The short answer
When the A family leaks, the drain channel behind the rear panel is the first suspect and the supply line is the second. Both are checkable without tools, which is not true of the causes the brand-generic article opens with.
What you observe
- Water pooling under the crisper drawers — The classic blocked defrost drain: melt water has nowhere to go and backs into the cabinet.
- A sheet of ice on the floor of the compartment — Same fault caught later, once the pooled water has frozen.
- A crackle of ice under the drawers before any water appears — The early stage of a blocked drain, caught before the water reaches the floor.
- Water appearing a day or two after the unit was moved — A displaced drain pan or a strained supply connection rather than a drain fault.
- NEAR MISS - condensation on the outside of the doors — That is humidity and seal performance, not a leak.
Causes, most likely first on A
- Door seals and condensation — Ranked first on the A family: a glass door on this class of unit condenses readily once the seal has taken a set. Every model code in the table above shares the same air path, which is why this ranks above the sealed system rather than below it. This moves above blocked defrost drain, which leads the brand-generic order, because these models share one layout, so its weak point shows across the whole family.
- Water supply connection or line — Second: a small unit is moved more often than a built-in, and the line is strained every time.
- Blocked defrost drain — Third: a compact cabinet has a very short drain that a single piece of debris can close completely.
- Ice maker fill valve or its tubing — Fourth: last, and many units in this class have no module at all.
- Drain pan cracked or displaced — Last: the pan is small and shallow, so a unit that is not level overflows it.
Check in this order, and why
- Empty the compartment and find the drain opening — It is the likeliest cause and it is visible once the shelves are out.
- Check the cabinet is level and tilted very slightly back — A cabinet leaning forward sends melt water towards the door instead of the drain.
- Flush the drain channel with warm water — It confirms the diagnosis and clears most blockages in one step.
- Test the seals with a sheet of paper around each door — Last, because it explains condensation rather than standing water.
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. Refrigerant work is licensed work, so leave the whole sealed system to a licensed technician, and call at once if you see oil at the compressor or smell burning.
When to call a technician
Call when the drain keeps blocking after being cleared, because that usually means the drain heater or the defrost circuit is at fault rather than the channel itself.
Other A pages
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
