Kärcher HD 20/15-4 Service Manual

Also see for HD 16/15-4: Manual

Kärcher HD 20/15-4 Service Manual Manual pdf 23 page image

English 5.906-494.0 Rev. 01 (04/11) 23– No power Check whether the voltage indicated on the typeplate corresponds to the voltage of the socket. Check the mains connection cable for damages.– Indicator lamp is blinking green Operational readiness period has expired. Switchon/off the appliance again.– The water shortage fuse (option) was triggereddue to low water inlet pressure.The indicator lamp "lack of water" will illuminate. Check water inlet pressure, minimum value see"Specifications".Turn the device switch to "0" and turn on again torestart the system.– Motor overloaded/ over-heated or electrical circuitbreaker or winding protection switch has got re-leased. Switch off appliance and let it cool down. Removethe cause of the problem. Turn on the applianceagain.The indicator lamps display the operating states(green) and interruptions (red).Reset: Set the appliance switch to "0". Wait for a while. Set the appliance switch to "I". Continuous green:– The appliance is now ready for operation. 1x blinking green:– Operational readiness has expired after 30 min-utes.– The appliance has switched off after 30 minutes ofcontinuous operation (safety if the high pressurehose bursts). Continuous red light:– Electrical problems in appliance Pull out the mains plug. Call Customer Service. 1x blinking red:– High pressure side is leaky Check high pressure hose, hose connections andhand spray gun for leaks. 2x blinking red:– Engine overload/overheat Set the appliance switch to "0". Allow device to cool down. Set the appliance switch to "I".– Water pressure is too low Ensure adequate water line pressure. 3x blinking red:– Fault in the voltage supply Check main connections and mains fuse. 4x blinking red:– Power consumption is too high Call Customer Service.– Wrong nozzle Check nozzle for correct size (see technical spec-ifications).– Flushed the nozzle. Clean/ replace nozzle.– Filter is dirty. Clean filter at the water connection.Unscrew the filter casing, remove the filter, cleanit and replace it.– Air within the system Appliance ventilation:Unscrew the nozzle. Switch on the appliance andlet it run until the water exiting from the spray pipeis bubble-free. Switch off the appliance and fit thenozzle again.– Pipe inlets to pump are leaky or blocked Check all supply lines to the pump for leaks orblockages. 3 drops per minute are permitted and can comeout from the lower side of the appliance. Check all supply lines to the high-pressure pumpfor leaks or blockages. Appliance ventilation:Unscrew the nozzle. Switch on the appliance andlet it run until the water exiting from the spray pipeis bubble-free. Switch off the appliance and fit thenozzle again.6 Troubleshooting6.1 Appliance is not running6.2 Indicator lamp6.2.1 Operating status display6.2.2 Fault indication6.3 Device is not building up pressure6.4 High pressure side is leaky6.5 High pressure pump is vibrating

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