Frigidaire Dishwasher Water Marks on Smudge Proof... | appliancefaults.com

Technical Background:

The dishwasher's Main Control Unit (MCU) manages the water inlet valve, detergent dispenser, rinse aid dispenser, and heating element. Voltage paths control fill levels, water temperature and cycle duration. Proper functioning of these components is crucial for effective cleaning and spot-free drying. A faulty rinse aid dispenser or inadequate water temperature can lead to water marks.

Symptoms:

Homeowners are observing persistent water marks and spots on their smudge-proof stainless steel dishes after running their Frigidaire dishwasher. These marks are unsightly and difficult to remove, even with hand washing.

Possible Causes:

Hard water minerals
Insufficient rinse aid
Low water temperature
Improper loading
Faulty dispenser
Wash cycle selection

Solution:

1

Test water hardness using a test strip. Install a water softener if hardness exceeds 7 grains per gallon.
2

Fill the rinse aid dispenser completely with a quality rinse aid product.
3

Verify the water heater is set to at least 120°F (49°C). Check with a thermometer under the kitchen faucet.
4

Adjust loading technique. Ensure dishes aren't blocking spray arms.
5

Inspect the rinse aid dispenser for clogs or damage. Replace if necessary.
6

Select a more powerful wash cycle if lightly soiled dishes persist.
7

Clean the spray arms. Clogged spray arms won't deliver proper water pressure.

Safety Warning:

Always disconnect power to the dishwasher at the breaker panel before performing any repairs. Lock Out/Tag Out (LOTO) procedures must be followed. Be aware of potentially high voltage components (120V AC) within the dishwasher's control panel. Only qualified technicians should perform electrical repairs.

Prevention:

Regularly check and refill the rinse aid dispenser. Clean the dishwasher filter monthly. Run a dishwasher cleaner cycle every 1-3 months to remove mineral buildup. Use appropriate amount of detergent.

Expert Tip:

To access the diagnostic mode on some Frigidaire dishwashers, press and hold the 'Start/Cancel' button for 5 seconds, then press 'High Temp Wash', 'Heated Dry', 'High Temp Wash', 'Heated Dry'. This will cycle through error codes and allow you to test individual components.

Frequently Asked Questions

•How do I test the water inlet valve?

Disconnect power. Remove the kick plate. Use a multimeter to test for continuity across the valve's solenoid. If no continuity, the valve is likely faulty.

•What type of rinse aid is best for hard water?

Use a high-performance rinse aid specifically formulated for hard water conditions. These often contain chelating agents to bind minerals.

•How do I clean the spray arms?

Remove the spray arms. Use a small wire or toothpick to clear any clogs in the spray arm nozzles. Rinse thoroughly under running water before reinstalling.

Frigidaire Dishwasher Water Marks on Smudge Proof Stainless Steel: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I test the water inlet valve?

•What type of rinse aid is best for hard water?

•How do I clean the spray arms?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: