Samsung Dishwasher Error Code LC

The Samsung dishwasher error code LC indicates that the appliance has detected a leak or the presence of water in the base/flood tray (a leak detection/flood sensor activation). This safety feature immediately pauses the cycle to prevent further water damage and electrical hazard. Common user impacts include an interrupted or cancelled wash cycle, water on the floor, potential damage to cabinets or flooring, longer drying times or incomplete cycles after reset, and — if ignored — increased risk of mold, corrosion, and electrical shorts. The LC code can be triggered by an actual leak (hose, pump, gasket, or tub crack), overflow conditions (blocked drain or excessive suds), or by a faulty leak/flood sensor or control board reporting incorrectly.

Common causes

• Leaking drain hose or loose hose clamps
• Damaged or worn door gasket/door seal
• Cracked sump, pump housing, or outer tub allowing water into the base
• Faulty drain pump or pump seal leaking into the base
• Failed leak/flood sensor or float switch in base (false trigger)
• Clogged or blocked drain causing overflow
• Inlet valve stuck open or water inlet hose leak
• Excessive sudsing from wrong detergent or too much detergent
• Loose or damaged wiring to sensor or control board
• Corrosion or rust creating small leaks over time

Troubleshooting steps

1. Power off and isolate water: Switch off the dishwasher at the breaker and shut off the water supply to minimize risk and stop further leaking.
2. Check for visible water: Pull the dishwasher out (if possible) and inspect the floor and base area. Dry any water in the base with towels. Remove the lower kick plate to look into the base/flood tray area.
3. Reset the dishwasher: After drying the base and verifying no continuing leak, restore power and water, then perform a reset (power off for 1–5 minutes, then power on). If LC clears but returns, further investigation is needed.
4. Inspect hoses and clamps: Visually inspect the drain hose, inlet hose, and hose clamps for cracks, splits, or loose fittings. Tighten or replace parts as needed.
5. Examine door gasket and door area: Check the door seal for tears, gaps, or debris preventing a tight seal. Clean or replace the gasket if damaged.
6. Check the pump and sump area: Remove the filter and lower rack; inspect the pump housing and sump for cracks or leaks. Look for water stains, corrosion, or loose hose clamps at pump connections.
7. Test the leak/flood sensor and float switch: If accessible, inspect the sensor for corrosion, foreign debris, or loose connectors. Use a multimeter to test continuity if you are comfortable with electrical testing (power must be off and unplugged first).
8. Look for signs of overflow/sudsing: Ensure you are using the correct dishwasher detergent and amount. Excess suds can cause water to reach the sensor and trigger LC.
9. Run a short test cycle: With the base dry and hoses secured, run a short diagnostics or rinse cycle while watching for leaks. Check again under the machine after the test.
10. When to replace parts or call a pro: If you find a cracked tub/sump, persistent leak at the pump, a failed leak sensor, or wiring/control board damage, stop and contact a qualified technician. Replacing major components like the outer tub, pump assembly, or control board is best left to professionals.

Maintenance / Prevention Tips

• Inspect hoses and clamps every 6–12 months and replace rubber hoses every 5–7 years.
• Use only dishwasher-specific detergent and follow the manufacturer dosage recommendations.
• Avoid overloading the dishwasher; items blocking the door or spray arms can cause leaks and poor cleaning.
• Clean the filter and sump regularly to prevent clogs that can lead to overflow.
• Wipe and inspect the door gasket monthly for debris, wear, or damage; keep it clean and dry.
• Level the dishwasher to ensure the door seals and water drains correctly.
• Run a maintenance/cleaning cycle monthly with an approved dishwasher cleaner to remove grease and scale.
• Check for and remove any hard food particles that can clog the pump or drain path.
• Replace worn or cracked seals and hoses promptly instead of delaying repairs.
• Secure the dishwasher to the cabinet per installation instructions to prevent movement that can stress hoses and fittings.
• Keep the area under the dishwasher dry and inspect the base for moisture regularly.
• Install an under-appliance water alarm or an automatic shutoff valve for extra protection.
• Avoid using abrasive or corrosive cleaners that could damage gaskets or the tub finish.
• Ensure proper water pressure; very high pressure can stress inlet valves and hoses.
• Schedule periodic professional inspections if you notice small, recurring issues.

FAQ

Conclusion / Safety Notice

The LC error should be treated seriously because it signals water where it shouldn’t be and presents both property and safety risks. Always disconnect power and water before attempting inspection or repair. Minor fixes like tightening a hose clamp or replacing a door gasket can often be handled by a careful DIYer with the right tools and safety precautions. However, if you find water in the base, a cracked tub or pump, corroded wiring, or if the LC error persists after basic checks and resets, stop and call a qualified appliance technician or Samsung-authorized service. Professional diagnosis is recommended for electrical testing, replacing major components, and ensuring a safe, long-term repair.

If you are unsure at any step, contact Samsung support or a licensed repair professional rather than risking damage or personal injury.