User guide
– 12
– Leak in the high pressure system
Check high pressure system and con-
nections for tightness.
Leave device running with open deter-
gent dosage valve and closed water
supply, until the swimmer tank is
sucked empty and the pressure falls to
"0".
Open the water supply again.
If the pump still is not sucking in any deter-
gent, it could be because of the following
reasons:
– Filter in the detergent suck hose dirty
Clean filter.
– Backflow valve stuck
Remove the detergent hose and loosen
the backflow valve using a blunt object.
– Fuel tank empty.
Refill fuel.
– Water shortage
Check water supply, check connec-
tions.
Clean sieve in the water shortage safe
guard.
– Fuel filter dirty
Change fuel filter.
– No ignition spark
If device is in use and no ignition spark
can be seen through the viewing glas,
have device checked by customer ser-
vice.
– Working pressure/flow rate to high
Reduce working pressure/flow quantity
at the pressure/volume regulator in the
pump unit.
– Sooty heating spiral
Have device de-sooted by customer
service.
If malfunction can not be fixed, the de-
vice must be checked by customer ser-
vice.
The warranty terms published by our com-
petent sales company are applicable in
each country. We will repair potential fail-
ures of the appliance within the warranty
period free of charge, provided that such
failure is caused by faulty material or de-
fects in fabrication.
Note: When connecting the appliance to a
chimney or if the device cannot be ac-
cessed visually, we recommend the instal-
lation of a flame monitor (option).
– Only use accessories and spare parts
which have been approved by the man-
ufacturer. The exclusive use of original
accessories and original spare parts
ensures that the appliance can be oper-
ated safely and trouble free.
– At the end of the operating instructions
you will find a selected list of spare parts
that are often required.
– For additional information about spare
parts, please go to the Service section
at www.kaercher.com.
Device turns on and off while hand
spray gun is closed
Device is not sucking in detergent
Burner does not start
Set temperature is not achieved
while using hot water
Warranty
Accessories and Spare Parts
36 EN