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Fisher & Paykel Product Help

Poor Wash Performance Information


Problem Image Possible Cause What to Do
Rust Marks on Cutlery Rust Marks on Cutlery.PNG
  • Critic acid or salty foods like ketchup or mustard left on the utensils too long before washing.
  • Water softener salt spilt when filling water softener (some models/markets only)
  • Low grade stainless steel being less resistant to corrosion in damp dishwasher environment.
  • Steel and silver items loaded together and reacting with each other.
  • Avoid prolonged contact with acidic or salty foods. Pre rinse acid or salty residue off before washing.
  • Ensure all spilt salt is cleaned up before a wash is started. 
  • Use a high grade stainless steel in the dishwasher, or ensure you remove these items right after the dry period has finished.
  • Separate all steel and silver in the cutlery basket.
  • Ensure the rinse aid is full and correctly set.

Iridescence on Pots and Cutlery

(purple, blue, green or yellow tinge)

Iridescence on Pots abd Cutlery.PNG
  • Caused by vegetables like potatoes and cauliflower.
  • Can be caused by impurities in the water supply like iron or manganese oxide.
  • Is completely harmless and is easily removed using a cleaner.
  • Limited on what can be done on incoming water supply except adding a water filter to the incoming supply.
Tarnishing on Silver Cutlery Tarnishing on Silver Cutlery.PNG
  • Caused by a formation of silver sulphide due to sulpher containing food residues like mustard, eggs and mayonnaise.
  • Formation of silver oxide due to bleaching agents used.  (oxidation)
  • Avoid prolong contact with sulphur based foods and try using a pre rinse cycle if dishes being left for some time in the DW.
  • Try using a multi benefit detergent tablet with silver protection ingredient e.g.Finish Quantum tablets.
  • Silver items should really be washed by hand, not in a DW.
Discoloration on Aluminium Discoluration on aluminium.PNG
  • Aluminum will change colour due to the DW detergent being used.
  • Caused by the aluminum being unsealed, and reacting with the detergents.
  • If aesthetic colour change is not acceptable, suggestion is to wash all aluminium by hand washing.
  • Follow the pot manufacturers recommendation for washing.
Colour Fading from Plates Colour fading from plates.PNG
  • The reason for enamel damage and colour fading is frequent dishwashing.
  • Some glazes have limited durability to detergents used in DW, and limited numbers of cycles they can be washed before the colours start to fade.
  • If aesthetic colour change is unacceptable, suggestion is to wash these dishes by hand.
  • Or try using a finisher protector which helps eliminate colour fade and and glass corrosion.
Colour Fading from Glasses Colour fading from glasses #1.PNG
  • Patterned glass unwashed
  • If aesthetic colour change is unacceptable, suggestion is to wash these types of glasses by hand.
Colour fading from glasses #2.PNG
  • Same patterned glass after 50 cycles washed in a dishwasher.
Glasses becoming Dull Glasses becoming dull.PNG
  • Usually caused by hard water (lime scale)
  • Mineral deposits in the water.
  • The water softener in your DW may not be working or incorrectly set for the incoming water hardness.  (some models/markets only)
  • In most cases this can be removed by soaking and cleaning in household vinegar.
  • If using a powered detergent, try changing to a muti-tablet that has additives included to help in hard water situations.
  • Some multi tablets can work in hard water up to 375 ppm.  
  • Check the water softener (if fitted) is set on the correct harness level for your incoming water supply.
  • Ensure the water softener has been filled with DW salt, if not refill and continue to top up with the correct salt as required.
  • Ensure the rinse aid is full and correctly set in the dispenser.
  • Try using more detergent.
Glasses have Scratches on them Glasses have scratches on them.PNG
  • This can be caused by incoming water quality with the  water being very soft.
  • Water softener (if fitted) is incorrectly set.
  • The composition of the detergent formula can also scratch glasses.
  • Use a short or lower wash temperature cycle if possible.
