Troubleshooting - Kärcher HDS 7/9-4 M Manual Del Usuario

Maintenance Works
Clean the sieve in the water connection
 Take out sieve.
 Clean sieve in water and reinstall.
Cleaning the fine filter
 Unpressurize the appliance.
 Unscrew lid with filter.
 Clean the filter with clean water or com-
pressed air.
 Reinstall in reverse sequence.
Clean sieve in the water shortage safe
guard
 Loosen covering nut and take off hose.
 Take out sieve.
Note: If necessary turn in screw M8 appr. 5
mm inwards and therewith pull out sieve.
 Clean sieve in water.
 Push sieve inwards.
 Put on hose.
 Tighten covering nut firmly.
Clean filter at the detergent suck hose
 Take out detergent suck supports.
 Clean filter in water and reinstall.
Oil change.
 Ready a catch bin for appr. 1 Liter oil.
 loosen release screw.
Dispose of old oil ecologically or turn in at
a gathering point.
 Tighten release screw.
 Fill oil slowly up to the MAX marking.
Note: Air pockets must be able to leak out.
For oil type refer to technical specifica-
tions.

Troubleshooting

Danger
Risk of injury by inadvertent startup of ap-
pliance and electrical shock.
First pull out the plug from the mains before
carrying out any tasks on the machine.
32
Indicator lamp pump
1x blinking
Lack of oil
–
 Replenish oil.
2x blinking
Leak in the high pressure system
–
 Check high pressure system and con-
nections for tightness.
3x blinking
Water shortage
–
 Check water supply, check connec-
tions.
4x blinking
Obstructed reed switch in the water
–
shortage safe guard.
 Check water shortage safe guard.
Indicator lamp rotation direction is
Figure 10
 Exchange the poles at the appliance plug.
Indicator lamp "Ready for use"
No line voltage, see "Appliance is not
–
running".
Engine indicator lamp
1x blinking
Contactor error
–
 Set the appliance switch to "0/OFF".
 Turn on the appliance.
Error occurs repeatedly.
–
 Inform Customer Service
2x blinking
Engine overload/overheat
–
 Set the appliance switch to "0/OFF".
 Allow device to cool down.
 Turn on the appliance.
Error occurs repeatedly.
–
 Inform Customer Service
3x blinking
Fault in the voltage supply.
–
 Check main connections and mains
fuse.
– 10
EN
blinking
turns off