The short answer
The ATMP roster covers a small group of closely related cabinets, and its entries differ only in the trailing finish position. The distinction that matters here is between a cabinet that is not cold and one that is not cold enough. The second is far more common on these models, it is progressive, and most of it is owner-diagnosable; the first points at the start components or the sealed circuit and is a different repair.
What you observe on these models
- It recovers after being emptied and drifts again once refilled — A cabinet short of capacity rather than broken, which points at airflow, seal or condenser rather than at the compressor.
- The cabinet is warm but clearly running — The compressor hum is there and the air inside is not cold.
- The freezer side is cold and the fresh-food side is not — Cold is made in one place and moved to the other.
- Frost building as a sheet on the rear interior wall — A layer rather than the usual light dusting.
Causes, most likely first on the ATMP line
- Frosted evaporator blocking the air path — It ranks first here because it explains the commonest version of this complaint, the one where the cabinet is cool rather than warm and the running never stops.
- Door seal not closing, or a door left ajar — Ranked second on this roster: seals fail gradually, which is why the cabinet seems to have been fine until it suddenly was not.
- Vents blocked by stored food or an overfilled shelf — Ranked third on this roster: cold air has to reach the compartment through specific openings, and a shelf packed to the back wall closes them as effectively as a failed fan would.
- Start components or the sealed system — It ranks last because every cause above it is more common and cheaper, and because arriving here first is how working cabinets get replaced.
- Body: Where this ranking departs from the brand-generic order is door seal not closing, 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
- Look at the rear interior wall for a frost sheet — A layer thick enough to hide the surface underneath explains the complaint on its own, and it means the defrost side is worth investigating.
- Close the door on a strip of paper at several points and pull — Anywhere the paper slides out freely is admitting air. Check the whole perimeter, not just the handle side.
- Clear the back of every shelf and find the vents — Leave a hand's width clear at the rear of each shelf, then give the cabinet a day before judging.
- Have the circuit assessed rather than guessed at — This needs gauges and a licence. Oil on the tubing at the back means the circuit is already open and it should stop running.
Before you open anything
Safety
Switch off at the breaker before any panel comes off and treat the space behind it as live until proved otherwise. Defrost with the doors open and the power off, never with a heat gun or an open flame, and never by chipping at the surface. Keep meltwater away from the supply cord.
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
Call when a full defrost, a cleared condenser and a clean paper test have all failed to hold the cabinet for a day, because that pattern eliminates everything an owner can reach. Call sooner if only one compartment is affected and the vents are already clear, because a damper or an interior fan needs a panel off. Either way, move the perishable load first: it will not survive the diagnosis.
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: Not Cooling or Not Freezing](/blog/arctic-king-arctic-king-refrigerator-fkatmp-refrigerator-cooling-failure-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.
