BR 400
18
English
Further malfunctions BR 400
Insufficient suction
power or unsatisfactory
vacuuming result on
the floor
Dirty water tank incorrectly
mounted on the unit
Check and mount correctly
Water level in the dirty water
tank too high
Empty dirty water tank
Excess-current
circuit-breaker has
tripped
Excessive friction of the
brush rollers
Reduce brush pressure
Dirty water runs over
the unit
Water level in the dirty water
tank too high, e. g float tube
did not move
Empty tank. Clean float tube in
the dirty water tank or ensure
that it moves freely
Line-side automatic
circuit breaker trips
when unit is switched
on
Too many current consumers
switched on in the electric
circuit
Switch off other consumers or
use another electric circuit
Inadequate mains fuse
Ensure that the mains fuse is
adequate (16 A slow-blowing)
or use starting current limiter
The unit is running
noisily (vibrating)
On completion of work,
pressure has not been
removed from the brush
rollers (vertical handle,
running gear locked in
position)
Place brush rollers in hot water
(approx. 80 °C) for
approximately 15 min.
Have a specialist carry out all checks and work on the electrical parts. Please call Kärcher Customer Service
if malfunctions continue.