The answer, before the detail
Not every noise is a fault: on Black+Decker BBD models the sealed system gurgles and the cabinet ticks as it expands, and both are normal. What is worth chasing is a noise that rises with a fan, repeats once per turn, or arrives with the compressor. This page ranks them in the order that separates them fastest. What separates BBD units here is visible without a tool: a toe grille at the front instead of a clear back, or nothing of the sort on the other build.
What you observe on these models
- A low buzz at the bottom rear of the cabinet — Steady and low rather than rising and falling.
- A rising whine that starts a while after the door closes — The door-switch behaviour is what identifies it.
- Repeated clicking from the lower back — A start relay trying and resting, which is worth attention because it goes with a warm cabinet next.
- Noise that arrives on a schedule rather than continuously — The fill valve and the harvest are both noisy by design, and pausing the ice maker for a day proves it.
- NEAR MISS — a gurgle or a soft pop a few minutes after the door closes — If that is all you have, there is nothing here to fix.
Causes, ranked for the BBD build
- The evaporator fan is touching ice, or its bearing is going — This takes the top spot on fan-fed builds, because the same frost that makes a cabinet warm makes the fan sing first. Treated early it is a fan; treated late it is a fan and a defrost fault.
- The ice maker filling, harvesting or running dry — Ranked by pattern rather than by likelihood: it is common, but it is also self-proving, since pausing the ice maker settles the question in a day.
- The condenser fan is catching on debris or running out of balance — It sits in the middle of the list — common enough to check, cheap enough that finding it early is worth the minute it takes.
- The cabinet is out of level or touching something — It sits above the mechanical causes on built-in and trimmed installations, where the cabinet is boxed in on three sides and a panel only has to touch once to buzz all day.
The order that finds it fastest
- Open the freezer door while the noise is happening — A noise that stops instantly is on the fan behind the freezer wall; one that carries on is not.
- Put an ear to the back grille, then to the freezer door — Do this before moving anything, because moving the cabinet can silence a contact noise you then cannot find.
- Press on the sides and top while it runs — A noise that changes under a hand is contact or level, and neither needs a part.
- Take the ice maker out of the question — If the noise had a schedule, this proves it in one day without a tool.
Power off first
Safety
Unplug the appliance or switch off its breaker before removing any panel — a capacitor can hold a charge after the power is off. Leave the door switch and its wiring exactly as they are: it cuts the fan for a reason, and a unit that runs with the door open ices the evaporator faster than it cools the food.
Where the owner job ends
Call when the noise is a scrape or squeal from behind the freezer wall, when the compressor clicks and rests rather than running, or when a noise arrives together with a cabinet that is no longer cold. Those three go with a part failing rather than a part touching. A rattle you can change with a hand, and a gurgle after the door closes, are not service calls at all.
Other faults covered for the BBD models
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
