How can I tell if my water inlet valve is bad?

Common signs of a faulty water inlet valve include the dishwasher not filling with water, continuous filling, or leaking from the bottom. You might also hear a loud buzzing noise if the solenoid is failing to open or close properly.

Can I clean a water inlet valve instead of replacing it?

While some minor blockages might be cleared, a failing water inlet valve often has internal mechanical or electrical issues that cannot be reliably repaired by cleaning. Replacement is generally recommended for consistent performance and leak prevention.

What happens if a dishwasher water inlet valve leaks?

A leaking water inlet valve can cause water damage to your kitchen floor and cabinets. It may also lead to continuous water filling, potentially causing overfilling and further leaks, or it could prevent the dishwasher from filling correctly.

LG Dishwasher Water Inlet Valve Repair Guide

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🏆 RECOMMENDED PART

5221DD1001E Dishwasher Water Inlet Valve, Water Inlet Valve 5221DD1001C Replaces PS8769826, PS9495756, PS3527445, EA3527445, 2977831, AH3527

【Purchase Note】The dishwasher 5221DD1001E inlet valve is a replacement part for dishwashers， 5221DD1001E dishwasher water inlet valve is approximately 4.5 inches by 3.5 inches, operates on 12-volt DC, and has a power ...
【Replace Part Number】The water inlet valve 5221DD1001E replacement number 5221DD1001E, 5221DD1001C,2977831,AP5804631,PS8769826,AH3527445,EA3527445,PS3527445,PS9495756,AP5810251,1268129,3282910,EAP8769826,PD00024232,45...
【Compatible Models】Dishwasher inlet water valve - 5221DD1001E fit for LDF5545BD, LDFN3432T, LDS5540WW, LDT5665BB, LDT5665ST, LDT5665WW, LDT5678ST, LDT6809BD, LDT6809SS, LDT7797BD, LDT7797BM, LDT7797ST, LDT7808ST, LSDT...
【Features】Dishwasher 5221DD1001E inlet valve precise water inlet control, sensitive start/stop response, built-in backflow prevention, wide range of compatible water pressure, and high compatibility with the overall s...
【Problem Solving】This 5221DD1001E inlet valve resolves typical issues with dishwashers, such as failure to fill with water, continued water intake after shutdown, incomplete washing programs or abnormal running time, ...

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What the 5221DD1001E does

The water inlet valve controls the flow of water from your home's water supply into the dishwasher tub during wash cycles. It opens to allow water in and closes to prevent leaks.

Symptoms when this part fails

Dishwasher not filling with water
Dishwasher overfilling or continuous filling
Water leaking from the bottom of the dishwasher
Loud buzzing noise during fill cycle
Insufficient water for proper cleaning

Compatibility

Fits the LG family. Specifically:

Any unit originally equipped with OEM part number(s): PS8769826, PS9495756, PS3527445, EA3527445, 2977831, AH3527445.
Check the model/rating plate inside your appliance and compare it against the fitment table on the product listing before ordering — this guide does not list specific compatible models because Amazon does not provide verified fitment data through this pipeline.

Also replaces: PS8769826, PS9495756, PS3527445, EA3527445, 2977831, AH3527445

Tools you'll need

Screwdriver (Phillips/flat-head)
Pliers (slip-joint)
Adjustable wrench
Towels or rags
Bucket

Difficulty: Moderate · Time: 60-90 minutes

How to install the 5221DD1001E, step by step

Disconnect power to the dishwasher at the circuit breaker.
Shut off the water supply to the dishwasher.
Pull the dishwasher out from its cabinet enclosure.
Locate and disconnect the water inlet hose and electrical connections from the old valve.
Unmount the old water inlet valve from the dishwasher frame.
Mount the new water inlet valve and reconnect water and electrical lines.
Slide the dishwasher back, restore water and power, then check for leaks.