Kärcher B 50 W Manual page 20

Malfunction
The suction turbine runs at an in-
creased speed
The brushes do not rotate
The device vibrates during cleaning
DOSE version only: The detergent
dosing device does not work
The waste water drain hose is clogged 1. Open the dosing unit cover at the drain hose.
Malfunction
INSERT KIK
INCORRECT KIK
NO AUTHORISATION
RELEASE HANDLE SWITCH!
BATTERY LEVEL LOW
BATTERY EMPTY
WATER FLOW FAULT
DRIVE MOT. OVERL.
DRIVE MOT. BLOCK.
(1) (2) (3) (4)
red - - -
red - - -
red - - green
red - - green
red - green -
red - green green
red - green green
red green - -
red green - green
red green - green
red green green -
red green green green
20
Rectification
1. Drain the waste water.
2. Clean the float.
3. Check the fluff filter and clean if necessary.
4. Check the suction hose for clogging and clean if necessary.
5. Check the suction bar for clogging and remove any clogging if necessary
1. Check if the brushes are blocked by a foreign body and remove the foreign body if necessary.
2. Set the program switch to the desired program.
3. Lower the cleaning head.
1. Check that the brush(es) are correctly installed.
2. Use a softer brush.
3. Renew the brush.
1. Check the detergent level in the detergent canister.
2. Increase the detergent dosage.
3. Check the connection of the detergent hose to the detergent canister.
4. Clean the filter in the detergent canister.
5. Check the check valve in the hose to the cleaning head for blockage.
6. Check the hoses for leaks.
7. Check the functionality of the detergent pump.
2. Pull the suction hose off the suction bar and close it by hand.
3. Set the program switch to a programme with suction.
The blockage is sucked out of the drain hose into the waste water tank.
Malfunctions with information shown on the display
Cause
No intelligent key inserted.
The inserted Intelligent Key does not authorise the execution
of the selected function.
The inserted Intelligent Key does not authorise the execution
of the selected function.
When the device is switched on, a driving lever is operated.  Release both driving levers.
The battery is almost empty. The cleaning functions of the de-
vice are automatically switched off.
The battery is empty. The cleaning functions and the travel
drive are switched off.
The electric water valve is defective.
The current consumption of the driving motor is too high.
The driving motor is blocked.
Li-Ion battery status indicator
Status LED
1
Indicator LED 1
2
Indicator LED 2
3
Indicator LED 3
4
Indicator LED 4
5
Battery
6
Button
7
(5) Cause
- The battery is too hot.
green The battery management system is too hot.
- The battery is too cold for charging.
green The current consumption during charging is
too high.
The current consumption of the device is too
high.
green Short-circuit.
- Cell voltage too low during discharge.
green Cell voltage too high during charging.
green The battery voltage is too low.
- Malfunction during charging process.
green
- The battery is too cold to output power.
- Power output malfunction.
Rectification
 Insert an intelligent key.
 Use a different Intelligent Key.
 Possibly have the Intelligent Key used activated (depending on
the case).
 Use a different Intelligent Key.
 Possibly have the Intelligent Key used activated (depending on
the case).
 Drive the device to the charging station and charge the battery.
 Switch off the device, wait briefly and switch it on again. The drive
to the charging station. If necessary, push it to the charging station
when it is switched off. Charge the battery.
 Contact customer service.
 Check the travel drive train for foreign objects.
 Find a path with a lower gradient.
 Switch off the device, wait briefly, switch the device on again.
 Check the travel drive train for foreign objects.
 Jack up each drive wheel individually and check whether it can be
turned.
Rectification
Allow the battery to cool down.
Allow the battery to cool down.
Move the device to a warmer place and wait until the battery has warmed up.
Unplug the mains plug of the charger. Wait 10 seconds. Reinsert the mains
plug. If the malfunction is displayed again, replace the charger.
Switch off the device. If the malfunction occurs again after switching on, look
for the fault in the device.
Check all battery connections.
Charge the battery.
Discharge the battery to 20% remaining capacity. Then charge the battery.
Charge the battery.
Unplug the mains plug of the charger. Wait 10 seconds. Reinsert the mains
plug. If the malfunction is displayed again, replace the charger.
Move the device to a warmer place and wait until the battery has warmed up.
Switch off the device. If the malfunction persists, contact Customer Service.
English
1. Press the button for 5 seconds.
● No LED lights up: Charge the battery.
● The status LED lights up green: Together, all 5
LEDs indicate the battery charge state.
● The status LED lights up red: The indicator LEDs
indicate a malfunction. Malfunctions described in
the following table can be remedied by the user.
Contact KÄRCHER Customer Service in the case of
fault displays that are not described above.