Samsung Dishwasher Leaking From the Bottom: Where to Look

A damp patch on the floor in front of a dishwasher can mean a few drops from an overfilled door gasket or a steady leak from a failing part. Treat any leak as a reason to take a careful, ordered look. Water near an electrical appliance is a safety matter first and a repair matter second, and the base of a dishwasher is where the electrical parts, pumps and hoses all meet.

First, make it safe

If water is pooling, switch the dishwasher off at the breaker. Close the water supply valve under the sink. Mop up the floor so that you can see where fresh water appears. In flats and condos with a unit below you, a leak can cause damage beyond your own kitchen, so do not postpone this. If water has reached the outlet or the breaker panel, keep away and call a licensed electrician from a dry area.

Find out where the water starts

Dry the floor and the front of the dishwasher. Slide a piece of paper or a dry towel under the unit’s front edge. Run a short cycle and stop it as soon as you see new water, watching the following spots:

• The door edge and bottom: water that drips from the corners of the door often comes from a worn or dirty gasket, or from a door that does not close squarely.
• The front of the base: a leak here can come from the tub, the pump seal or an inner hose, and is more serious than a gasket drip.
• Under the sink: check the supply valve, the supply line and the drain hose connection, then the air gap or disposal connection. A loose clamp or a cracked fitting can leak only when the dishwasher drains.
• The cabinet floor beside the unit: a leak from the water inlet or a fitting at the side can run toward the base.

Common causes in plain language

• Door gasket or door not sealing. Food residue, a bent seal, or a rack that blocks the door from closing fully can all let water escape.
• Too much suds. Hand dish soap in the tub produces foam that pushes out around the door. If that happened, wipe the foam out and run a rinse before blaming the machine.
• A drain that backs up. A clogged filter, a kinked hose or a blocked disposal inlet can hold water in the tub until it overflows. See the 5C drain code page for what that code means.
• A leak sensor trigger. If the base collects water, a sensor may stop the cycle and show a code; the LC leakage code page explains it. Tilting or moving the unit does not clear it, and the sensor is a symptom, not the fault.
• A worn pump seal, hose or tub fitting. These are inside the unit, and they take a technician to find and replace.

Install details that change the picture

San Francisco kitchens often squeeze a dishwasher between a sink cabinet and a wall, with limited room to see the hoses. In older flats, drain lines sometimes join a shared stack or a disposal with a tight connection, and a hose clamp that has aged may weep only when the pump pushes water through. A dishwasher that sits slightly out of level can send water toward the front edge, and a unit that was moved after a remodel may have a hose pinched behind it. Landlords and property managers should also check whether the cabinet floor under the dishwasher has softened, because a long-running slow leak can be invisible until the wood swells.

Owner checks that are safe

1. Wipe the gasket and the tub rim with a damp cloth.
2. Clean the filter and drain screen following the manual.
3. Check that no dish or utensil keeps the door from closing fully.
4. Verify that you used dishwasher detergent only.
5. Check the visible connections under the sink for moisture, without moving the dishwasher.

What not to do

Do not run the dishwasher to see if the leak goes away. Do not take off the kick plate and handle wiring while the circuit is live. Do not pull the unit forward by the hoses, and do not seal anything with caulk or tape as a fix. If the leak is steady, leave the machine off and the supply valve closed until it is diagnosed.

When to book

Book if you see water from the base after the gasket and detergent checks, if a leak code appears, if the cabinet floor is wet or soft, or if you cannot trace the source. We diagnose before repair and give a written estimate, and nothing is repaired without your approval. See Samsung dishwasher repair and the Samsung dishwashers guide, or look at the DW70H83YETRAA model page for an example. If you are unsure of your model, read how to find the model number.

After the leak is stopped

Once the source is found and the dishwasher is safe to use, dry the cabinet floor thoroughly and check the neighboring cabinets and wall for staining. Wood that stays damp can swell and grow mold. If water ran toward a neighbor’s unit in a multi-family building, tell your property manager early, so the damage can be checked before it spreads. Keep photographs of the wet area and of the machine as a record.

Frequently asked questions