Technical data

8.5.2008 Rev. 2.2
Installation
21
5.2.6 Setting the descale indicator
Scale deposits are left in the heating system when the appliance is used. The amount of
scaling depends on the hardness of the water being used. The appliance is fitted with a
descale light (5.2), which lights up when the heating system has processed a certain quan-
tity of water and has to be descaled. The appliance continues to work so that it can be des-
caled when it is not being used.
If you are unaware of the hardness of your mains water, you are advised to contact your
local water supply company.
Set the appliance to your water hardness as follows, using the table above as a guideline.
• Switch off the appliance (1).
• Hold in the programme button (5.4) and switch the appliance back on.
• Press the programme button (5.4) until the right indicator light (5.2/5.3) lights up.
(E.g. only the red lamp should light up for hard water. The water in the area is hard,
over 12 ºD ).
• Wait for 6 seconds. The water hardness has now been set.
5.2.7 Resetting the descale indicator light
After the descaling procedure (see chapter ‘Descaling’) hold in the programme button for
6 seconds. The descaling indicator light will now go out.
Water
hardness