Lds5540s Parts

The Dishwasher Micro Switch is an OEM part for LG dishwashers. It plays a crucial role in detecting the door's position, ensuring the dishwasher only operates when the door is securely closed. This switch helps maintain safety and proper functioning during the wash cycle.

Causes of a bad micro switch can include wear and tear from regular use, electrical malfunctions, or physical damage. A compromised micro switch can prevent the dishwasher from starting or stopping correctly.

Symptoms of a bad dishwasher micro switch include:

• The dishwasher not starting or stopping unexpectedly
• Error codes related to door issues
• The door not locking securely during operation
• Unresponsive control panel or buttons

This OEM LG part is also compatible with Sears/Kenmore models.

The Blower Motor Assembly is an OEM replacement part for LG dishwashers. Located inside the wash cavity, it functions to distribute heated air throughout during the dry cycle. Rapid rotation of the blower motor blades works to eject moisture from dishes and ensure thorough drying. 

Causes of a bad blower motor include failure of the motor itself, cracks in the blades that disrupt airflow, or bearing issues preventing proper rotation.

Symptoms include:

• Dishes still feeling damp after a cycle 
• Puddles of water remaining in the bottom of the dishwasher
• Water droplets on upper racks/dishes
• The motor producing grinding/squealing noises on startup

It is also compatible with some Kenmore dishwashers using LG components. 

The Check Valve is an OEM part for LG dishwashers. It prevents the backflow of water into the dishwasher, ensuring that water only flows in the intended direction. This helps maintain the efficiency of the washing cycle and prevents contamination of clean dishes.

The check valve can fail due to reasons such as wear and tear, blockage from debris or hard water deposits, or damage from high water pressure. Over time, the internal components can degrade, leading to improper sealing.

Symptoms of a bad check valve include:

• Water backing up into the dishwasher
• Poor cleaning performance due to improper water flow
• The dishwasher not draining properly
• Unusual noises during the wash or drain cycles

This OEM LG part is also compatible with certain models of Kenmore dishwashers.

The Float Assembly is an OEM replacement part for LG dishwashers. It is a sensor located inside the dishwasher that monitors water levels during wash cycles. The float assembly precisely indicates water levels to the control system to determine adequate water is available throughout the cleaning and rinsing functions. Proper water level detection is crucial for achieving sparkling clean dishes.

Causes of a faulty float include mineral buildup on sensors overtime, cracks or leaks developing, and damage to electrical wiring from impacts.

Symptoms of a bad float assembly include:

• Incomplete or inefficient wash cycles due to low water levels
• Water remaining in the bottom of the tub after a cycle
• Drainage issues related to inaccurate water level readings
• Error codes related to improper filling and draining of water

This OEM LG part is also compatible with some Sears/Kenmore models.

The Upper Spray Arm is an OEM part for LG dishwashers. This part is located at the top of the dishwasher tub, responsible for spraying water and detergent onto the upper rack of dishes during the wash cycle.

Causes of a bad Upper Spray Arm can include mineral buildup or debris clogging the spray holes, physical damage from impact or foreign objects, or wear and tear over time.

Symptoms of a faulty Upper Spray Arm include:

• Incomplete or ineffective washing of dishes on the upper rack
• Water not spraying evenly or not spraying at all from the upper arm
• Clogged or blocked spray holes
• Loud noises or grinding sounds during the wash cycle

This OEM LG part is also compatible with some Kenmore models.

This door hinge spring counterbalances the dishwasher door so it opens smoothly and stays where you set it. Replace a weakened or broken spring to restore proper door tension and prevent the door from dropping or slamming.

• Provides the tension that counterbalances the door through the hinge mechanism
• Helps the door open/close smoothly and remain at a desired angle
• If failed, symptoms include the door dropping quickly, feeling heavy, uneven side-to-side movement, or a loud snap when opening

• Disconnect power and turn off water supply before servicing
• Support the door and remove the toe-kick/access panel to reach the hinge area
• The spring is under tension—use gloves/eye protection and carefully relieve tension from the hinge hook
• Install the new spring in the same mounting holes/positions; check door balance (many techs replace springs in pairs for even tension)

The Upper Spray Arm Pivot Shaft is an OEM part for LG dishwashers. This part allows the upper spray arm to rotate and distribute water evenly throughout the upper rack during the washing cycle.

Causes of a bad part can include wear and tear over time, damage from foreign objects, or improper installation or alignment.

Symptoms of a bad Upper Spray Arm Pivot Shaft include:

• The upper spray arm not rotating or spinning
• Poor water coverage and cleaning performance in the upper rack
• Loud grinding or squeaking noises coming from the upper rack area

This OEM LG part is also compatible with some Kenmore models.

This door-mounted assembly stores detergent and rinse aid and releases them at the proper time in the wash cycle. Replace a cracked or non-dispensing unit to restore consistent detergent release and overall wash performance. What it does:

• Holds detergent and rinse aid within the inner door
• Releases detergent during the main wash cycle
• Meters rinse aid during the final rinse
• Helps prevent leaks at the dispenser opening
• Common symptoms: detergent left in cup, rinse aid not dispensing, dispenser door won't open, leaks or visible cracks

• One dispenser assembly

• Disconnect power and shut off water supply before servicing
• Remove inner door panel to access and replace the dispenser
• Transfer any reusable seal or hardware from the original part
• After installation, run a short cycle and check for leaks around the dispenser

The Rack Holder is an OEM part for LG dishwashers. This component is designed to fit on the dishrack and functions as an attachment point for the roller wheels. It facilitates smooth movement of the dishrack in and out of the dishwasher.

