LG Washing Machine Ed4 Error
Applies only to LG washers with the ezDispense automatic dispensing system. LG documents Ed4 inside its ezDispense block on the front-load list, paired with Ed3 — the same symptom, a different named cause.
What to check first
- Check the softener reservoir holds liquid softener only (powder softener goes manually in the drum), and clear any residue blocking the tray's flow path.
- Re-seat the tray fully after cleaning it.
- If Ed4 persists after the tray checks, it is service: an open circuit is not a user repair.
Ed4 reports the same event as Ed3 — the machine dosed, or tried to, and the softener amount did not decrease — but where Ed3 names a faulty pump detected, Ed4 names the cause electrically: an open circuit in the softener pump. The pump is not responding because its circuit is broken, not (only) because the pump itself has failed.
LG treats Ed4 within the ezDispense family block, and this page follows that guidance: tray checks first, because a blocked tray — or the wrong product in it — produces the identical detection, then LG's service ending for the circuit fault itself. The full family is introduced on the ezDispense family overview.
Safety first
- Unplug the washer before removing the dispenser drawer fully or cleaning deep in the dispenser housing.
- Detergent and softener residue is slippery and an eye irritant: rinse hands after handling the tray, and keep spilled liquid off the floor where it is a slip hazard near a machine you are leaning into.
- An open circuit is inside the machine's wiring: there is no owner-level repair for it, and the tray checks on this page are the home limit.
- Stop condition: stop using the machine and unplug it — and do not run it again until it has been checked — if you smell burning, see smoke, find damaged electrics (a scorched plug, a melted or cut cable), or water is leaking in quantity.
Common causes
An open circuit in the softener pump
LG's named cause for Ed4. The pump's electrical circuit is open — a broken connection or failed circuit path — so the pump cannot run and the softener level never falls.
The wrong product, or a blockage producing the same detection
The machine detects the outcome (softener not decreasing). Powder softener in the dispenser — which LG says belongs manually in the drum — and residue blocking the tray's flow path both produce that outcome. The tray checks rule them out before the circuit is blamed.
Step-by-step checks
- Audit the softenerConfirm the softener reservoir holds liquid softener only. Powder softener in the dispenser is a fault to correct first — it is added manually, directly in the drum.
- Clear and re-seat the trayRemove the tray, clear residue blocking its flow paths, rinse, and re-seat it fully. Run a cycle: if the level falls and Ed4 stays away, the tray was the fault.
When to call a technician
If Ed4 persists after the tray checks, LG's ezDispense guidance ends at service: the open circuit in the softener pump is a wiring-level diagnosis. Quote Ed4 when booking — it tells the technician the machine named a circuit fault, where Ed3 names the pump itself.
Model differences that matter
| Machine type | What changes |
|---|---|
| ezDispense models | Ed4 lives here, in the softener dosing system: the machine monitors the reservoir level and reports the pump circuit when dosing does not happen. |
| Manual-dispenser models | No Ed codes — there is no dosing pump or pump circuit to report. Softener is dosed by hand from a standard drawer compartment instead. |
One-page checklist
- Liquid softener only in the softener reservoir
- Tray removed, residue cleared, tray re-seated fully
- Cycle run — softener level falling again
- Ed4 persists — service booked with Ed4 quoted (open circuit)
Official LG references
Questions people ask about Ed4
Ed4 or Ed3 — what is the difference?
The symptom is identical: the softener amount did not decrease. Ed4 names an open circuit in the softener pump; Ed3 is the machine detecting a faulty pump. Do the same tray checks for both — the codes differ so the technician starts in the right place.
Can I fix an open circuit myself?
No. The tray checks are the home limit; an open circuit is inside the machine's wiring and is a service diagnosis. What you can do is rule out the blockage and wrong-product causes that produce the same detection, and quote Ed4 exactly when you book.
Can I use powder softener in the ezDispense drawer?
No — LG's guidance for Ed3/Ed4 is explicit: only liquid softener belongs in the dispenser; powder softener is added manually, directly in the drum.