Troubleshooting Guide - Kärcher HD 9/20-4 S Manual

4. Unscrew the 2 screws.
Illustration P
Hose stopper
1
High-pressure hose
2
Screw
3
5. Remove the hose stopper from the high-pressure
hose.
6. Pull out the locking hook.
Illustration Q
Hose connection
1
Washers
2
High-pressure hose.
3
Locking hook
4
7. Pull the high-pressure hose out of the hose connec-
tion.
8. Insert the new high-pressure hose through the hose
guide rollers and insert it into the hose connection.
Observe the direction of rotation of the hose reel.
Illustration R
Hose guide roller
1
9. Insert the locking hook into the hose connection.
10. Check that all washers are behind the locking hook.
11. Fit the hose stopper to the other end of the high-
pressure hose. Distance to the end of the hose
about 1 m (to the high-pressure gun).
12. Connect the device to the water supply and power
supply, put it into operation and check the connec-
tion for leaks.
13. Tension the hose and keep it tensioned. Pull out the
Allen key while the hose is taut.
14. Unlock the hose reel by pulling on the high-pressure
hose and let the high-pressure hose slowly roll up.
Control the reeling speed by holding the hose.
15. Replace the cover.
Replacing the high-pressure hose on a manual
hose reel
1. Completely unroll the high-pressure hose from the
hose reel.
Illustration S
2. Lever out the fastening clip for the high-pressure
hose and pull out the hose.
3. Push the hose nipple all the way into the node piece
on the hose reel and secure it with the fastening clip.

Troubleshooting guide

DANGER
Inadvertently starting up device, touching live com-
ponents
Risk of injury, electric shock
Switch off the device before performing any work on the
device.
Remove the mains plug.
Have all checks and work on electrical parts performed
by a qualified electrician.
In case of any malfunctions not mentioned in this chap-
ter, contact the authorised Customer Service.
Indicator light
Note
This function is only available with HD 10/25... and
HD 13/18...
22
The indicator light indicates operating states (green)
and malfunctions (red).
Resetting the indicator light
1. Set the power switch to "0".
2. Wait for a few seconds.
3. Set the trigger to "I".
Operating mode display
Continuous green light
The device is ready for operation.
Flashes green once
Standby mode has expired after 30 minutes of continu-
ous operation and the device is switched off (safety if
the high-pressure hose has burst).
To restart the standby time:
1. Set the power switch to "0".
2. Wait for a few seconds.
3. Set the trigger to "I".
Flashes red once
The high-pressure side is leaking.
1. Check the high-pressure hose, hose connections
and high-pressure gun for leaks.
Flashes red twice
The motor is too hot.
1. Set the power switch to "0".
2. Allow the device to cool down.
3. Set the trigger to "I".
Note
If this fault occurs repeatedly, check the nozzle, water
supply temperature, ambient temperature and mains
voltage.
Flashes red three times
A fault has occurred in the voltage supply.
1. Check the power supply and the mains power sup-
ply circuit breaker.
Flashes red four times
The power consumption is too high.
1. Consult the Customer Service.
Faults that are not displayed
The device cannot be started.
1. When the indicator light flashes green:
a Set the power switch to "0".
b Set the trigger to "I".
2. Allow the motor to cool down:
a Set the power switch to "0".
b Allow the device to cool down.
c Set the trigger to "I".
3. Check the mains cable for damage.
4. Check the mains voltage.
5. Contact Customer Service in the case of electrical
faults.
Device does not reach required pressure
1. Check that the high-pressure nozzle is the right size
(see chapter "Technical data").
2. Clean or replace the nozzle.
3. Vent the device (see chapter "Venting the water con-
nection/device.").
4. Clean the fine filter, replace if necessary (see chap-
ter "Care and Maintenance/Weekly").
5. Check the water supply volume (compare with the
required volume specified in the "Technical data"
chapter).
6. Contact Customer Service if necessary.
English
Fault display