Maytag MDB7749SBM1 undercounter dishwasher Parts

For the Maytag MDB7749SBM1 dishwasher, the most common issues we see are poor cleaning results and draining problems. These usually come from loading and maintenance (blocked spray, dirty filter, or a kinked drain path), but they can also point to a failing pump or water fill problem; check the MDB7749SBM1 owner's manual for the model’s recommended care and cycle use.

Most common symptoms and what they usually mean

• Dishes still dirty: spray arms blocked, overloading, or low water temperature.
• Water left in the bottom: drain hose kink/plug, disposer inlet plug not removed, or a weak drain pump.
• Not filling with enough water: water supply valve off, inlet screen clogged, or a failing inlet valve.
• Leaks at the door: door not closing squarely, debris on the seal, or a worn lower door seal.
• Won’t start: door not fully latched, tripped breaker, or cycle not set to start.

Quick checks we recommend first (fast, no parts)

1. Confirm the door closes and latches firmly.
2. Verify the water supply is turned on.
3. Run the shortest cycle and check for water in the tub after about 2 minutes (then unlatch, wait 5 seconds, and open).
4. Inspect the drain hose routing for kinks and clogs.
5. Reset power at the breaker for 1 minute if the control seems unresponsive.

When a part is the likely cause

Symptom	Most likely part area	Example part for MDB7749SBM1
Hums but won’t drain	Drain system	Dishwasher drain pump WPW10348269
Slow fill or no fill	Water supply	Dishwasher water inlet valve W11175771
Door won’t stay shut	Door closure	Door latch W10619006
Drips at bottom of door	Door sealing	Dishwasher door seal, lower WPW10497235

Why it matters

Poor cleaning and standing water are often caused by simple restrictions (spray, filter, drain path). Fixing those early helps prevent odor, repeat clogs, and extra wear on the sump and motor assembly.

Last updated: February 2026

Yes. Your Maytag MDB7749SBM1 dishwasher uses a filter system in the bottom of the tub that should be checked and cleaned regularly to keep wash performance strong and prevent drain issues. We recommend inspecting it about once a month, or sooner if you see food debris left behind.

Where the filter is and what it does

In most Maytag undercounter dishwashers like model MDB7749SBM1, the filter sits under the lower spray arm area at the bottom of the tub. It traps food soil so it does not get recirculated onto dishes or pushed into the drain path.

Why it matters

A clogged filter can cause:

• Grit or food particles left on glasses and plates
• Poor water circulation and weaker spray
• Slow draining or standing water
• Odors from trapped debris
• Longer cycle times as the dishwasher struggles to clean

How to clean the dishwasher filter

Use these steps as a safe, typical process; follow the exact removal and reinstallation details in the MDB7749SBM1 owner’s manual.

• Turn off the dishwasher and let it cool if it just ran
• Pull out the lower rack
• Remove any visible debris from the sump area
• Unlock and lift out the filter assembly (usually a twist-to-unlock motion)
• Rinse the filter under warm running water; use a soft brush for stuck-on soil
• Reinstall the filter fully seated and locked before running a cycle

Quick troubleshooting guide (filter-related symptoms)

Symptom	Most common cause	What we do first
Dishes feel gritty	Filter loaded with soil	Clean filter and run a rinse cycle
Water left in bottom	Filter or drain path restricted	Clean filter, then check the drain hose routing
Bad odor	Debris trapped in filter	Clean filter and wipe the sump area
Poor drying	Heavy soil and low rinse performance	Clean filter and use rinse aid per the manual

When cleaning the filter is not enough

If the dishwasher still will not drain well after cleaning, the drain system may need attention. Common next checks include the drain hose for kinks and the drain pump for blockage or failure. For this model, the replacement part is the dishwasher drain pump WPW10348269.

Last updated: February 2026

A Maytag dishwasher like model MDB7749SBM1 is built around a water-fill system, wash and drain pumps, a filtration area, spray arms, racks, and door components that seal and latch. These parts work together to bring water in, heat it, spray it, then drain it out reliably.

Main dishwasher parts (what they do)

• Water inlet valve: opens to let household water enter the tub (common replacement: dishwasher water inlet valve W11175771).
• Wash system (sump and motor): circulates water through the spray arms (common replacement: dishwasher sump and motor assembly WPW10780877).
• Drain system: pushes used water out through the drain hose (common replacement: dishwasher drain pump WPW10348269 and dishwasher drain hose 8269144A).
• Heating system: heats water and helps drying (common replacement: dishwasher heater W10703867).
• Racks and rack hardware: holds dishes and lets racks roll smoothly (example: whirlpool dishwasher dishrack wheel W10195416V).
• Door system: latches closed and seals to prevent leaks (example: door latch W10619006 and dishwasher door seal, lower WPW10497235).

Quick “system” view

System	What you notice when it fails	Example part for MDB7749SBM1
Fill	No water entering, weak fill	Water inlet valve
Wash	Poor cleaning, low spray	Sump and motor assembly
Heat	Cool water, poor drying	Heater
Drain	Standing water after cycle	Drain pump, drain hose
Door	Leaks or won’t start	Door seal, door latch

Where these parts show up during install

During installation, the drain hose connection, clamps, and routing matter because the hose and wiring must not interfere with the motor area. We also secure the dishwasher to the cabinet and verify door clearance and even spacing in the opening; those checks help prevent rubbing, leaks, and vibration. See the installation guide for the exact routing and clearance steps for MDB7749SBM1.

Why it matters

Knowing which “system” a symptom belongs to (fill, wash, heat, drain, or door) helps you choose the right Maytag dishwasher parts faster and avoid replacing good components.

Last updated: February 2026

On the Maytag MDB7749SBM1 dishwasher, the F6 E1 error code indicates the control is detecting a condition that prevents the dishwasher from starting or resuming a cycle. If a cycle is already running, it can continue to the end, but the dishwasher blocks starting a new cycle until the issue is corrected.

What to do first (fast, safe checks)

• Press Cancel/Drain and let the dishwasher complete the drain.
• Open the door, then close it firmly to confirm it is fully latched.
• Reset power: switch the breaker OFF for 1 minute, then back ON.
• Confirm the water shutoff valve is fully open and the supply line is not kinked.
• Check the sink drain or disposer connection for a clog that can slow draining.

Most common causes and what they affect

What you notice	What it points to	What to check next
Won’t start or stops quickly	Door not recognized as closed	Latch engagement and door alignment; latch switch operation
Water left in tub	Drain problem	Drain path, hose routing, drain pump performance
Slow fill or no fill	Fill problem	Water supply, inlet screen, inlet valve operation

Parts that commonly relate to start, fill, or drain problems

If your checks point to a specific system, these model-compatible parts are common fixes:

• Door latch W10619006 (door must latch for the control to run)
• Dishwasher water inlet valve W11175771 (controls water entering the tub)
• Dishwasher drain pump WPW10348269 (pumps water out during drain)

Why it matters

This code is the dishwasher’s way of preventing a cycle from running when it cannot reliably manage the door status, water fill, or draining. Correcting the root cause restores normal washing and helps protect the control and motor.

Where to confirm the exact steps for your control panel

Use the troubleshooting and cycle guidance in the MDB7749SBM1 owner’s manual for the correct button sequence, reset steps, and any model-specific indicators.

Last updated: February 2026