The short answer
Water from a Commercial Cool refrigerator comes from one of three places: melted frost that should have drained away, condensation that should never have formed, or a supply connection on plumbed models. Each leaves the water in a different place, so the first job is to find the puddle rather than to guess the part. Only one model number carries the KS designation, and it is in the table below. The letters are the family; the rating plate inside the cabinet carries the full number a parts counter needs.
What you actually observe
- Water appears every few hours rather than continuously — Cyclic water is defrost water, which points at the drain and away from any supply connection.
- Wet cardboard or packaging on the lowest shelf — Often the first sign, seen before any free water is visible.
- A trickle down the inside of the back wall — Melt water taking the wrong route because the drain below it is not accepting it.
- Floor wet at one front corner only — Tells you which way the cabinet leans, and levelling is part of the fix.
- NEAR MISS — water only after a power cut — Thawed frost rather than a fault. Dry it, and watch whether it comes back.
Where the water usually comes from
- Water that should have drained — Ranked first because automatic defrost produces water on every cycle and depends entirely on a small drain hole staying clear. Block it and the fault is guaranteed rather than likely.
- Water that should have evaporated — Second: the tray. It is designed to be overflowed slightly in humid weather and to dry between cycles, so a cracked or displaced tray makes a puddle that follows the compressor cycle.
- Water that should never have formed — Third: condensation from a seal, a door left ajar, or a cabinet in a humid room. The water is real and the cause is air, not plumbing.
- Water from the supply — Last, and only on plumbed models — but the most damaging, because a slow weep at a connection runs continuously rather than cyclically.
Check in this order, and why that order
- Time the leak against the defrost cycle — Water that appears every several hours rather than continuously is defrost water, and that points at the drain rather than the supply.
- Dry everything and lay paper down — A sheet of kitchen paper under the cabinet and another inside tells you where the water arrives first, which no amount of description can.
- Paper-test the door seal — A gasket that no longer grips at one point lets in the humid air that becomes the water you are mopping.
- Clear the drain gently — Warm water flushed down the drain hole, not a wire pushed hard. The tube below it is soft plastic and it is easy to puncture.
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. Water on the floor and electrical parts at the back of the cabinet are a bad combination, so unplug the unit before mopping underneath or pulling it out. Do not clear a frozen drain with a metal wire or a heat gun: the drain tube is soft plastic and a punctured tube leaks permanently and invisibly.
Models this page covers
Reference| Model number | Family key |
|---|---|
| KS-35F | commercial-cool:refrigerator:ks |
Where the owner line is on these models
Stop and call where the leak is continuous rather than cyclic on a plumbed model, where the cabinet has water at the back around electrical parts, or where clearing the drain has not held. Everything before that — finding the puddle, emptying the compartment, flushing the drain with warm water, levelling the unit, checking the tray and the gasket — is honest owner work and is exactly what a technician would do first. Because the KS line is a single model number, a technician can look the parts up before arriving, which is worth mentioning when you call.
Other KS problems we cover
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
