Kärcher WU 90/72 Handbuch Seite 25

Fault
Display does not
turn on.
Display completely
or partially dark.
The irrigation does
not take place in
spite of the pro-
gramming.
Troubleshooting
Cause
Battery depleted.
Battery contacts oxi-
dized.
Ambient temperatures
too high.
Water tap is closed.
Battery depleted.
Battery contacts oxi-
dized.
Filter gaskets blocked.
Remedy
Insert a new 9V
battery (type
6LR61 / Alkaline).
Clean the con-
tacts.
Protect the irriga-
tion device from
high tempera-
tures.
Open tap.
Insert a new 9V
battery (type
6LR61 / Alkaline).
Clean the con-
tacts.
Clean the filter
gasket.
English
25