Faults Without Display On The Console - Kärcher HDS 9/50 De Tr1 Service Manual

13.2 Faults without display on the console

Fault
Water pressure too low /
The device does not reach the full
pressure
Water leak between cylinder head
and crankcase
Water is not being heated
Insufficient or no
function detergent
Possible cause
Check / clean the water filter.
Check water supply volume, increase if necessary.
Check the water quantity in the two 250 l tanks
Open stop cock water tanks.
Bleed device. Check suction line for leaks / clogging.
Check frost protection valve.
Check/replace high-pressure nozzle.
Check the high-pressure hose; appropriate diameter?
Check safety valve for leaks / replace if necessary.
Check/adjust/replace overflow valve.
Check the pressure and suction valves for leaks / replace.
High and low pressure seals are worn; replace.
Check / adjust motor speed.
Check / adjust /grease / replace speed control.
Coupling motor - check / replace transmission.
Check / replace intermediate gear.
Leakiness of 1 drop per minute and piston is acceptable.
Check / replace high pressure and low pressure seals.
Check / correct temperature settings.
Check / clean / replace flow switch (reed switch).
Check / refill filling level in the fuel tank
(If the bargraph shows < 3 bars, the burner is switched off).
Check / replace temperature sensor after the boiler outlet.
Check / replace fuel filter.
Check / replace the solenoid valve fuel pump.
Check / adjust setting fuel pump / replace pump.
Check / replace coupling fuel pump.
Check / replace blower motor and impeller.
Check / adjust the setting air flap.
Check / replace fuel nozzle.
Check / replace ignition cables.
Check / replace ignition transformer.
Check / adjust distances of the ignition electrodes.
Decalcify the heating coil.
Check / refill the detergent level.
Check / correct setting of the dosing valve.
Clean filter detergent on the suction hose.
Check / replace the solenoid valve detergent.
Check the orifice plate at the inlet of the fine filter (in the inlet of the HP pump).
English 5.906-736.0 Rev. 00 (07/15)
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