Troubleshooting - Kärcher HDC 20/8 Manual

Maintenance contract
You can enter into a maintenance contract
with the concerned Kaercher Sales Office
for the machine.
Frost protection
The machine should be stored in frost-free
rooms. In case there is frosting risk, for e.g.
if the machine is installed in open areas,
then the machine must first be emptied and
flushed using an anti-freezing agent.
Drain water
 Screw off water supply hose and high
pressure hose.
 Operate device for max. 1 minute until
the pump and conduits are empty.
Flush device with anti-freeze agent
Note: Observe handling instructions of the
anti-freeze agent manufacturer.
 Fill in normal anti-frost agents in the
swimmer tank right until the top.
 Place the collection trough under the
high pressure exit.
 Switch on the appliance and let it run
until the safety mechanism against lack
of water in swimmer tank gets activated
and the machine is switched off.
A certain corrosion protection is achieved
with this as well.

Troubleshooting

DANGER
Risk of injury! The main switch is to be
switched off while carrying out any repairs
or maintenance jobs.
Error number display of the control
Error Error description
number
01 Water shortage
02 Winding protection contact
03 Water temperature is too high
04 Leakage switch-off 1 (30 min-
utes of continuous operation).
05 Leakage switch-off 2 (minor
leakage)
06 Pressure sensor does not trans-
mit signal
07 Temperature sensor does not
transmit signal
08 ON switch continuously activat-
ed
– When an error is triggered, the opera-
tion readiness of the appliance is
switched off and the pump is shut down.
The control lamp "collection error" will
blink in the pulse of the reported error
number; or if the water level is low or the
winding protection contact is triggered
on the engine, the respective message
lamp will illuminate. In addition to this,
the error number on the 7-segment dis-
play of the control unit will be displayed.
– If one of the above errors occurs, the
appliance can be restarted after the er-
ror has been corrected by activating the
release switch.
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EN 25