Fisher & Paykel DishDrawer DD24D Series 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
Cause of problem.
How to resolve the
problem.
Customers Complaint - Glasses & cutlery have a cloudy white film
on them and/or plates have a white chalky film on them
Cause of problem.
How to resolve the
problem.
Not enough detergent is being used.
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. There
are also detergents available with a built in water softening agent
which will work up to moderate hardness levels.
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.
Use a detergent with a water softening agent.
The product is being over loaded, which is preventing water
reaching the cups on the upper cup racks.
Advise the customer of correct loading.
look like water 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.
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 in the product:
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. There are detergents available to be used with
hard water that have a softening agent built in. These powders will
work up to moderately hard water.
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 household 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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599735A
To remove these stains