Karcher B 40 W Bp D 51: Faults

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9 

Danger

Risk of injury! Before working on the appli-

ance, remove the Intelligent Key and the 

mains plug of the charger.



Drain and dispose of the dirt water and 

the residual fresh water.

If the display shows different error messag-

es or if the error cannot be remediated:



Remove the Intelligent Key.



Wait for 10 seconds.



Plug in the Intelligent Key.



If the fault recurs, call customer service.

Faults

Faults with display

Display

Remedy

ERR_I_BÜRSTE_049

Check if foreign matters block the brushes; remove foreign matter if required.

ERR_I_TURB_050

Check suction turbine for contamination and clean it if necessary.

ERR_U_BATT_001

Check battery; charge it if required. 

Faults without display on the console

Fault

Remedy

Appliance cannot be 

started

Stand-by. Turn the appliance off and reinsert the Intelligent Key. 

Turn the program selection switch to the desired programme.

Check battery; charge it if required. 

Make sure that all battery terminals are connected.

Insufficient water quantity Check fresh water level, refill tank if necessary.

Increase the water volume on the regulating knob for water volume.

Unscrew the lock of the fresh water reservoir. Remove and clean the fresh water filter. Insert the filter and screw 

in the lock.

Remove the water distribution strip from the cleaning head and clean water canal (only R cleaning head).

Check hoses for blockages; clean if required.

Do not add detergents Increase the water volume to activate the dosing pump.

Check the detergent level

Insufficient vacuum 

performance

Clean the seals between dirt water reservoir and cover and check for tightness, replace if required.

Wastewater reservoir is full; shut off the appliance and empty the wastewater reservoir

Clean the fluff filter.

Clean the vacuum lips on the vacuum bar, replace if required

Check suction hose for blockages; clean if required.

Check the suction hose for tightness; replace if required.

Check if the cover on the dirt water discharge hose is closed

Check the setting of the vacuum bar.

Insufficient cleaning result Check the brushes for wear, replace if required.

Brushes do not turn

Check if foreign matters block the brushes; remove foreign matter if required.

If over-current switch in the electronics system has been triggered, turn programme selection switch to "OFF". 

Afterwards, set it back to the desired programme.

Vibrations during cleaning You might need to use softer brushes.

In case of faults that cannot be remedied using the table below please contact the customer service. 

22 EN