The answer first
The Artt ATUF refrigerator family covers eight listings in the roster below, and on that platform the first split is whether both compartments are warm or only one. Of the things that stop a refrigerator cooling, the two most common cost a part that fits in a pocket and the least common costs more than many machines are worth. Where the freezer still works and the fresh-food side does not, the sealed system is almost certainly fine and the problem is on the path the air takes between them.
What an owner actually sees
- Both compartments are warm and the machine is running continuously — Either the air path is blocked at the source or the system is no longer moving heat.
- The condenser coil or the grille at the bottom is packed with dust — Heat has to leave the machine somewhere. A blanketed coil raises head pressure, runs the compressor hot and shows up first as a cabinet that has quietly lost a few degrees.
- The cabinet recovers overnight and warms again during the day — Door openings are the load. A machine that only just copes will hold temperature when the kitchen is quiet and lose ground when it is not, which points at capacity rather than a failed part.
- NEAR MISS — the machine is silent and nothing is cold at all — No compressor sound, no fan, no light behaviour: that is a power, relay or control fault rather than the cooling path, and it is a different page from this one.
Causes, most likely first on the ATUF line
- Airflow blocked by frost on the evaporator — Ranked first on the ATUF line, because the coil ices in normal use and depends on a cycle running properly to clear it, so a cycle that is merely late rather than absent will close the air path over weeks without any warning. The same label also carries freezer listings, so the cabinet and its controls were designed to do more than one job and a fault can sit on the half you are not looking at.
- Cabinet packed so the rear air outlets are blocked — Second on the ATUF line, because it is an arrangement problem rather than a fault, it costs nothing to put right, and it produces a warm compartment on a machine where every part is working exactly as designed.
- Defrost heater, sensor or control no longer completing the cycle — Third on the ATUF line, because it is invisible until the ice it should have cleared becomes the fault you can see, and separating the three parts needs the rear cover off and a meter on them.
- Sealed-system or compressor fault — Last on the ATUF line, because nothing in it wears in normal use, and nothing in it can be worked on without gauges and a licence, which is why it ends the owner diagnosis.
What to check first, second, third
- Compare the two compartments before anything else — A hard-frozen freezer with a warm fresh-food side is an air-path fault. Both warm is a source fault.
- Pull the machine out and look at the condenser — Dust on the coil and a condenser fan that is not turning are both visible from the back or through the lower grille, and both are owner-serviceable with the machine unplugged.
- Feel the condenser tubing for heat with the compressor running — Warm tubing means the compressor is pumping and the system has charge; tubing at room temperature while the compressor hums is the one reading that points at the sealed system.
Safety first
Safety
Move the food first, then unplug the appliance or switch off its breaker before any panel comes off: a capacitor can hold a charge after the power is off. A refrigerator is top-heavy with its doors open and it rolls unpredictably on a hard floor, so empty the doors and walk it out with a second pair of hands. Hands stay out of the machine compartment while it is plugged in, because the lower fan starts whenever the compressor calls and there is no interlock on it..
Models in the ATUF family — This article generalizes over every listing above; a page written for a single model would go further than this one does. Numbers reproduced from the platform data for this label.
Reference| Model number | Family key |
|---|---|
| ATUF17D | artt:refrigerator:atuf |
| ATUF17DOE | artt:refrigerator:atuf |
| ATUF17ES-LK | artt:refrigerator:atuf |
| ATUF21D | artt:refrigerator:atuf |
| ATUF21DOE | artt:refrigerator:atuf |
| ATUF21ES | artt:refrigerator:atuf |
| ATUF21ES SS | artt:refrigerator:atuf |
| ATUF21ES-LK | artt:refrigerator:atuf |
Where the owner side ends
Call when frost returns within a week of being cleared, since a coil that re-ices that fast has a defrost fault behind it and clearing the ice a second time only buys the same week again. A cabinet that is a few degrees warm can wait a day if the food is moved; one that is at room temperature cannot, and neither can a freezer full of food.
Other Artt pages nearby
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
