Fisher & Paykel DishDrawer DD605 Service Manual page 41

Customers Complaint - Coffee/Tea Stains left in Cups
Cause of problem (1).
How to resolve the problem.
Cause of problem (2).
How to resolve the problem.
Customers Complaint - Dishes have blotchy marks on them that look like water
Cause of problem.
How to resolve the problem.
Customers Complaint - Glasses & Cutlery have a Cloudy White film on them and/or
Cause of problem.
How to resolve the problem.
Not enough detergent is being used. To remove these stains requires a stronger
concentration of detergent in the water.
More detergent is also required in hard water areas, as minerals in the hard water
reduce the effectiveness of the detergent.
Fill the main-wash detergent cup to the top and for best results also fill the pre-wash
detergent cup. Run on normal or heavy cycles, not Eco.
The product is being over loaded, which is preventing water reaching the cups on
the upper cup racks.
Advise the customer of correct loading.
stain marks, not food
Not enough rinse aid being used. The water is not soft enough during the final
rinse and therefore hard water droplets containing impurities are drying on the
dishes instead of running off during the dry cycle.
Confirm that the customer is using rinse aid.
The rinse aid may need to be turned up to a higher setting (4 or 5 lights), and for
optimum dry performance, run the DishDrawer™ on normal or heavy cycles, not
Eco.
Check that the rinse aid dispenser is dispensing correctly in diagnostics.
Plates have a White Chalky film on them
Hard water and not enough detergent being used. Minerals from the water are
building up on the dishes or the water softener is not set to the correct water
hardness level, or is faulty.
Once this film forms on the dishes it cannot be removed by normal running in the
dishwasher. The dishes will need to be cleaned by soaking them in an acidic
solution (such as white vinegar and water).
Where a Water Softener is not fitted:
To prevent the build up re-occurring, the customer will need to fill both the main-
wash and pre-wash detergent cups to the top with a power detergent, and we
would recommend running on normal cycles, not Eco.
In problem areas with very hard water, the customer may need to use a detergent
additive designed for use in hard water areas, or fit a water softener to the
incoming water supply.
Where a Water Softener is fitted:
Set the water softener for the correct local water supply hardness. Check that the
water softener is functioning correctly in diagnostics.
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