Kenmore Dishwasher White Film on Glasses: Causes and... | appliancefaults.com

Technical Background:

The dishwasher's Main Control Unit (MCU) controls the water inlet valve, wash motor, heating element, and dispenser solenoids. Proper voltage (120V AC) must be present at each component at the correct time during the cycle for optimal cleaning. The upper spray arm relies on sufficient water pressure to properly clean the top rack.

Symptoms:

The homeowner observes a white, filmy residue specifically on glasses located on the top rack of their Kenmore dishwasher after a wash cycle.

Possible Causes:

Hard water mineral deposits
Low rinse aid level
Improper detergent usage
Blocked upper spray arm or jets
Low water temperature during the final rinse
Failing check valve in the upper spray arm assembly

Solution:

1

Test your home's water hardness using a water hardness test kit available at most hardware stores or online.
2

Check the rinse aid dispenser and refill it with a quality rinse aid such as Finish Jet-Dry. Adjust the dosage setting to a higher level.
3

Make sure you are using the correct amount of dishwasher detergent recommended by the manufacturer. Avoid using too much detergent, which can leave residue.
4

Remove the upper spray arm and inspect it for any clogs or blockages. Use a small wire or toothpick to clean out any debris. Ensure the spray arm rotates freely.
5

Check the water temperature entering the dishwasher. It should be at least 120°F. Use a thermometer to measure the water temperature at the faucet closest to the dishwasher.
6

Inspect the check valve located in the upper spray arm assembly. If it is damaged or not functioning properly, replace it.
7

Run a dishwasher cleaning cycle using a product like Affresh or Dishwasher Magic to remove mineral buildup.

Safety Warning:

Always disconnect power to the dishwasher at the breaker panel before performing any repairs. Lock Out Tag Out (LOTO) procedures should be followed to prevent accidental re-energizing of the circuit. High voltage is present in the control panel.

Prevention:

Use a water softener if you have hard water. Regularly check and fill the rinse aid dispenser. Clean the spray arms periodically. Run a cleaning cycle monthly.

Expert Tip:

Many Kenmore dishwashers have a service mode. Simultaneously press and hold the 'Heated Dry' and 'Normal Wash' buttons for 3 seconds to enter service mode. Then, press 'Start' to initiate a diagnostic cycle. This can help pinpoint specific component failures.

Frequently Asked Questions

•How do I know if my water is too hard?

Use a water hardness test strip or contact your local water company for water quality reports. Readings above 7 grains per gallon are considered hard.

•Where is the rinse aid dispenser located?

The rinse aid dispenser is typically located on the inside of the dishwasher door, near the detergent dispenser.

•What is the correct amount of detergent to use?

Refer to the detergent packaging for dosage recommendations. Generally, use about 1 tablespoon for soft water and 2 tablespoons for hard water.

Kenmore Dishwasher White Film on Glasses: Causes and Solutions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I know if my water is too hard?

•Where is the rinse aid dispenser located?

•What is the correct amount of detergent to use?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: