Samsung MDB6709AWB1 Dishwasher — Common Problems & Parts That Fix Them
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Understanding the Problem
Overview: The Samsung MDB6709AWB1 is a common mid-size dishwasher. Typical issues homeowners see are: won't start or lose power mid-cycle, not draining, leaking, poor wash results, and error codes. Below are prioritized diagnostics and step-by-step repair actions for each major symptom so you can isolate and fix the problem. 1) Dishwasher won't start or has intermittent power 1.1 Check basic power: confirm the dishwasher is plugged in, the household breaker/fuse is on, and there is 120VAC at the outlet. If wired, verify the junction box connection is secure. 1.2 Inspect door latch and switch: the dishwasher will not start if the door latch/switch is faulty. Open the door and inspect the latch for broken plastic or debris. With power off, test continuity on the door switch with a multimeter; replace if open when latched. 1.3 Control board / touchpad faults: if power is present but controls are unresponsive or the unit reboots, first try a power reset (turn off power at breaker for 60 seconds). If the problem returns, the main control board or user interface may be failing—inspect for burn marks, bulging capacitors, or water intrusion and replace the damaged board. 2) Dishwasher not draining 2.1 Clear the filter and sump: remove the bottom rack, unscrew/remove the filter assembly and clean food/debris. Many drain problems are caused by clogged filters or trapped food. 2.2 Check the drain hose and garbage disposal connection: ensure hose is not kinked and the knockout plug has been removed from a connected disposal. Disconnect the hose and flush it. 2.3 Test/replace the drain pump: with power off, access the drain pump (lower front kickplate removed). Inspect for foreign objects and test the pump motor for continuity. If you hear humming but no impeller movement or the pump has no continuity, replace the drain pump assembly. 2.4 Check drain solenoid and check valve: some models have a check valve or solenoid in the drain path—inspect and replace if stuck. 3) Leaking (water under or around dishwasher) 3.1 Inspect door gasket and inner door: open the door and check the door seal for tears, deformation, or debris. Clean and if compressed/damaged, replace the gasket. 3.2 Inspect hose connections: shut off water, pull out unit, and check inlet hose, drain hose, and clamps for tightness and cracks. Replace leaking hoses and clamps. 3.3 Look for cracks in the tub or spray arm: examine lower tub for rust or cracks and spray arm for damage that could spray water out of the door. Replace defective components. 3.4 Check dishwasher leveling: a very unlevel dishwasher can cause door leaks—adjust leveling legs so the front is slightly lower than the back and test. 4) Poor cleaning results (dishes not clean or spots) 4.1 Clean filters and spray arms: remove and clean filter assembly, rinse screens, and clear spray arm holes. Reinstall and run a short cycle. 4.2 Verify water temperature and inlet valve: ensure hot water at the sink is 120°F (49°C). Check the water inlet valve for proper opening—if the dishwasher fills slowly or not at all, replace the inlet valve. 4.3 Check detergent and rinse aid use: use fresh detergent and proper rinse aid; excessive detergent or hard water can cause spotting. 4.4 Inspect circulation pump: if you hear the wash motor hum but no water is being circulated, the circulation pump or motor may be failing—test motor continuity and replace if defective. 5) Error codes and diagnostics 5.1 Read codes: Samsung models will display error codes (or LED blink patterns). Document the code, then consult the service manual or Samsung error list to identify the subsystem (e.g., HoseF/Leak, 1E = long fill, 5C = drainage error). Use that as your starting point. 5.2 Run service test (if available): a technician/service mode will run pumps and sensors for diagnosis. If you don't have the service manual, start with the symptom-based checks above. General step-by-step example: Replacing the drain pump - Tools: screwdriver set, multimeter, towel, bucket, pair of pliers. - Step 1: Turn off power at the breaker and shut off the water supply. - Step 2: Pull the bottom front kickplate off and remove the lower access panel to expose the pump area. - Step 3: Place towels and a small container to catch residual water. Disconnect the drain hose and electrical connector from the pump. - Step 4: Remove mounting screws or clips holding the pump and remove the unit. Inspect for debris and impeller damage. - Step 5: Test the pump motor with a multimeter for continuity. If open or if motor hums with no impeller movement, replace the pump. - Step 6: Install the new pump, reattach hoses and connectors, reassemble panels, turn on water and power, and run a short drain cycle to verify correct operation. Safety note: Always disconnect power at the breaker and shut off the water supply before servicing. If you are not comfortable working with electrical components or lifting/pulling the dishwasher, call a qualified technician.
Common Symptoms
Won't start or loses power mid-cycle; not draining; leaking from door or underside; poor cleaning results; error codes or flashing LEDs.
Common Causes
- Faulty or tripped power supply / bad door latch or control board
- Clogged filter, kinked drain hose, or failed drain pump
- Worn door gasket, loose hose/clamp, or cracked tub
- Clogged spray arms, failed circulation pump, or inlet valve issue
Popular Parts That Fix This Problem
These are the most common replacement parts that fix this problem. When you're ready to order, click below to find the right part at ProsourceParts.com — just search by your appliance model number for a guaranteed fit.
Helpful Repair Tip
If the dishwasher hums at the end of a cycle but won't drain, remove the kickplate and run a drain — listen at the pump. Humming with no water movement usually means a failed drain pump or jammed impeller.
Frequently Asked Questions
How do I reset my Samsung MDB6709AWB1 dishwasher?
To reset: turn off the dishwasher power at the house circuit breaker or unplug the unit for 60 seconds, then restore power. This clears most transient faults. If errors return, document the error code and proceed with the symptom-based checks (power, door latch, drain, etc.).
Can I replace the drain pump myself and how long does it take?
Yes — a competent DIYer can replace the drain pump in about 30–60 minutes. Key steps: disconnect power and water, remove kickplate and lower access panel, disconnect hoses and electrical connector, unbolt and remove the old pump, install the new pump, reconnect hoses and wiring, and test. If you are uncomfortable with electrical work or moving the dishwasher, hire a qualified appliance technician.
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