The short answer
A BUC cabinet that runs but never gets cold is usually failing at the door or at the condenser, not at the compressor. The brand-generic article puts a stalled defrost first; on this family the cabinet is small enough that a seal which no longer grips, or a grille packed with dust, starves it faster than frost ever does.
What you observe
- The cabinet is warm while the unit is clearly running — You can hear or feel the compressor working, but the air inside never gets cold.
- It only fails in warm weather or in a warm room — A compact cabinet has very little reserve. A platform that copes in a cool kitchen and gives up in a hot one is telling you the condenser cannot shed heat.
- The unit never stops running — A cabinet that cannot reach its setting runs without a break.
- Sweating or condensation around the door opening — Warm room air is reaching the cold surface, which means the seal is not closing along its whole length.
Causes, most likely first
- A condenser coil or grille blanketed in dust — Ranked first on this family. The condenser is small, it is close to the floor or the wall, and the clearance around it is measured in fingers.
- A door seal that no longer grips along its whole length — Second, and the cause owners most often miss. A compact cabinet loses its whole reserve to a small leak, and the seal on a light door takes a set if the unit has been transported or stored shut.
- A failed evaporator or condenser fan — On models that use a fan rather than free convection, a fan that has stopped gives exactly the warm cabinet of a blocked coil, with no dust to show for it. Listen for it before opening anything.
- Too little clearance, or a warm location — Placement is a genuine cause on this platform, not an excuse. Pushed tight to a wall, boxed into a cabinet run, or standing in a warm utility space, these units have nowhere to put the heat they remove.
Check in this order
- Put a separate thermometer in the cabinet and read it after some hours — It separates a cabinet that is genuinely warm from one whose control display is wrong, and it costs nothing.
- Feel the back of the cabinet for heat while it runs — A unit that is working but cannot shed heat feels hot at the back; one that is not pumping at all does not.
- Check where the control is set and whether it has been knocked — A knocked dial is the one cause that looks exactly like a failed platform and costs nothing at all.
Before you open anything
Safety
Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. These cabinets are light enough to move alone and heavy enough to tip - empty it first, and pull it out rather than walking it on its corners.
Models in the BUC family — The models this page covers, as the product spine lists them. The family spans a long model list, and the ranking below is what holds across all of it.
Reference| Model number | Family key |
|---|---|
| BUC1100XB | black-decker:refrigerator:buc |
| BUC1100XS | black-decker:refrigerator:buc |
| BUC1100XW | black-decker:refrigerator:buc |
| BUC1400XB | black-decker:refrigerator:buc |
| BUC1400XS | black-decker:refrigerator:buc |
| BUC1400XW | black-decker:refrigerator:buc |
| BUC1700XB | black-decker:refrigerator:buc |
| BUC1700XS | black-decker:refrigerator:buc |
| BUC1700XW | black-decker:refrigerator:buc |
| BUC2100JB | black-decker:refrigerator:buc |
| BUC2100JS | black-decker:refrigerator:buc |
| BUC2100JW | black-decker:refrigerator:buc |
| BUC2120M* | black-decker:refrigerator:buc |
When to call
Call once the door, the clearance and the condenser are all clean and the cabinet still will not hold temperature. That is the point at which the remaining causes are inside the machine.
Other faults on 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.
