The Washer Stayed Dry for the Technician, Then Left Foam on the Floor
The LG WM500OHVA had been inspected three times without an internal wet trace. The customer used two detergent pods, and the display later showed SUD.
Why this did not look like a constant hose leak
The top, front, hoses, drain-pump area and rear of the washer were inspected, yet the technician found no wet spot during the visits. The customer photographs showed foam on the floor, and the event occurred only during the customer's cycles.
A similar symptom can have a different cause on another washer. A door seal, standpipe overflow, dispenser, internal hose or drain fault can also create an intermittent puddle.
The detergent clue and the later code
The customer reported putting two pods into each load. The leading explanation became excess foam escaping through a rear vent or air opening only after suds accumulated. The later SUD display independently confirmed that the washer detected an excess-suds condition, although it did not prove the exact path to the floor.
The technician asked the customer to try one pod and report another leak. No result from that comparison was posted.
Other branches that remained open
- A restricted drain inside the wall could overflow only during pump-out.
- A damaged door-handle guide could leave the door slightly loose even if the handle looked intact.
- An automatic detergent system, if fitted, would need to be separated from manually added detergent.
The strongest next reproduction would use the customer's normal load, detergent and cycle while observing the entire fill, tumble and drain sequence.