The short answer
On a Brigade undercounter freezer the usual leak is a blocked defrost drain or a tray that is full because the condenser is too dirty to evaporate anything. Clean both. A damaged door gasket makes far more frost and therefore far more water. Deal with the wet floor immediately, whatever the cause turns out to be.
What you observe
- A puddle in front of the unit after each defrost — Melt arriving on the floor instead of in the tray.
- Standing water or ice in the cabinet base — The internal drain is blocked.
- Water at the grille rather than under the door — An overfull or displaced evaporation tray.
- Heavy frost inside and a wet floor together — A gasket problem producing more water than the drain can take.
- NEAR MISS - condensation on the outside in a humid kitchen — A surface effect, not a leak.
Causes, most likely first on this brand
- A blocked defrost drain — First. Food debris, grease and mould close the opening, the channel fills and freezes, and the melt from each defrost then runs out of the cabinet instead of down the drain.
- An overfull evaporation tray — Second, and usually a symptom of a dirty condenser. The tray depends on condenser heat to evaporate the melt, so a matted condenser leaves it filling faster than it empties.
- A door gasket damaged or not sealing — Third. A torn seal on a working line admits humid kitchen air all day, which becomes frost, which becomes far more melt than the drain was sized for.
- A unit not level after being moved — Fourth. These are rolled out for cleaning and pushed back, and a unit left leaning the wrong way keeps water in the cabinet or spills the tray.
- A cracked drain channel or split tube — Last. Uncommon, and the only cause here that is not kitchen maintenance.
Check in this order, and why
- Deal with the wet floor before diagnosing — A puddle in a busy kitchen is the urgent part.
- Look for ice or standing water in the cabinet base — That proves a blocked drain rather than suggesting it.
- Remove the front grille and check the tray — Full or displaced explains water at the grille.
- Test the door gasket on a slip of paper — More humid air in means more melt to get rid of.
What an owner can safely check
- Mop and mark the area immediately — Water plus a working kitchen is a slip risk before it is a repair.
Tools: mop, wet floor signAbout 10 min
- Defrost the cabinet fully — A frozen drain cannot be cleared while it is ice, so this comes first.
Tools: towelsAbout 240 min
- Flush the drain with warm water — Clear the passage gently with a soft flexible probe, never a sharp tool.
Tools: warm water, soft probeAbout 25 min
- Clean the condenser and reseat the tray — A clean condenser is what evaporates the melt, so it belongs in this job.
Tools: vacuum, degreaserAbout 40 min
- STOP HERE if a clear drain and good gasket still leak — That points at the channel or the tube.
Before you open anything
Safety
Mark and mop a wet kitchen floor before anything else - it is the immediate hazard. Switch the unit off at its breaker before clearing the drain or cleaning the condenser, because the fan can start at any time while it has power. Condenser fins are sharp - wear gloves. Never clear a drain with a knife, a skewer or stiff wire, and move stock to another unit before defrosting rather than refreezing anything that has thawed.
When to call a technician
Call when the drain runs clear after a full defrost, the condenser is clean, the tray is seated, the gasket drags on paper and water still reaches the floor. That points at a cracked channel or a split tube. Call sooner if the unit is also failing to hold temperature, or if the water is reaching an electrical supply or a socket at floor level.
Nearest pages of this class
What this page does not cover
This page covers the Brigade undercounter catering freezers, which drain defrost melt to a tray evaporated by condenser heat. Units plumbed to a floor drain, and walk-in rooms with their own drainage, are a different page. Not included by design: drain and tray part identifiers, tube dimensions and cabinet specifications.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
