Karcher HDS 9-18-4M - Manual (Page 36)

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 Leave device running with open detergent
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.
– System care bottle empty.
 Replace the system care bottle.
– 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 de-
vice checked by customer service.
– 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 device
must be checked by customer service.
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 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