of the glass — Room humidity on cold glass. Not a leak.
Causes, most likely first on this machine
- Blocked internal drain — First. It is narrow and it collects label paper, packaging fibre and spilled drink.
- Evaporation tray overwhelmed — Second. In a humid room with heavy door use, the cabinet can simply produce more than the tray evaporates.
- Door not sealing or being propped — Third. More air in means more water formed, continuously.
- Cabinet not level — Fourth. A forward lean sends the condensate to the floor instead of the channel.
- Heavy evaporator frost melting at once — Fifth. A defrost after a long frost build releases a lot of water at a time.
- A genuine fault in the condensate path — Last, and uncommon on a cabinet with no plumbing.
Check in this order, and why
- Work out whether the water is inside, behind or underneath — Each points at a different part of the path.
- Find and check the internal drain at the base of the rear wall — A blocked drain is the usual internal answer.
- Pull the cabinet out and check the evaporation tray — Expect it to be full in humid conditions.
- Check the door seals and the cabinet level — Both control how much water forms and where it ends up.
What an owner can safely check
- Empty the lower shelves and clear the internal drain with warm water — Use a soft tube, never a metal probe.
Tools: warm water, soft tubeAbout 25 min
- Pull the cabinet out, empty the evaporation tray and reseat it level — Check it for cracks while it is out.
Tools: towelAbout 20 min
- Check the door self-closes and seals all round — A door propped during restocking is a large hidden source.
Tools: paperAbout 20 min
- Level the cabinet with a slight backward tilt — It keeps condensate in the channel where it belongs.
Tools: spirit levelAbout 20 min
- Defrost the evaporator fully if frost has built up — Catch the melt with towels and a tray.
Tools: towels, shallow trayAbout 240 min
- STOP HERE if water appears from the compressor area itself — That is service territory.
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. A glass display door is heavy and its hinge carries the whole weight - do not let it swing or lean on it open. The lighting, the door heater on some cabinets and the compressor circuit are all live until the unit is unplugged, and a capacitor can hold a charge after the power is off.
When to call a technician
Call when the drain is clear, the tray is sound and level and water still collects - that means the condensate path has failed rather than blocked. Call promptly if water is reaching a timber floor or an electrical outlet, because in both cases the consequential damage outruns the appliance. Where the cabinet is simply producing more condensate than the tray can evaporate, the answer is routine emptying rather than a repair.
Nearest pages of this class
What this page does not cover
This page is written for the upright glass-door display cooler class, not for one family or model line. Where a brand- or model-specific page exists for your unit it is the more specific answer and it is linked above, so go there first if your machine is named. What is deliberately not here: compressor, fan and lighting part numbers, glass door specifications, control ranges and shelf dimensions, all of which differ by family and belong on the page for that family.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
