WM3987HW is a discontinued LG front-load all-in-one washer/dryer from an earlier generation than the current heat-pump combo line. As with any older combo unit, the wash side and the dry side are best diagnosed as separate questions: a load that washes and spins normally but never fully dries points at the drying mechanism specifically, not at anything shared with the wash cycle.
CL is worth naming here specifically because it is not a fault — it is LG’s control-lock indicator, and on an older combo unit with a less familiar control layout than today’s models, it gets reported as a broken machine more often than the newer generation does. Checking for a locked control panel before booking a service call can save an unnecessary visit.
Key Features
- Front-load all-in-one washer/dryer
- Earlier-generation LG combo drying technology
- Single drum for both wash and dry
- Compact footprint
Most Common Issues on This Model
OE drain fault
Dry cycle running long or not fully drying a load
UE unbalance fault
Control lock (CL) engaging unexpectedly — not a fault, but frequently reported as one