WM3997HWA is a discontinued all-in-one washer/dryer, one generation newer in its “HWA” suffix than the WM3987HW but still built before LG’s current heat-pump combo platform. It’s worth setting expectations correctly on any of these older combo units: drying performance on a single-drum design without a dedicated heat pump was never going to match a standalone LG dryer of the same era, and a slow dry cycle on this model is often the platform behaving as designed rather than a developing fault.
Where an actual fault is suspected, the same rule applies as on every combo unit in this file: confirm the wash phase completes normally first. If it does, the drying mechanism is where the problem lives, and it can be diagnosed and repaired on its own without touching the wash-side components.
Key Features
- Front-load all-in-one washer/dryer
- Earlier-generation LG combo drying technology
- TurboWash cycle-time reduction on the wash phase
- Single-drum design
Most Common Issues on This Model
OE drain fault
Dry cycle underperforming compared to a standalone LG dryer
UE unbalance fault
IE fill fault on the wash phase