Kärcher Cordless Vacuums Error Codes

E1

Cordless vacuum will not start, display shows E1 immediately after pressing the power button

Battery Pack Communication Error

E10

Cordless vacuum shows E10 and will not power on after long storage

Deep Discharge / Battery Protection Lockout

E11

Cordless vacuum shows E11 and runs only at reduced power

Filter Blockage / Airflow Restriction Detected

E12

Cordless vacuum shows E12 and shuts off when the brush is activated on certain floor types

Brush Height / Floor Type Sensor Error

E13

Cordless vacuum shows E13 and the LED work light flickers or does not turn on

LED Lighting Circuit Fault

E14

Cordless vacuum shows E14 and emits a continuous beep, no functions work

Firmware / Internal Memory Error

E15

Cordless vacuum shows E15 and cannot switch between power modes

Mode Button / User Interface Error

E2

Cordless vacuum stops shortly after starting, display shows E2 and unit beeps

Overcurrent / Motor Overload Protection

E3

Cordless vacuum runs for a few seconds then stops, E3 appears on the display

Motor Temperature Sensor Fault / Overheating Detected

E4

Cordless vacuum does not respond to trigger, E4 displayed, sometimes after a drop or impact

Tilt / Crash Sensor or Safety Interlock Error

E5

Cordless vacuum stops and shows E5 when using turbo or maximum power mode

Overvoltage / Undervoltage Protection (Battery Voltage Out of Range)

E6

Cordless vacuum shows E6 and will not charge when placed on the charging station

Charging Circuit / Charger Communication Error

E7

Cordless vacuum display shows E7 and suction is disabled, brush may still rotate

Dust Container / Filter Not Detected or Not Installed Correctly

E8

Cordless vacuum shows E8 and brush roller will not turn, suction may still work

Brush Motor / Floor Nozzle Overload or Jam

E9

Cordless vacuum shows E9 and shuts down when switching between modes or accessories

Internal Communication Bus Error (Main PCB to Accessory/Nozzle)

Symptom

Brush roller does not spin, but suction is normal and no error code is shown

Brush Drive Failure

Symptom

Cordless vacuum blows dust out of the exhaust or around the filter area

Filter Bypass / Seal Failure

Symptom

Cordless vacuum emits a burning smell or visible smoke from the motor area

Motor Overheating / Electrical Short

Symptom

Cordless vacuum emits a strong chemical or electrical smell from the battery area

Battery Overheating / Venting Risk

Symptom

Cordless vacuum intermittently cuts out when the wand is moved or twisted

Intermittent Connection in Wand / Nozzle Wiring

Symptom

Cordless vacuum leaves fine dust smell or musty odor during use

Contaminated Filters / Dust Container Odor

Symptom

Cordless vacuum leaves lines of debris and does not pick up well from carpets

Brush Roller Inefficiency / Floor Nozzle Performance Loss

Symptom

Cordless vacuum makes a whistling noise and suction seems reduced

Air Leak in Suction Path

Symptom

Cordless vacuum makes rattling or clunking noises from the floor nozzle when moving back and forth

Mechanical Play in Nozzle / Loose Components

Symptom

Cordless vacuum produces a high‑frequency squeal from the floor nozzle when the brush is on

Brush Roller Bearing Noise

Symptom

Cordless vacuum runs but has very weak suction even with a fully charged battery

Airflow Restriction / Filter Saturation

Symptom

Cordless vacuum runs but makes a loud high‑pitched whine from the motor area

Motor Bearing Wear / Turbine Imbalance

Symptom

Cordless vacuum runs but the handle or body becomes excessively hot to the touch

Overheating Due to Restricted Airflow or Electrical Losses

Symptom

Cordless vacuum runs only in one power mode and ignores mode changes

Mode Control / Switch Failure

Symptom

Cordless vacuum shuts off after a few seconds of use with no error code displayed

Battery Voltage Sag / Protection Trip

Symptom

Cordless vacuum stops when tilted to certain angles (e.g., when cleaning high areas)

Tilt Safety / Orientation Sensor Sensitivity

Symptom

Cordless vacuum trigger must be held very hard or at a specific angle to keep the unit running

Worn Trigger Switch / Mechanical Misalignment

Symptom

Cordless vacuum vibrates excessively, especially at high power

Imbalanced Brush Roller or Fan

Symptom

Cordless vacuum will not turn on at all, no lights or sounds

No Power / Dead Unit

Symptom

Cordless vacuum’s accessories (crevice tool, upholstery tool) are difficult to attach or fall off easily

Accessory Coupling Wear / Deformation

Symptom

Cordless vacuum’s charging indicator flashes but battery does not gain charge

Charging Failure / Battery Not Accepting Charge

Symptom

Cordless vacuum’s dust container door will not close or pops open during use

Bottom Flap / Door Latch Fault

Symptom

Cordless vacuum’s dust container keeps falling off during use

Dust Container Latch Failure

Symptom

Cordless vacuum’s LED battery indicator shows full, but runtime is very short

Battery Capacity Loss / Calibration Issue

Symptom

Cordless vacuum’s LED work light stays on even when the vacuum is switched off

Stuck LED Driver / Control Logic Fault