An LG washer dryer combo leaking from the bottom needs one extra diagnostic detail: does water appear during washing, draining, or the drying phase? All-in-one units share the drum but can add condensing or heat-pump water paths that a washer-only guide does not cover. Record the full model number before troubleshooting.
Match the Leak to the Operating Phase
During fill or wash
Check accessible supply fittings, dispenser runoff, door-gasket contact surfaces, and excess suds.
During drain or spin
Inspect the external drain hose and standpipe. On applicable models, a pump-filter cap or residual-drain plug may leak.
Only during drying
A leak unique to drying can involve model-specific condensing, recirculation, or drain paths. Stop use and arrange service rather than opening the cabinet.
While the combo is off
Close supply valves. A continuously wet inlet connection or valve must be diagnosed before further use.
Safe Step-by-Step Check
- Cancel the program, close water valves, and unplug from a dry location.
- Record whether the last phase was wash, drain, spin, or dry and note any OE or other code.
- Inspect visible hoses, door glass, gasket folds, dispenser, and household drain.
- Use HE detergent at the model-appropriate dose; combo drums are not a reason to add extra detergent.
- Clean and reseat a user-accessible filter only by the exact manual procedure.
- Do not remove heat-pump, condensing, top, or lower covers.
Parts a Technician May Inspect
Possible components include the inlet valve, dispenser hose, door boot, drain pump, pump-filter housing, tub hose, drain hose, and model-specific drying or condensing water circuit.
When to Call a Professional
Request LG-qualified service for a leak that occurs only during drying, water behind panels, a torn boot, repeated error codes, or any electrical symptom. Call a plumber if the standpipe backs up.
Related Guides
Use LG Washer Leaking From Bottom for general timing checks, LG Front Load Washer Leaking From Bottom for the door and filter area, and LG OE error troubleshooting for drain failure.
FAQ
Can the dryer section create water?
Some combo designs use condensation or heat-pump systems, so model-specific drying-phase water paths may need inspection.
Should I keep using dry-only mode?
No if leakage occurred during drying. Keep the unit off until diagnosed.
Is a washer dryer combo the same as a stacked pair?
No. This guide concerns a single all-in-one drum appliance; stacked separate machines have different systems.
Manufacturer reference: LG US leak troubleshooting for washers and combos.