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7
Fault
Possible cause
Remedy
of whom
Appliance is not running; indicator lamp
for operations readiness is not illuminat-
ed
There is no voltage in the machine.
Check electrical mains.
Electrician
Main switch is switched off.
Turn on the main switch.
Operator
Motor protection switch for the control and the
prepressure pump has been triggered.
Check motor protection switch.
Customer Service
Control board defective, green LEDs are not
blinking.
Check control board, replace if necessary.
Customer Service
Pump starts during the stand-by period and
not when the hand spray gun is opened.
Pressure sensor or cable to pressure sensor
defective.
Replace pressure sensor or cable.
Customer Service
Full pressure does not build up in the ap-
pliance
Flushed the nozzle.
Replace the nozzle.
Operator
Suction site pipe leaking.
Check screw fittings and hoses.
Operator
Safety valve is leaky.
Check the setting; install new washers, if required.
Customer Service
Overflow valve is leaking or set too low.
Check valve parts; replace damaged parts; clean the dirt. Customer Service
Valve in the pump defective, high-pressure
solenoid valve does not close.
Replace defective components.
Customer Service
High pressure pump is knocking; ma-
nometer is swaying wildly
Pump is sucking air.
Check suction system and remove leaks.
Operator
Valve plate or valve spring is defective.
Replace defective components.
Customer Service
Advance pump calcified or defective.
Check advance pump.
Operator
Overflow valve opens and closes contin-
uously during 0 takeover
Leakage in the high-pressure pipeline system
or hand spray gun leaking.
Locate and seal leakage.
Operator
Backflow valve or control piston seal leaking
in overflow valve.
Repair the overflow valve.
Customer Service
Indicator lamp "water low" is illuminated
(error no. 01)
The water shortage safeguard in the swimmer
tank has got activated.
Remove the water shortage.
Operator
Swimmer valve is jammed.
Check swimmer valve for free movement.
Operator
Indicator lamp "engine overheated" is il-
luminated (error no. 02)
Thermal sensor in the engine or the over-cur-
rent protection switch has been triggered.
Rectify cause for over-loading.
Customer Service
Indicator lamp "collection error" is blink-
ing (error no. 03)
The temperature sensor in the swimmer tank
has been activated.
Reduce water infeed temperature.
Operator
Indicator lamp "collection error" is blink-
ing (error no. 04)
Leakage in the high-pressure pipeline sys-
tem.
Locate and seal leakage.
Operator
Too many consumer loads open at the same
time.
Close some consumer loads.
Operator
Flow switch defective.
Replace flow switch.
Customer Service
Indicator lamp "collection error" is blink-
ing (error no. 05)
Leakage in the high-pressure pipeline sys-
tem.
Locate and seal leakage.
Operator
Flow switch defective.
Replace flow switch.
Customer Service
Indicator lamp "collection error" is blink-
ing (error no. 06)
Pressure sensor does not transmit signal.
Check pressure sensor, replace if required.
Customer Service
Indicator lamp "collection error" is blink-
ing (error no. 07)
Temperature sensor does not transmit signal. Check temperature sensor, replace if required.
Customer Service
Accessories
Detergent
Detergents simplify the cleaning tasks. The table gives a selection of detergents. Please read the instructions on the packaging carefully before working with any detergents.
Area of application
Target group
Detergent
Kärcher description
Dosaging in high pres-
sure
Foaming
Food industry/disassembly facilities Disinfection cleaning
RM 732
1-3%
Disinfectant
RM 735
0,75-7%
Foam disinfecting detergent, alkali-based
RM 734
2-5%
Beverage facilities/wine cellars
Foam detergent, alkali-base
RM 58 ASF
1-2%
Foam cleaner, acidic
RM 59 ASF
1-2%
Foam disinfecting detergent, alkali-based
RM 734
2-5%
Community
Exterior foam cleaner, neutral
RM 57
1-2%
Disinfecting cleaner, inside
RM 732
1-3%
Agriculture
Disinfection cleaning
RM 732
1-3%
Disinfectant
RM 735
0,75-7%
High-pressure cleaning
Beverage facilities/wine cellars
Universal cleaner
RM 55
0,5-8%
Foam disinfecting detergent, alkali-based
RM 734
2-5%
Community
Active cleanser, alkali-based
RM 81
1-5%
Agriculture
Active cleanser, alkali-based
RM 31
1-5%
Active cleanser, alkali-based
RM 81
1-5%
Ship equipment
Active cleanser, alkali-based
RM 81
1-5%
Automotive/lorry workshop
Active cleaner, alkali-based (engine/parts)
RM 31
1-5%
Active cleaner, alkali-based (vehicle, top and bottom
wash)
RM 81
1-5%
Floor cleaning
Food industry/disassembly facilities Intensive basic cleaner
RM 750
1-5%
Floor basic cleaner
RM 69
0,5-1%
Beverage facilities/wine cellars,
community
Intensive basic cleaner
RM 750
1-5%
Floor basic cleaner
RM 69
0,5-1%
Automotive/lorry workshop
Intensive basic cleaner
RM 750
1-5%
Floor basic cleaner
RM 69
0,5-1%
Ship equipment
Intensive basic cleaner
RM 750
1-5%
Floor basic cleaner
RM 69
0,5-1%
Washing brush
Community
Exterior active cleanser, alkali-based
RM 81
1-5%
Universal cleaner
RM 55
0,5-8%
Automotive/lorry workshop
Active cleaner, alkali-based (vehicle, top and bottom
wash)
RM 81
1-5%
Ship equipment
Exterior active cleanser, alkali-based
RM 81
1-5%
18
EN
Summary of Contents for HDC 20/16
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