AEG FBB73937ZM, User Manual, Page: 11 / 28

The saved settings remain valid until you
change them again.
How to set the programme selection
mode
The appliance is in programme selection
mode when the programme indicator
is on and the display shows the programme
duration.
After activation, the appliance is in
programme selection mode by default. If not,
set the programme selection mode the
following way:
Press and hold simultaneously Delay and
Option until the appliance is in programme
selection mode.
How to enter user mode
Make sure the appliance is in programme
selection mode.
To enter user mode, press and hold
simultaneously Delay and Option until the
indicators
, and
flash and the display is blank.
7.2 The water softener
The water softener removes minerals from
the water supply, which would have a
negative effect on the washing results and on
the appliance.
The higher the content of these minerals, the
harder your water is. Water hardness is
measured in equivalent scales.
The water softener should be adjusted
according to the hardness of the water in your
area. Your local water authority can advise
you on the hardness of the water in your
area. Set the right level of the water softener
to assure good washing results.
Water hardness
German de‐
grees (°dH)
French de‐
grees (°fH)
mmol/l mg/l (ppm) Clarke de‐
grees
Water softener
level
47 - 50 84 - 90 8.4 - 9.0 835 - 904 58 - 63 10
43 - 46 76 - 83 7.6 - 8.3 755 - 834 53 - 57 9
37 - 42 65 - 75 6.5 - 7.5 645 - 754 46 - 52 8
29 - 36 51 - 64 5.1 - 6.4 505 - 644 36 - 45 7
23 - 28 40 - 50 4.0 - 5.0 395 - 504 28 - 35 6
19 - 22 33 - 39 3.3 - 3.9 325 - 394 23 - 27
5
1)
15 - 18 26 - 32 2.6 - 3.2 255 - 324 18 - 22 4
11 - 14 19 - 25 1.9 - 2.5 185 - 254 13 - 17 3
4 - 10 7 - 18 0.7 - 1.8 70 - 184 5 - 12 2
<4 <7 <0.7 <70 < 5
1
2)
1)
Factory setting.
2)
Do not use salt at this level.
Regardless of the type of detergent used,
set the proper water hardness level to
keep the salt refill indicator active.
Multi-tabs containing salt are not effective
enough to soften hard water.
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