Karcher HDS 10-20 -4M CLASSIC EU-I - Manual (Page 35)

– 12
– Detergent tank 2 is empty.
 Refill detergent.
– No power
 Check power connection/conduit.
– Air within the system
Vent pump:

Set dosing value for detergent to "0".
 With open hand spray gun turn device
on and off multiple times with the device
switch.
 Open and close the pressure/quantity
regulation at the pump unit with the
hand spray gun open.
Note: By dismantling the high pressure
hose from the high pressure connection the
venting process is accelerated.

If detergent tank is empty, refill.
 Check connections and conduits.
– Pressure is set to MIN
 Set pressure to MAX.
– Sieve in the water connection is dirty
 Clean sieve.
 Clean the fine filter; replace it, if necessary.
– Amount of water supply is too low.
 Check water supply level (refer to tech-
nical data).
– Pump leaky
Note: 3 drops/minute are allowed.

With stronger leak, have device
checked by customer service.
– 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 sup-
ply, 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 container is empty.
 Refill system care.
– 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.
Indicator lamp detergent 2 is
illuminated (HDS 12/18 only)
Appliance is not running
Device is not building up pressure
Device leaks, water drips from the
bottom of the device
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
35 EN