The short answer
The ATMP roster covers a small group of closely related cabinets, and its entries differ only in the trailing finish position. Water at a refrigerator in this roster comes from one of two places: meltwater that never reached its drain, or supply water that escaped a fitting. Telling them apart is the whole diagnosis, and the volume usually does it for you.
What you observe on these models
- A wet patch at the back or under the cabinet — The drip pan, the drain outlet, or a supply fitting.
- Ice forming in a sheet on the compartment floor — A drain that has iced over completely.
- Condensation or ice along the door seal — Warm humid room air arriving where the seal is not closing.
- Water arriving faster than the cabinet could make it — A supply fitting rather than meltwater.
Causes, most likely first on the ATMP line
- Defrost drain blocked or iced — Ranked first on this roster: the drain is the narrowest part of the water route and it sits in the coldest part of the cabinet, so once an ice plug or a debris plug forms there every later defrost backs up into the compartment.
- Door seal admitting humid air — It ranks second here because frost along the seal line is visible evidence that points straight at the cause and the paper test confirms it in a minute.
- Supply line, filter housing or inlet fitting leaking — Ranked third on this roster: filter housings are the usual offenders, particularly after a filter change that was not fully seated.
- A split drain line or damaged liner inside the insulation — Ranked last on this roster: a drain line that has split where it passes through the insulation is the least likely outcome here and the only one that cannot be reached without dismantling.
- Body: Where this ranking departs from the brand-generic order is door seal admitting humid air, which moves up on the ATMP line because the roster is a small group of cabinets built the same way, so the order follows their shared construction rather than an average across the brand.
Check in this order, and why
- Find the drain opening in the compartment floor and test it — Pour a small amount of warm water into it. If it backs up rather than draining away, the route is blocked.
- Run the paper test around the whole door perimeter — Anywhere the paper slides out freely is admitting air, and that is where the condensation is forming.
- Close the shut-off and look at every fitting — Check the filter housing, the inlet and the visible run of the line. A fitting wet on top of the cabinet floor is not meltwater.
- Have the drain route traced properly — This needs the cabinet dismantled and is a service call. Arriving here means everything cheaper has already been eliminated.
Before you open anything
Safety
Switch off at the breaker before any panel comes off and treat what is behind it as live until proved otherwise. Deal with the floor before the cabinet: a wet floor beside a plugged-in appliance is a shock risk and a slip risk together. Close the water shut-off before disturbing a fitting, because a line under pressure behind a heavy cabinet is hard to stop once it starts, and get help before moving a full cabinet.
Models in the ATMP family
Reference| Model number | Family key |
|---|---|
| ATMP031AEB | arctic-king:refrigerator:atmp |
| ATMP031AES | arctic-king:refrigerator:atmp |
| ATMP031AET | arctic-king:refrigerator:atmp |
| ATMP031AEW | arctic-king:refrigerator:atmp |
| ATMP032AEB | arctic-king:refrigerator:atmp |
| ATMP032AES | arctic-king:refrigerator:atmp |
When to call a technician
Owner territory here is wide. The drain, the seal, the level, the pan, the visible supply run and the ice maker are all reachable with no tool and no panel. It ends where the drain route disappears into the insulation, and at any fitting you are not confident re-making.
What this page generalizes over
This page covers the whole ATMP roster in the table above rather than one cabinet on it. Where the slice carries a narrower roster drawn from the same capacity core, it is linked below and goes further than this page can.
Links: - [Arctic King FKATMP Refrigerator: Water Leak](/blog/arctic-king-arctic-king-refrigerator-fkatmp-refrigerator-water-leak-2)
Nearest pages of this class
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
