Kärcher BPE 4200/50 Manual De Instrucciones página 22

Fault
Pump stops, the dis-
play shows "Err2",
two pairs of lights
blink, alternating
sides.
Pump stops intermit-
tently and turns back
on; after several
switch procedures,
the display shows
"Err2"; two lights
blink alternately
Pump transports is
reducing or trans-
ported quantity is too
low
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Cause
Failure in the pressure
line, flow too small, the
pump frequently
switches on and off as
a result of reduced wa-
ter extraction.
Failure in the pressure
line, the pump fre-
quently switches on
and off as a result of
leakage.
Pressure loss due to
missing or defective
backflow valve
Pressure reduction by
leakages in the system
Suction pipe blocked
Pre-filter is dirty
Suction side is leaky
The quantity transport-
ed by the pump de-
pends on the transport
height and the con-
nected periphery
Remedy
If reduced water extraction is required,
the switching frequency can be reduced
by increasing the overpump time, and
thus the occurrence of failure "Err2" can
be avoided.
Press the "SET" button to restart.
Check and correct the pressure line for
leakages (dripping water tap).
Press the "SET" button to restart.
Ensure that the backflow valve is correct-
ly inserted into the fill neck. Observe the
care instructions.
Check all connection locations on the
suction and pressure sides as well as all
the lids for tightness.
Install a pressure compensating hose on
the pressure side (see special accesso-
ries). As an alternative, a pressure com-
pensating container can be installed as a
pressure tank.
Pull out the mains plug and clean the suc-
tion pipe
Remove the prefilter and the backflow
valve and clean them under flowing wa-
ter, rinse any dirt residues from the fill
neck by opening the discharge opening.
Check the entire suction side for leaks
Keep max. flow height, see technical da-
ta. If necessary, select a different hose di-
ameter or hose length.