Cleaning The Moisture Sensors; Maintenance Of Drain Hose - Bosch 300 Series Use And Care Manual / Installation Instructions

Rinse the heat exchanger and the cap on all sides with
7.
a jet of water to completely remove all of the lint and
fluff.
Remove all lint and fluff from the seals on the dryer
8.
and heat exchanger.
Allow the cap and the heat exchanger to dry fully.
9.
First insert the heat exchanger, then the cap.
10.
Turn back both locking levers.
11.
Close the maintenance flap until it locks into position.
12.
Look in the Troubleshooting table to reset the
13.
maintenance indication.
~ Troubleshooting; Page 32

Cleaning the moisture sensors

The dryer is equipped with a stainless-steel moisture
sensor. The moisture sensor measures how damp the
laundry is.
After long periods of usage the moisture sensor may
become covered by a fine layer of limescale or residues
of detergents and textile care products. Such residues
must be removed regularly as the sensor function and in
consequence the drying result may be impaired.
To clean the moisture sensors:
Open the door.
1.
The deposit on the sensors can easily be removed by
2.
wiping the sensors (the two bars next to the lint filter)
with a cloth and a little white vinegar.
NOTICE: Use white vinegar only!
Clean the moisture sensors once a month.

Maintenance of drain hose

If DR indicator lights up check the drain hose for kinks,
restrictions or blockage.
NOTICE: If DR indicator still lights up after the
maintenance, you should contact customer service or
your local dealer.
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