LG LDF6920ST dishwasher Parts

The LG LDF6920ST dishwasher measures 23 3/4" W x 33 1/2" H x 24 5/8" D. For installation planning, we recommend confirming your cabinet opening and clearances using the LDF6920ST installation guide.

Dimensions and key specs (LDF6920ST)

• Width: 23 3/4"
• Height: 33 1/2" (dishwasher body)
• Depth: 24 5/8"
• Weight: 90 lb
• Water pressure requirement: 20 to 120 psi
• Recommended inlet water temperature: 120°F (49°C)

Installation opening and clearance tips

Even when the dishwasher body dimensions match your space, installation can fail if hoses or wiring are pinched.

• Measure the cabinet opening at the front and back (some openings taper)
• Confirm you have room for the water supply line, drain hose, and electrical cable routing
• If installing in a corner, allow clearance so the door opens fully
• Make sure the floor is level so the unit can be adjusted using the leveling feet

Quick reference table

Measurement	Size
Width	23 3/4"
Height	33 1/2"
Depth	24 5/8"
Weight	90 lb

Why it matters

Correct dimensions help prevent fit issues like a dishwasher that will not slide in fully, a door that rubs the cabinet, or kinked hoses that can cause draining or filling problems.

Last updated: January 2026

For the LG LDF6920ST dishwasher, we can’t identify a single “most common” failure from model-specific documentation alone. What we can say is that the LDF6920ST troubleshooting guide most often points you to drain and fill checks first because those issues can stop a cycle quickly.

What the LDF6920ST manual has you check first

LG’s troubleshooting section for this model highlights these frequent starting points:

• OE (drainage problem): drain hose kinked, clogged, or frozen
• IE (water inlet problem): inlet hose kinked, clogged, or frozen; water supply issue
• Food soil left on dishes: spray arm jet holes blocked, improper loading, low inlet water temperature
• Spots/film: low water temperature, wrong detergent amount, rinse aid empty
• Long run times: connected to cold water (heating incoming water takes longer)

For the exact error-code descriptions and checks, use the LDF6920ST owner’s manual.

Quick checks we recommend before replacing parts

Start with the simple, high-impact items:

• Confirm the unit is connected to hot water; LG specifies 120°F minimum inlet temperature for best wash performance.
• Inspect the drain hose routing for kinks or pinches behind the dishwasher.
• Check the sink drain or disposer connection for a blockage where the dishwasher hose connects.
• Clean spray arm holes if you see food soil left on dishes.
• Use only automatic dishwasher detergent (hand dish soap can cause oversudsing and poor results).

When a part is commonly involved

If you’ve cleared restrictions and still have draining trouble or a leaking hose, the drain hose assembly is a common next suspect.

• Replacement option for this model: dishwasher drain hose assembly AEM69493807

Symptom	What it often points to	First step
OE or standing water	Drain restriction or kink	Inspect and clear drain hose path
IE or no fill	Supply restriction	Check water valve is on; inspect inlet hose
Not cleaning well	Spray/flow issue	Clean spray arms; correct loading

Why it matters

Drain and fill problems can leave water in the tub, interrupt cycles, and reduce cleaning performance. Checking hoses, spray arms, and water temperature first can prevent unnecessary part replacement.

Last updated: January 2026

On the LG LDF6920ST dishwasher, the owner’s manual does not identify a specific “red light” indicator, so we can’t tie a blinking red light to one exact meaning for this model. In practice, a blinking indicator is often tied to an option light (like Sanitary) or an error condition shown on the display.

Check what the light is actually indicating

On LDF6920ST, the control panel uses labeled indicator lights and may also show error codes on the display.

• If Sanitary is selected, the Sanitary light can blink until the water reaches the sanitizing temperature, then stay on.
• Look closely for any letters on the display (error code) while the light is blinking.
• If the dishwasher stopped, turn Power off, wait 10 seconds, then restart.
• Make sure the door is fully closed and latched.
• Confirm the hot water supply is in the correct range for this model.

For control panel behavior and option lights, use the LDF6920ST owner’s manual.

If an error code is showing, use this model’s code list

The LDF6920ST manual lists these codes in troubleshooting:

Code on display	What it means in the manual	What we check first
IE	Water inlet problem	Water supply on, inlet hose not kinked/frozen
OE	Drainage problem	Drain hose not kinked/clogged
FE	Excessive water supplied	Shut off water, check fill system
E1	Water leakage problem	Look for leaks in tub/hoses, float issues
HE	Heater circuit failure	Heating circuit needs diagnosis
TE	Thermistor failure or very high inlet water temperature (over 194°F)	Verify water temp, sensor circuit
PF	Power failure (not an error; restarts after 10 seconds)	Restart cycle if needed

For plain-language explanations and next steps, see LG dishwasher error codes.

Parts that commonly relate to “won’t run” or fill/drain errors

If your blinking light is paired with an IE or OE code, these model-compatible parts are often involved:

• Dishwasher water inlet valve 5221DD1001F (controls water entering the dishwasher)
• Dishwasher drain hose assembly AEM69493807 (routes drain water to the sink/disposer)
• Dishwasher float switch 3W40025P (helps prevent overfilling)

Why it matters

Correctly identifying whether you’re seeing an option light (like Sanitary) or a true error code prevents unnecessary part replacement and helps you focus on the right system first (water in, water out, heating, or leak protection).

Last updated: January 2026