Bosch SPS40C12GB Repair Instructions page 19

Fault diagnosis
Fault
2016-03-02 / DIS 840_58300000176874_ara_en_c
Possible cause
Combined detergents with rinse aid / "x-
in-1" tabs
No rinse aid in the dispenser (LED lights
up) or the dosage is set too low
Unsuitable programme or option selected
Tableware was removed too early
Plastic utensils
Use of rinse aid with poor drying properties ► Advise customer:
Copyright by BSH Hausgeräte GmbH
Troubleshooting
► If adequate drying results cannot be achieved with combined detergents ("5-in-1",
"7-in-1", etc.), we recommend using separate branded products. Rinse aid should
be used in addition to the tabs.
► Advise customer:
Appliances with zeolite drying systems get markedly better results with separate
products than with combined detergents because the final rinse is at a lower
temperature.
► Advise customer:
Activate the optional special drying (see IM, chapter Operating the appliance)
► Refill rinse aid.
► Activate the rinse aid dispenser or increase the dosage.
► Select a programme with a drying phase (short programmes such as "Quick Wash"
have only a brief drying phase or none at all).
- If the "Vario Speed" function is used in appliances with a zeolite drying system
this will be deactivated and drying will be carried out conventionally (via heat
exchanger). This is less effective and the tableware is considerably hotter at the
end of the programme. Compared to programmes that use the zeolite drying
system, this releases a great deal more steam when the door is opened.
- If the "Vario Speed" function is used in appliances without a zeolite drying
system, the drying phase will be shortened considerably and the temperature of the
final rinse will be increased. It is unavoidable that this slightly reduces the drying
performance.
► Advise customer:
Wait until the end of the programme to permit adequate drying. Recommended:
briefly open the door at the end of the programme to allow steam to escape.
Then close the door; remove the tableware about 30 minutes after the end of the
programme.
- Because plastic dishes have a low heat storage capacity and a hydrophobic (water-
repellent) surface, some drops of water may still be present after the drying phase.
► Some appliances offer a way of improving drying performance by activating an
optional special drying mode (see instruction manual).
► Advise customer:
Increase the dosage of rinse aid.
There are eco rinse aids on the market whose drying properties are less good than
that of ordinary rinse aids.
Switch to conventional branded products
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