The finding, first
Running but not cooling is a delivery fault far more often than a production fault, and the models on this roster are no exception. The evaporator frosts over, the air path closes, and the cabinet warms while the machine works harder than ever. The first two checks below cost nothing and need no tools. The last one is licensed work.
How it presents
- A sheet of frost across the back wall of the freezer — Not the usual light dusting that comes and goes, but a solid layer that does not clear between cycles.
- 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.
- The cabinet is warm but the unit is plainly running — The compressor hum is there and steady; the air inside is not cold. That combination is the whole page in one observation.
- 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.
What it turns out to be, in order
- 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.
- Condenser coil choked with dust or pet hair — Frequent, invisible and free to fix. Heat that cannot leave the coil is heat that stays in the cabinet, and on a bottom-mounted coil nobody ever looks at it until something goes wrong.
- Defrost heater, thermostat or timer fault — This is what makes the frost in the first cause permanent rather than cyclical. It is the point where owner diagnosis usually stops and a meter is needed.
- Sealed-system or compressor fault — Bottom of the list, which is the whole reason for working in this order. It is the rarest finding here and the only one with no owner-level version.
Work in this sequence
- 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.
- Feel the condenser tubing and the compressor shell — Only worth doing once the steps above are clean, and only as an indication of whether the sealed system is working at all.
Safety before diagnosis
Safety
Pull the plug, or trip the breaker if the machine is hard-wired, before a single screw comes out — and remember that a capacitor stays charged after the supply is gone. Behind the freezer rear panel there is a heater element wired to the same circuit as everything else, which is why the isolation above is not a formality.
Models in the F family — The roster below fixes the subject of this page.
Reference| Model number | Family key |
|---|---|
| F58145 | auseo:refrigerator:f |
| F5887-GREY | auseo:refrigerator:f |
| F5890GN-GREEN | auseo:refrigerator:f |
| F5890R-RED | auseo:refrigerator:f |
When this stops being owner work
Stop and call when the frost comes back after a full manual thaw. That pattern says the defrost side is not working rather than that it was overwhelmed once, and diagnosing it means putting a meter on a heater and a thermostat inside a cold cabinet.
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.
