The short answer
When the BSBS family stops cooling while the compressor still runs, the fault is usually that cold air is not moving rather than that cold is not being made. This page ranks the causes for that build; the brand-generic article ranks them for the brand as a whole.
What you observe
- The unit never cycles off — A machine that cannot reach its target runs continuously and works its compressor far harder than normal.
- Cabinet warm while the unit is clearly running — Cold is being made somewhere and is not arriving, which is an airflow question.
- Cooling recovers for a day after the doors are left open — Near-diagnostic for a defrost fault: melting the ice restores the air path temporarily.
- The compartment is colder at the bottom than the top — An air-distribution problem rather than a failure to make cold.
- NEAR MISS - silent and not cold — That is a no-power or start-relay fault and belongs on a different page.
Causes, most likely first on BSBS
- Evaporator or circulation fan not running — Ranked first on the BSBS family: the fan sits behind the rear panel on this platform and is the moving part that wears first. Every model code in the table above shares the same air path, which is why this ranks above the sealed system rather than below it. This moves above blocked airflow from a frosted evaporator, which leads the brand-generic order, because this family is a single build with fixed access points.
- Blocked airflow from a frosted evaporator — Second: ice on the evaporator is not a side effect but the blockage itself: once the fins are bridged, the cabinet is sealed off from the only cold surface it has.
- Door seals, door alignment and loading — Third: the free check, and a genuine finding on any cabinet that has started running without stopping: a seal that no longer meets loads the machine continuously.
- Condenser coil choked or its fan stalled — Fourth: the condenser is tucked into the machine compartment on this family and blocks with dust and pet hair quickly.
- Sealed-system or compressor fault — Last: last, and the one that decides the fate of the appliance rather than the repair; refrigerant work is licensed work and the diagnosis is not an owner diagnosis.
Check in this order, and why
- Listen at the cabinet for the circulation fan — It separates the two likeliest causes before any panel comes off.
- Check nothing is packed against the rear vents — Blocked vents give exactly the same symptom as a failed fan and cost nothing to rule out.
- Compare the two compartments against each other — One cold and one warm is an air path; both warm is the system or the condenser.
- Test each door seal with a sheet of paper — Last, because it explains a struggling cabinet rather than a warm one.
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. A loaded cabinet is heavy and top-heavy once the doors are open, so empty it before moving it, and leave the sealed system alone entirely.
When to call a technician
Call once the fan runs, the coil is clean and the seals are good but the cabinet is still warm: what is left is the defrost circuit or the sealed system, and neither is owner work on this family.
Other BSBS pages
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
