The Shark STRATOS CLEAN SENSE IQ MultiFLEX IZ840H is a versatile cordless stick vacuum featuring Clean Sense IQ dirt detection technology, MultiFLEX technology for under-furniture reach, a self-cleaning brushroll, DuoClean PowerFins for floor-to-carpet cleaning, an Anti-Allergen Complete Seal with HEPA filter, LED headlights, and a removable pod for handheld cleaning. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.
Key components: Motorized floor nozzle with DuoClean PowerFins, Clean Sense IQ sensor, MultiFLEX folding handle, removable battery pod, LED headlights, Anti-Allergen Complete Seal system, and various attachments.
| Feature | Description |
|---|---|
| Clean Sense IQ | Automatically increases suction when dirt is detected |
| MultiFLEX Technology | Folds flat for cleaning under furniture and beds |
| Self-Cleaning Brushroll | Reduces hair wrap for maintenance-free cleaning |
| DuoClean PowerFins | Combines soft roller and PowerFins for all floor types |
| Anti-Allergen Complete Seal | HEPA filter traps 99.9% of dust and allergens |
| LED Headlights | Illuminates hidden dirt in dark areas |
| Removable Pod | Converts to a handheld vacuum for above-floor cleaning |
| Battery Indicator | LED display shows remaining runtime |
| Wand Release Button | Quickly detaches wand for storage or handheld use |
| Charging Dock | Wall-mountable dock for convenient storage and charging |
Unpack all components and inspect for damage.
WARNING! Ensure the vacuum is powered OFF during assembly. Keep fingers clear of moving parts.
Fully charge the vacuum before first use.
CAUTION! Do not use on wet surfaces or to pick up liquids, flammable materials, or sharp objects.
Main controls located on the handle. Power Button: Turns vacuum ON/OFF. Mode Button: Toggles between Eco (standard) and Max (high power) suction. Battery Indicator: LED lights show remaining charge (4=full, 1=low). Clean Sense IQ Indicator: Lights up blue when increased suction is activated. Headlights: Automatically turn on when vacuum is powered.
Handle Features: Wand release button, trigger for handheld mode attachment release.
Maintenance Indicators: Filter icon flashes when filter needs cleaning. Brushroll icon flashes if brushroll is obstructed.
Use appropriate mode and attachment for each cleaning task.
Tip: For best results on carpets, make slow, overlapping passes.
Empty dust cup after each use or when full indicator appears.
WARNING! Do not use if dust cup is damaged or door does not seal properly.
Regular maintenance ensures optimal performance.
CAUTION! All parts must be completely dry before reassembly to prevent damage.
Use only the provided charger and battery.
WARNING! Do not expose battery to fire, water, or extreme temperatures. Do not attempt to disassemble.
FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © SharkNinja Operating LLC. All trademarks are property of SharkNinja. Battery contains lithium-ion; dispose of according to local regulations. For support, visit sharkclean.com or contact 1-800-798-7398.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Vacuum won't turn on | Battery not charged/inserted | Charge battery fully; ensure pod is securely locked. |
| Reduced suction | Full dust cup/clogged filter | Empty dust cup; check and clean filters; clear hose/ nozzle blockages. |
| Brushroll not spinning | Obstruction/hair wrap | Power OFF, clear debris and cut away wrapped hair from brushroll. |
| Battery drains quickly | Old battery/Max mode use | Use Eco mode for general cleaning; replace battery if runtime is consistently short. |
| Clean Sense IQ not activating | Sensor dirty/mode setting | Clean sensor window on floor nozzle; ensure not in Max mode (IQ is disabled in Max). |
| Vacuum won't charge on dock | Poor contact/dock issue | Clean charging contacts on vacuum and dock; ensure dock is properly mounted and powered. |
Reset: Remove battery for 60 seconds, then reinsert.
Service: 1-800-798-7398; sharkclean.com