LC on a Samsung dishwasher is a leak alert. Most models use a float switch or leak sensor in the base pan that detects water where it shouldn’t be, and the control board immediately halts the cycle and often runs the drain pump to clear standing water as a protective measure.
What Usually Sets Off a Leak Sensor
- Oversudsing from using regular dish soap instead of dishwasher detergent, which can foam over and drip down into the base
- A door gasket that’s worn, twisted, or has a gap letting water spray out during the wash
- A loose hose connection at the pump or spray arm assembly
- Condensation or a genuine small leak collecting in the base pan over several cycles
Checks Before Calling for Service
Open the door and run your fingers along the entire rubber door gasket, feeling for any section that’s stiff, torn, or not sitting flush — wipe away food residue that can prevent a full seal. Confirm you’re using dishwasher-specific detergent, not liquid dish soap, since suds overflow is one of the most common LC triggers. Pull the dishwasher out slightly if you’re able and look underneath for any visible water pooling in the base.
Dry the base pan area with a towel if accessible, then run a short cycle and watch for where water first appears.
When to Bring in a Technician
A confirmed leak from a hose or pump seal needs a hands-on inspection to find the exact source before it causes water damage to your floor or cabinets. Our Samsung dishwasher repair technicians trace leaks to their source and repair them properly.
This is an independent repair service and is not affiliated with Samsung.
