Dishwasher Not Cleaning Dishes Properly
Dishes come out of the dishwasher with food residue, spots, or film.
Common Symptoms
- 1Food particles remaining on dishes
- 2White film or spots on glassware
- 3Cloudy glasses
- 4Greasy residue on dishes
- 5Dishes not fully dry
Possible Causes
Hard water mineral deposits
Most CommonPhoenix Metro has extremely hard water (300+ PPM). Mineral buildup affects spray arms, heating elements, and leaves residue on dishes.
Clogged spray arms
Most CommonFood particles and mineral deposits block spray arm holes, reducing water pressure.
Dirty filter
Most CommonA clogged filter recirculates dirty water onto dishes.
Insufficient water temperature
PossibleWater not reaching 120 degrees F does not dissolve detergent or clean effectively.
Faulty heating element
PossibleThe element that heats water during wash has failed.
Wrong detergent amount
PossibleToo much or too little detergent affects cleaning performance.
DIY Troubleshooting Steps
Before starting: Always ensure your safety first. Unplug the appliance when working near electrical components. For gas appliances, turn off the gas supply if you smell gas.
- 1
Clean the filter
Remove and clean the filter at the bottom of the dishwasher. Rinse under running water and use a soft brush to remove debris.
- 2
Inspect and clean spray arms
Remove spray arms and clear each hole with a toothpick. Soak in vinegar to dissolve mineral deposits. Rinse thoroughly.
- 3
Run a cleaning cycle
Run an empty cycle with dishwasher cleaner or 2 cups of white vinegar to remove mineral buildup.
- 4
Check water temperature
Run hot water at the kitchen sink until it is hot before starting the dishwasher. This ensures hot water reaches the machine immediately.
- 5
Use rinse aid
Fill the rinse aid dispenser. In Arizona's hard water, rinse aid is essential for spot-free dishes.
- 6
Load dishes properly
Ensure dishes do not block spray arms and face inward for proper cleaning. Do not overcrowd.
When to Call a Professional
Contact a professional technician if any of the following apply:
- !Cleaning does not improve after DIY steps
- !Heating element may be faulty
- !Wash motor sounds weak or unusual
- !Error codes appear on display
- !Water inlet issues suspected
Prevention Tips
- Run dishwasher cleaner monthly in Arizona's hard water
- Clean filter weekly if used daily
- Always use rinse aid
- Pre-rinse heavily soiled dishes
- Use hot water before starting cycle
- Schedule annual professional descaling