Kärcher HDS 7/9-4 M/MX Mode D'emploi page 36

Indicator lamp system care is
illuminated
Note: Burner can operate 5 more hours.
– System care bottle empty.
 Replace the system care bottle.
Indicator lamp system care is
Note: Burner operation no longer possible.
– System care bottle empty.
 Replace the system care bottle.
Indicator lamp detergent 1 is
illuminated (HDS 12/18 only)
– Detergent tank 1 is empty.
 Refill detergent.
Indicator lamp detergent 2 is
illuminated (HDS 12/18 only)
– Detergent tank 2 is empty.
 Refill detergent.
Appliance is not running
– No power
 Check power connection/conduit.
Device is not building up pressure
– 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 neces-
sary.
36
blinking
– Amount of water supply is too low.
 Check water supply level (refer to tech-
nical data).
Device leaks, water drips from the
bottom of the device
– Pump leaky
Note: 3 drops/minute are allowed.
 With stronger leak, have device
checked by customer service.
Device turns on and off while hand
spray gun is closed
– Leak in the high pressure system
 Check high pressure system and con-
nections for tightness.
Device is not sucking in detergent
 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.
Burner does not start
– System care bottle empty.
 Replace the system care bottle.
– Fuel tank empty.
 Refill fuel.
– Water shortage
 Check water supply, check connections.
 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 glass,
have device checked by customer ser-
vice.
– 12
EN