  • Or use the glass wash cycle if your dishwasher has one.
  • Check the water softener (if fitted) is correctly set for the incoming water hardness.
  • Once scratched this is irreversible.
Smears & Streaks Smears & Streaks.PNG
  • This can be caused by poor loading of dishes.
  • Puddles of water can form due to loading and some shapes of dishes.
  • Detergent tablet still dissolving in the last rinse due to incorrect wash cycle chosen. ( too short or too cool)
  • Over dosing of detergents.
  • Rinse aid not being used, or has run out.
  • Ensure the dishwasher is correctly loaded and all dishes can get water penetration which will help wash and rinse the dishes.
  • Ensure the dishes are stacked correctly and can not tip and retain water.
  • Select a cycle that suits the soil level and type of  detergent being used, using a short wash cycle may not give a  detergent tablet enough time to fully dissolve.
Water Marks Still Left on Glasses Water marks still left on glasses.PNG
  • Rinse aid has run out
  • Fill rinse aid dispenser.
  • If rinse aid is visible and there is a level indicated, check the rinse aid setting is correct.
Tub has Turned Pink No Image
  • Usually caused by washing dishes with a lot of tomato food soil left on the plates.
  • Pre rinse dishes by hand before adding to the tub, this will prevent the staining.
  • If already stained, try using a  dishwasher cleaner which should help remove the staining.
Water is Retaining on the Top Tub Flange Water is retaining on the top tub flange.PNG
  • This can be normal, but amount can vary.
  • Using a low temperature wash or using the ECO cycle option.
  • Use a warmer wash temperature and see if the water level reduces.
  • Using ECO cycle decreases water temps so the residual heat is reduced, causing more condensation to form, this then will form around the top tub edge.
  • Some water on this edge is quite normal.
Dishes Not Dry No Image
  • Incorrect wash cycle used for solid level.
  • The rinse aid is empty.
  • Incorrect loading or over loaded.
  • ECO cycle selected
  • Ensure that the correct wash cycle is selected based on solid level.
  • Check the rinse aid dispenser is full and correctly set to the right level.
  • Ensure you load the dishes correctly that they receive good wash penetration.
  • Lower temperature wash cycles like fast/delicate have very low rinse temperatures, meaning the dishes will appear wet after the cycle has finished.
Tea Stains Tea Stains.PNG
  • Incorrectly stacked dishwasher
  • Short or too low wash temperature cycle selected.
  • Not enough detergent being used.
  • Blocked spray arm
  • Jammed spray arm.
  • Ensure the dishes are stacked that they receive good water penetration during the wash.
  • Ensure you select a wash cycle based on soiled level, usually a normal or heavy wash have higher wash temperatures.
  • Try increasing the detergent level.
  • Check the spray arms were not jammed by something falling through the base rack and stopping the spray arm from rotating.
Heavily Stained Tub Heavily Stained Tub #2.PNG
  • In some cases tubs can be stained due to the incoming water quality.
  • This tub is an example and has completed 5000 high heat cycles in a lab.
  • The tub has turned brown due to the high iron content in the incoming water.
  • Use a DW descaler type cleaner, this one is available to purchase through F&P.
Heavily Stained Tub.PNG
  • Fill the dispenser up with the Dishwasher cleaner as shown.
  • Fill the dispenser up with the Dishwasher descaler cleaner.
  • Run through on a normal wash cycle.
  • Ensure to follow manufacturers instruction on the box.
Result Result.PNG  
  • The tub after one clean, which has removed most of the heavy staining.
  • Some results may vary.
Lightly Stained Tub



  • In some cases tubs can be stained due to the incoming water quality.
  • Or due to certain foods staining the plastic.
  • Try running an empty tub on a heavy cycle with the maximum level of detergent to see if this can remove the staining.
  • If the staining does not disappear you could use a recognised brand of dishwasher cleaner.
  • Follow the manufacturers instructions on the bottle.



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