If the drain hose is not installed properly, the unit will not drain properly.
This allows water to back flow into the unit which can cause odors.
The odor could also be coming from the home’s drain to which the drain hose is attached.
So what is the solution exactly? It can be fixed by customer himself?
First Step, customer can fix drain hose location to be matched with attached photo
If Odor smell is still existed, please call LG Service Technician.