What this usually is
The distinction that matters here is between a unit that is not making cold and one that is making cold and cannot deliver it. On this family it is usually the second. Airflow closes first, the compartment follows, and the compressor runs on because the thermostat never sees the temperature it is waiting for. The first two checks below cost nothing and need no tools. The last one is licensed work. The family key in the second column is what ties these listings together; the first column is what you will find on the plate.
What the owner observes
- The cabinet cooled normally until a defrost cycle, and not since — A defrost that ran and did not finish leaves the evaporator part-thawed and the drain part-blocked, and the unit never recovers on its own.
- The outside of the cabinet, near the hinges, is unusually warm — Some of these cabinets run condenser tubing through the shell. Warm there is normal; hot enough to be uncomfortable is not.
- The freezer holds and the fresh-food side does not — On a single-evaporator cabinet the fresh-food side is fed by air from the freezer, so it fails first when that air stops.
- The compressor never cycles off — It runs without ever reaching the set point, which is the same fault seen from the control side rather than the air side.
- NEAR MISS — the unit is silent and nothing is cold — Silence is a different page. A dead cabinet is a supply, start-relay or control fault, not the airflow fault this page covers.
Ranked causes for these models
- Airflow blocked by a frosted evaporator — First on this roster, and by some distance. Adaptive defrost on these cabinets stalls before it fails outright, so ice accumulates over weeks and the owner notices the warmth long before the frost.
- Defrost heater, thermostat or timer fault — This is what turns cyclical frost into permanent frost. It is also the point at which looking stops being enough and a meter is needed.
- Sealed-system or compressor fault — Last, and the reason the order matters. It is the least likely cause on this roster and the only one that is not owner-serviceable at any level.
The order to check in, and why
- Listen at the freezer with the door open and the switch held in — The evaporator fan should run. Hearing it separates the two likeliest causes before any panel comes off.
- Close the door on a strip of paper at three heights — Paper that pulls out freely anywhere along the seal means the door is not sealing there, and that is a cheap fix that looks like an expensive one.
- Empty the cabinet and run it with the doors shut overnight — Removes the load and the door openings as variables. What it does overnight tells you what kind of fault this is.
Isolate first
Safety
Isolate the machine first: unplug it, or switch off its breaker where there is no reachable plug. A capacitor can hold a charge after the power is off, so isolation is the start of every job here and not a formality.
Models in the CF family — This page covers the listings below and says so here, because it generalizes over all of them.
Reference| Model number | Family key |
|---|---|
| CF004-25 | atlas-homegoods:refrigerator:cf |
| CF028-12 | atlas-homegoods:refrigerator:cf |
| CF028-18 | atlas-homegoods:refrigerator:cf |
When to call a technician
Anything reachable without a tool is yours; anything that needs the rear panel off is a service call on this family, because the panel is foamed against the liner on some of these listings and comes off in one direction only. Refrigerant work is licensed regardless of who is holding the gauges.
Other pages for this family
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