Kärcher HDC 40/8 Manual page 27

Fault
Appliance is not running
Pump starts during the stand-by
period and not when the hand
spray gun is opened.
Full pressure does not build up
in the appliance
High pressure pump is knock-
ing; manometer is swaying wild-
ly
Overflow valve opens and clos-
es continuously during 0 takeo-
ver
Error code 01 is displayed
Error number 10, 11, 12, 13 is
displayed
Error number 18, 19, 20, 21 is
displayed
Error code 26 is displayed
Error code 40 is displayed
Error code 41 is displayed
Error code 42 is displayed
Error code 43 is displayed
Error code 45 is displayed
Fault number 47 is displayed
(with tripped flow switch, the ac-
tual pressure in the system is
significantly lower than the
nominal pressure)
Error code 48 is displayed
Error code 50 is displayed
Error code 51 is displayed
Error code 52 is displayed
Possible cause
There is no voltage in the machine. Check electrical mains.
Motor protection switch for the con-
trol has been triggered.
Pressure sensor for high pressure
or cable to pressure sensor defec-
tive.
Flushed the nozzle.
Suction site pipe leaking.
Safety valve is leaky.
Overflow valve is leaking or set too
low.
Valve in the pump defective, high-
pressure solenoid valve does not
close.
Pump is sucking air.
Valve plate or valve spring is defec-
tive.
Advance pump calcified or defective. Check advance pump.
Leakage in the high-pressure pipe-
line system or hand spray gun leak-
ing.
Backflow valve or control piston
seal leaking in overflow valve.
Control board defective, green
LEDs are not blinking.
Overflow protection switch of the
respective high pressure pump has
been triggered.
Thermal sensor of the respective
motor has been triggered.
Overflow protection switch of the
advance pressure pump has been
triggered.
The water shortage safeguard in
the swimmer tank has got activated.
Swimmer valve is jammed.
The temperature sensor in the
swimmer tank has been activated.
Leakage in the high-pressure pipe-
line system.
Too many consumer loads open at
the same time.
Pressure sensor for high pressure
defective.
Leakage in the high-pressure pipe-
line system.
Pressure sensor for high pressure
defective.
Pressure too high (> 300 bar).
Pressure sensor for high pressure
defective.
Overflow valve adjusted incorrectly. Adjust the overflow valve correctly.
Nominal pressure entered incor-
rectly in the display menu.
Pressure sensor for high pressure
defective.
HDC type incorrectly set in the dis-
play menu.
Pressure sensor for high pressure
does not transmit signal.
The flow switch provides a perma-
nent signal although no pump is
running.
Temperature sensor in the float
container does not transmit signal.
Remedy
Check motor protection switch.
Replace pressure sensor or cable.
Replace the nozzle.
Check screw fittings and hoses.
Check the setting; install new washers, if re-
quired.
Check valve parts; replace damaged parts;
clean the dirt.
Replace defective components.
Check suction system and remove leaks.
Replace defective components.
Locate and seal leakage.
Repair the overflow valve.
Check control board, replace if necessary.
Rectify cause for over-loading.
Rectify cause for over-loading.
Rectify cause for over-loading.
Remove the water shortage.
Check swimmer valve for free movement.
Reduce water infeed temperature.
Locate and seal leakage.
Close some consumer loads.
Replace pressure sensor.
Locate and seal leakage.
Replace pressure sensor.
Incorrect nozzle inserted. Insert correct nozzle. Operator
Replace pressure sensor or cable.
Enter nominal pressure correctly.
Replace pressure sensor or cable.
Set HDC type to Standard.
Check pressure sensor and cable, replace if
necessary. Check board A5.
Check flow switch, replace if necessary.
Check temperature sensor and cable, replace
if necessary. Check board A5.
11
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EN
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