What is happening, in three sentences
On the BC group most noise complaints resolve to contact rather than to a failing part: a cabinet not sitting square, a drain pan loose on its bracket, or tubing resting against sheet metal. All three are checkable with the machine isolated and no panel off. A fan blade striking ice is the common exception and it announces itself by being intermittent.
What you actually observe
- Opening the door makes the noise stop — The door switch cuts the evaporator fan, so anything that stops with the door belongs to it.
- A rattle from low down at the back of the cabinet — It usually starts a second or two after the compressor does, which is the clue that it is being driven rather than generated.
- A scraping or ticking that speeds up and slows down — A blade catching something, and it changes as the blade changes speed.
- NEAR MISS — the noise arrived and the cabinet stopped getting cold — A fan that has stopped is both quieter and warmer; that combination belongs with the cooling article rather than this one.
Causes in likelihood order on this model group
- Drain pan loose, warped or resting off its bracket — The pan sits over the compressor where it is both hot and in the vibration path. First on this family because it needs nothing taken apart — on a cabinet this size it is a look and a listen, and excluding it costs less than five minutes.
- Cabinet not level, or feet not all carrying weight — A compact refrigerator on four feet only needs one of them to be short for the whole cabinet to rock on the compressor's own vibration. Second on this family: it produces the same complaint as the cause above it, so the two have to be separated before either is acted on.
- Condenser fan blade striking debris, or its bearing dry — The condenser fan lives at the bottom of the cabinet where paper, dust and pet hair collect. Third on this family, and the rank where the cause stops being obvious from the doorway.
The order of checks, and why it is this one
- Start with the sound, not the part — Name whether it is continuous, intermittent or periodic before you look at anything. On BC that single decision removes most of the list below.
- Look at the pan with the machine isolated — It should sit square and hold still when you press it. A pan that moves under a finger is the rattle.
- Lean on each corner in turn while it runs — If the sound changes, the cabinet is rocking and the feet are the fix. This takes seconds and settles the commonest cause.
- Isolate the machine and turn the condenser fan by hand — It should spin freely and stop smoothly. Grinding or a catch names the part.
Before you touch 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, and on a refrigerator the compressor circuit stays live for as long as the plug is in.
Models in the BC family
Reference| Model number | Family key |
|---|---|
| BC-160OD | avanti:refrigerator:bc |
| BC-46 | avanti:refrigerator:bc |
| BC-47 | avanti:refrigerator:bc |
| BC-50 | avanti:refrigerator:bc |
| BC-65 | avanti:refrigerator:bc |
| BC-70 | avanti:refrigerator:bc |
| BC-71 | avanti:refrigerator:bc |
| BC-90DAN | avanti:refrigerator:bc |
| BC-90OD-DC | avanti:refrigerator:bc |
When this stops being owner work
The honest limit is the rear panel. Behind it are components that need testing rather than looking at, and on a cabinet this size they sit close enough together that a probe in the wrong place breaks something that was working.
Nearest pages for this model group
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
