What this usually is on these models
Noise on the TWW line separates cleanly into sounds that follow the fan, sounds that follow the compressor and sounds that follow the cabinet. A buzz that only appears at one point in the cycle is a panel matching a frequency, not a motor, and that split does most of the diagnosis. The order below puts loose fasteners, a cover or a grille first and a worn fan bearing last, and that order is the point of the page.
What you observe
- Runs longer than it used to and is louder for it — The sound may be unchanged and simply present for more of the day.
- A hard knock at the start of each run — One thump as the compressor picks up, then a steady hum; often another at the stop.
- A rattle that comes and goes within a run — It appears for a few seconds at a particular point and then clears on its own.
- NEAR MISS - no noise at all and nothing is cold — A silent unit is a supply or a start fault, not a noise fault, and it belongs on the cooling page rather than here.
Ranked causes for these models
- Loose fasteners, a cover or a grille — Ranked first on this line: a screw that has backed out, a loose rear cover or a grille that has lost a clip buzzes only while the compressor runs, which makes it sound like a motor fault. It is not.
- Contents and baskets vibrating — It deserves a place in the ranking rather than a footnote: it is the single commonest explanation for a new noise in a unit that has not changed otherwise.
- The cabinet not standing squarely — Then: the unit is light enough to be moved by its own machinery. Standing on three of its four feet, or on a surface that flexes, turns an ordinary start into a bang that carries through the room.
- A worn fan bearing — Last, and the reason the order matters: a bearing that has dried out whines or rumbles continuously while the fan runs, and unlike a fouled blade it does not change when the obstruction is cleared, because there is none. It is the first of the genuinely mechanical causes.
What to check first, second, third
- Rest a hand on each panel while it runs — Check the fasteners around the machinery bay cover for one that has backed out.
- Run the unit empty for a minute — Take everything out, close the door and listen. If the noise has gone, it was load, not machinery, and the fix is how the cabinet is packed.
- Press each corner in turn — Slide the unit a hand-width and listen again. A noise that changes with position is the stance or the surface, never the compressor.
Read this before you start
Safety
Isolate the unit at the plug or the breaker before any cover comes off - a capacitor can hold a charge after the power is off. Do not hold a panel against the case with a hand while the compressor runs; use packing and let go of it.
Models in the TWW family
Reference| Model number | Family key |
|---|---|
| TWW115 | alpicool:refrigerator:tww |
| TWW35 | alpicool:refrigerator:tww |
| TWW45 | alpicool:refrigerator:tww |
| TWW55 | alpicool:refrigerator:tww |
| TWW75 | alpicool:refrigerator:tww |
| TWW95 | alpicool:refrigerator:tww |
When to call a technician
Call when the noise is continuous rather than rhythmic and does not change with load, position or clearance: that combination points at a bearing or a mount, and both are behind a panel.
Other faults covered for this line
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
