The short answer
A new noise from Avanti STW is identified by when it happens, not by what it sounds like. This is a light cabinet with a vertical tub, a lid switch that gates the spin, a small drain pump and a hose run that is often temporary rather than plumbed — and each of those parts runs during a different part of the cycle, so a noise that appears only during spin, only during drain or only during agitation has already named its own source. On a compact top-loader the cabinet is lighter than the load it spins, so anything that upsets the balance moves the whole machine.
What you observe on these models
- A hard rattle during spin only — Something loose that is only thrown around at speed — usually an object that has left a pocket and reached the pump or the outer tub.
- A whine or grind during the drain step — The pump runs only then, which makes the timing conclusive.
- A squeal at the start of agitation or spin — A belt or coupling slipping under load.
- NEAR MISS — clicks and hums while filling — Solenoids and water hitting a dry tub.
Causes, most likely first on STW
- Load distribution and how the machine stands — A machine that is not level, or a load that has gathered on one side, converts spin energy into cabinet movement. This is the single most reported washer noise and it is not a fault. Ranked first on Avanti STW because a shallow tub with short suspension travel reaches its limit far sooner than a full-size machine, so load distribution leads the list here.
- The tub bearing or the suspension — A roar that rises with spin speed and continues as the drum coasts down is bearing noise. It is the one item on this list that will not wait.
- A foreign object in the tub, the pump or between the tubs — Coins, wires from underwiring and buttons leave the pockets, pass the tub and arrive at the pump. The noise is a hard rattle that is worst at speed and absent at rest.
- The drive belt, coupling or motor — A belt that has glazed squeals at the start of agitation or spin; a worn coupling gives a knock under load and slips under a heavy one. Last on this list, and the item that every cause above it can imitate exactly.
Check in this order, and why that order
- Run one empty cycle and note the stage — Fill, agitation, drain and spin each involve different parts. Which stage the noise belongs to eliminates most of the list at no cost.
- Check level and rock the cabinet — A machine that moves on its feet will be noisy whatever else is true, and it can be fixed with a spanner in five minutes.
- Open the pump filter or check the pump access — watch a cycle from the lid with the machine loaded as the owner loads it — on this class of machine the load and the hose run explain more faults than the parts do — The lid and the top console lift or come forward, and the pump and hoses are reached from the back or the base with the machine tipped. Objects arrive here by design and a coin at the impeller is a complete explanation.
- Spin the drum by hand with the power off — A dry rumble or a gritty feel points at the bearing; smooth and silent points away from it.
Before you open anything
Safety
Unplug the washer or switch off its breaker before removing any panel, and close the tap before touching a fill hose. A capacitor can hold a charge after the power is off.
Models this page covers — the STW family
Reference| Model number | Family key |
|---|---|
| STW16D0W | avanti:washer:stw |
| STW20D2P | avanti:washer:stw |
| STW30D0W | avanti:washer:stw |
When to call a technician
Call when the noise is a rising roar during spin that continues as the drum coasts down, when the drum can be moved by hand against its own suspension, or when the noise arrived with water where it should not be. Call sooner if the machine is also failing to spin. Before ordering anything, match the plate against the STW variant table above. The family is a small top-load washer, and parts that look alike across a brand's other lines often do not fit it.
Other problems covered for the STW family
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
