Kärcher HDS 5/11 U Service Manual

Also see for HDS 5/11 U: User manual Instructions Original instructions Manual Manual

Contents

Kärcher HDS 5/11 U Service Manual Manual pdf 46 page image

46 English 5.906-487.0 Rev. 00 (04/10)8 TroubleshootingFault Remedial actionUnit does not work – No mains power. Check the mains connection.– Check/replace the appliance switch.– Overflow valve / pressure switch stuck - check, grease, replace.– Motor overloaded, overheated; switch off the appliance to "0/OFF" andlet it cool down; switch appliance on.– The exhaust temperature limiter has been triggered, the heating coil isfull of soot and exhaust temperature is too high.Press reset button of the exhaust temperature limiter.Remove the soot from the heating coil and readjust the burner if nec-essary.Device is not building up pres-sure– Air within the system, ventilate pump.With open hand spray gun turn device on and off multiple times with thedevice switch.Note for appliances without hose drum:By dismantling the high pressure hose from the high pressure connec-tion the venting process is accelerated.Fill/replace external detergent container if empty.Check connections and conduits.– Filter in the water connection is dirty, clean filter.– Water supply volume too low, check water supply volume (refer toSpecifications).– Tap closed, open tap.– High pressure nozzles worn, replace.Device continuously turns onand off while hand spray gun isopen– High pressure nozzle plugged, clean nozzle.– Heating coil calcified, decalcify appliance.Appliance continuously turns onand off while hand spray gun isclosed– Leak in the high pressure system; check the high pressure system andconnections for leaks.– Pressure holding valve in the cylinder head leaks; check.Appliance leaks, water dripsfrom the bottom of the appli-ance.– Pump leaks, safety valve not tight.Note: 3 drops/minute are allowed.– High pressure seals leak; replace.Appliance is leaking oil – Appliance is losing oil between the cylinder head and the piston casing;replace the oil seals.Device is not sucking in deter-gent– Nozzle set to "High pressure"; set the nozzle to "CHEM".– The external detergent container is empty; fill/replace external deter-gent container.– The filter at the detergent suction hose is dirty; clean filter.– Dosing on filter is closed; open dosing.– The backflow valve is plugged; remove the detergent hose and loosenthe backflow valve using a blunt object.– Injector dirty or worn; replace injector.Burner does not start – Fuel tank empty; fill fuel.– Fuel filter dirty; change fuel filter.– Fuel valve is not opening; check, replace.– Fuel pump does not feed any fuel; check, replace the fuel pump andthe drive parts.– Lack of water; check water connection/supply lines.– Ignition electrodes are dirty or worn; clean or replace the ignition elec-trodes.– Ignition electrodes are set incorrectly; check, correct the ignition geom-etry of the ignition electrodes and the fuel nozzle.– Ignition transformer defective; check.