Troubleshooting - Kärcher HDC 40/8 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.
26

Troubleshooting

DANGER
Risk of injury! The main switch is to be
switched off with all repair work.
A Error number
B Number of currently present errors
Error Error description
number
01 Control voltage is miss-
ing
02 Display, no communi-
cation
10 Motor protection switch
high pressure pump 1
11 Motor protection switch
high pressure pump 2
12 Motor protection switch
high pressure pump 3
13 Motor protection switch
high pressure pump 4
18 Winding protection
contact high pressure
pump 1
19 Winding protection
contact high pressure
pump 2
20 Winding protection
contact high pressure
pump 3
21 Winding protection
contact high pressure
pump 4
26 Motor protection switch
advance pressure
pump
30 Switch "On" constantly
occupied (control in-
put)
31 Switch "On" constantly
occupied (display)
32 Switch "Off" constantly
occupied (control in-
put)
40 Water shortage
41 Water temperature is
too high
42 Leakage switch-off 1
(30 minutes of continu-
ous operation).
43 Leakage switch-off 2
(minor leakage)
45 Pressure too high
(> 300 bar)
47 Overflow valve adjust-
ed incorrectly
10
-
EN
48 HDC type set incorrect-
ly
50 Pressure sensor for
high pressure does not
transmit signal
51 Flow switch permanent
signal
52 Temperature sensor
does not transmit sig-
nal
– Error type 1: Emergency operation of
the system with remaining high pres-
sure pumps.
– Error type 2: The operating readiness of
the system is switched off and the high
pressure pumps are shut off.
– If one of the above errors occurs, the
Error
appliance can be restarted after the er-
type
ror has been corrected by activating the
2
release switch.
Note: The 40 most recently occurred errors
are saved with the respective date and time
2
and can be shown on the display.
1
1
1
1
1
A Date of error event
B Time of error event
1
C Error number
D List location of error
E Number of saved errors
1
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2