Over time, the rack holder can wear out or become damaged due to regular use, heavy loads, or accidental impact. Corrosion from moisture exposure or broken clips can also affect the holder's performance.

Symptoms of a bad rack holder include:

• Dishwasher racks not sliding in and out smoothly
•  Racks tilting or collapsing during loading or operation
• Unusual noises from the rack area when moving the racks
• Difficulty in securing the racks within the dishwasher

Causes of a bad rack holder can include wear and tear from regular use, physical damage due to heavy or improperly loaded racks, and corrosion or rust from prolonged moisture exposure.

This OEM LG part is also compatible with Sears/Kenmore models.

This lower spray arm (nozzle assembly) mounts at the bottom of the tub and spins to deliver pressurized wash water across dishes. Replacing a cracked or clogged arm restores even spray coverage and helps resolve poor cleaning results.

• Distributes wash water from the pump across the lower rack area
• Rotates to provide even spray coverage and rinsing
• Replaces warped, cracked, or clogged arms that reduce cleaning or cause noise
• Common symptoms: dishes not getting clean, spray arm not turning, visible damage or blockages

• Disconnect power at the breaker; open the door and remove the lower rack
• Release the old arm from the center hub (turn/unsnap retainer) and lift off
• Clear debris from the hub and filter area; seat the new arm fully and verify free rotation
• Restore power and run a short cycle to proper spray action

These top mounting brackets secure the dishwasher to the underside of the countertop to prevent shifting or tipping during use. Replace bent or missing brackets to maintain a stable, safe installation.

• Anchors the dishwasher to the countertop when top mounting is required
• Helps prevent forward tipping when racks are extended
• Restores a secure, level fit within the cabinet opening
• Common symptoms: loose or rocking unit; broken, bent, or missing brackets

• Disconnect power and water supply before servicing
• Pull the dishwasher forward enough to access mounting locations
• Position brackets flush under the countertop and fasten with manufacturer-approved hardware
• Ensure the dishwasher is level and anchored evenly on both sides

This small sleeve bushing supports a pivoting or rotating joint in your dishwasher, providing a smooth bearing surface. Replacing a worn bushing helps restore quiet operation and protects mating parts from further wear. What it does

• Provides a low-friction surface between a shaft/pin and bracket
• Helps maintain proper alignment and reduces wobble at the joint
• Can quiet squeaks or grinding caused by wear
• Replacing a cracked or flattened bushing can improve smooth movement

• 1 bushing

• Disconnect power and shut off water before servicing
• Support the door or component attached to the joint to relieve tension
• Note orientation; transfer any spacers/washers in the same order
• Inspect the mating pin/shaft for wear and replace related parts if damaged

This dishrack tine replaces a damaged or missing row of prongs on your dishwasher rack, restoring secure spacing for plates, lids, and other items so they stay upright throughout the cycle.

• Attaches to the rack to provide prongs that hold dishes upright and separated for effective washing and drying
• Helps prevent items from tipping over or obstructing spray-arm movement
• Common signs it's needed: broken, bent, rusted, or missing tines; flaking coating; dishes not staying in place
• Restores rack organization and usable loading capacity

• Disconnect electrical power and turn off water supply before servicing
• Pull the rack out; release the retaining tabs/clips that hold the tine to the rack
• Remove the damaged tine, align the new tine with the mounting points, and secure it in place
• Ensure the rack slides freely and spray arms spin without interference before running a cycle

This gasket creates a watertight seal between mating parts in the dishwasher's water system. Replacing a worn or damaged seal helps stop leaks during cycles and maintains proper wash performance. What it does:

• Seals the joint between components such as the sump, pump housing, or inlet assemblies
• Prevents water leakage under pressure during fill, wash, and drain
• Helps maintain spray pressure by reducing internal bypass
• Common symptoms include water on the floor or in the base pan, and a flattened, cracked, or brittle old gasket

• One gasket

• Disconnect power and turn off the water supply before servicing
• Access the gasket location and remove any retaining hardware
• Remove the old gasket and clean both sealing surfaces thoroughly
• Seat the new gasket evenly without twisting; tighten fasteners/clamps uniformly and run a test cycle to check for leaks

This thermistor holder secures the temperature sensor in place inside the dishwasher, ensuring accurate water temperature readings for proper wash and dry performance.

• Holds the thermistor securely in the sump/tub area
• Helps the control accurately monitor wash water temperature
• A loose or missing holder can cause temperature-related wash issues
• Common symptoms include temperature errors or poor cleaning/drying when the sensor isn't properly positioned

• Disconnect power and turn off water supply before servicing
• Access the sensor location from the tub/sump area; note original orientation
• Transfer the thermistor into the new holder and snap the holder into place
• Inspect the sensor wiring and seals while reassembling

This dishwasher sensor assembly contains the thermistor that monitors wash-water temperature and sends readings to the control. Replacing a faulty sensor restores accurate heating and cycle timing for consistent cleaning and to prevent temperature-related interruptions. What it does:

• Measures wash-water temperature via an NTC thermistor
• Sends a resistance signal to the control to manage heater operation and cycle timing
• Helps maintain target temperatures for proper cleaning performance
• Common failure symptoms include no heat or overheating, long/short cycles, temperature-related errors, or poor cleaning/drying

• Disconnect power at the breaker and shut off water before servicing
• Access the sump area from the bottom; you may need to pull the dishwasher forward for clearance
• Expect some residual water—protect the area with towels
• Seat the sensor fully in the sump opening, reconnect the harness, and run a test cycle to check for leaks and proper heating