The finding, first
When one of these units runs continuously and still will not hold temperature, the fault is nearly always upstream of the compressor. Ice sheets across the evaporator, the fan can no longer push air through it, and the compartment climbs even though the compressor never stops. Two of the three likely causes are checkable by the owner in a few minutes; the third is not an owner job at all. Where this page says "on this family" it means every listing in the table above, not a subset of them.
What the owner observes
- 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 is only slightly warm — A partial airflow loss, usually the beginning of the ice build rather than the end of it.
- 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.
- Food in the door is spoiling before food at the back — The door is furthest from the air supply, so a partial airflow loss shows up there first.
- NEAR MISS — the cabinet is cold but the icemaker is empty — Cold air with no ice is its own fault path and has its own page for this family.
The ranking for this platform
- 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 — Common and entirely preventable. A coil that cannot shed heat makes the compressor run continuously and still lose ground, and on cabinets with a bottom-mounted coil it packs solid without ever being seen.
- Door seal not closing, or a door left ajar by a shelf — Cheap to confirm and easy to dismiss. Warm air arriving faster than the unit can remove it produces continuous running and a cabinet that never gets there.
- 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.
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.
- Look at the freezer rear panel for a frost sheet — If the fan runs and the panel is iced, the airflow cause is confirmed and the defrost side is where the fault lives.
- Check that the vents between the compartments are not blocked by food — A packed freezer will starve the fresh-food side on its own, and it costs nothing to rule out.
Isolate first
Safety
Nothing below happens with the machine live. Unplug it or switch off its breaker, and treat any capacitor as charged until it has been discharged properly.
Models in the B family — A family page. These rows are what it generalizes over.
Reference| Model number | Family key |
|---|---|
| B38A | atlas-homegoods:refrigerator:b |
| B48A | atlas-homegoods:refrigerator:b |
| B58A | atlas-homegoods:refrigerator:b |
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
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
