Error Code	Symptom	Fault Type	Guide
B1	Battery indicator shows one flashing LED and vacuum stops after a few seconds even after long charge	Battery Capacity Degradation	View Details
B2	Battery LEDs all flash together and vacuum will not start, often after storage	Battery Pack Lockout / Deep Discharge Protection	View Details
E1	Cordless vacuum will not power on, battery LEDs flash once then go dark	Battery Pack Protection Trip / Undervoltage Lockout	View Details
E2	Vacuum cuts out within a few seconds of starting, E2 displayed on handle or battery LED flashes red twice repeatedly	Overcurrent / Motor Overload Protection	View Details
E3	Brush bar will not rotate, E3 shown on display or brush LED flashes red, suction still works	Motorised Floorhead Brush Jam / Overload	View Details
E4	Vacuum stops and displays E4 or flashes four red LEDs when used on high power for a short time	Overtemperature Shutdown (Motor or Battery Overheat)	View Details
E5	Vacuum will not charge, charger LED flashes or E5 appears on display when battery is docked	Battery Charging Fault / Charger-Battery Communication Error	View Details
E6	Vacuum powers on but immediately shuts off with E6 or six red flashes, even with empty bin and clean filters	Main Control PCB Fault / Internal Electronics Error	View Details
E7	LED indicator shows E7 or seven red flashes when trying to start, motor does not spin	Motor Tachometer / Speed Feedback Error	View Details
E8	Display shows E8 or battery LEDs flash in a pattern when filters are missing or incorrectly fitted	Filter Detection / Airflow Sensor Fault	View Details
E9	Vacuum runs only on low power, cannot switch to turbo, E9 or nine red flashes when pressing power mode button	High-Power Mode Inhibited / Battery Current Limit	View Details
F1	Charger LED flashes rapidly and vacuum battery does not accept charge, F1 shown on some docking stations	Battery Overvoltage / Incompatible Battery Detected	View Details
F2	Charger LED stays off when plugged in, F2 error on some smart bases, vacuum battery appears dead	Charger Power Supply Failure	View Details
–	Attachments (crevice tool, upholstery tool) fall off easily during use	Accessory Retention / Nozzle Clip Wear	View Details
–	Battery gets excessively hot to touch during use or charging	Battery Overheating	View Details
–	Charger or docking station makes buzzing or humming noise	Charger Transformer / Electronic Noise	View Details
–	Dust bin difficult to remove or reattach to main body	Dust Bin Alignment / Mount Wear	View Details
–	Dust bin will not latch closed or pops open during use	Dust Bin Latch / Hinge Failure	View Details
–	Dust or fine powder blowing out of exhaust vent during use	Filter Bypass / Damaged HEPA Filter	View Details
–	Excessive vibration felt in hand during use	Rotating Assembly Imbalance	View Details
–	Extension wand or tube collapses or separates during use	Wand Lock / Telescopic Mechanism Failure	View Details
–	Floorhead lights up but brush bar does not spin, suction is normal	Brush Motor / Drive Failure	View Details
–	LED headlight on floorhead does not work but brush spins normally	Floorhead LED Circuit Failure	View Details
–	Static shocks felt when touching metal parts of vacuum during use	Static Electricity Build-Up	View Details
–	Unpleasant musty or burning smell from vacuum exhaust	Contaminated Filters / Overheated Dust	View Details
–	Vacuum body becomes uncomfortably hot to hold near motor area	Motor Overheating / Cooling Path Restriction	View Details
–	Vacuum cannot be wall-mounted securely; dock feels loose or unstable	Wall Dock Mounting / Bracket Failure	View Details
–	Vacuum has very weak suction even with fully charged battery	Airflow Restriction / Cyclone Blockage	View Details
–	Vacuum leaves lines of debris on carpet and does not pick up well from floor	Brush Bar Performance Degradation	View Details
–	Vacuum makes a rattling or clunking noise from the floorhead while in use	Brush Bar / Floorhead Mechanical Wear	View Details
–	Vacuum runs but makes a loud high-pitched whine or screeching noise	Motor Bearing Wear / Fan Damage	View Details
–	Vacuum runs only when trigger is held but does not latch in continuous mode (if model has a latch)	Continuous Run Latch / Mode Switch Fault	View Details
–	Vacuum runtime much shorter than specified, but battery indicator still shows charge remaining	Battery Calibration / Capacity Loss	View Details
–	Vacuum shuts off intermittently during use without any error code, then restarts after a short wait	Thermal Cut-Out Activation	View Details
–	Vacuum will not start at all, no lights, but battery charges normally on charger	Power Path / Trigger Switch Failure	View Details
–	Visible sparks or strong burning smell from motor area	Motor Electrical Failure	View Details

Swan Cordless Vacuums Error Codes

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