E14
Stihl
Battery Pack / DC Power Fault
Display shows E14; battery icon flashes on a cordless Stihl carpet cleaner and unit will not run
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Depleted or failed lithium-ion battery pack, dirty battery contacts, overheated battery, defective DC-DC converter board
How to Fix / Troubleshooting
Safety: Power off the unit and remove the battery pack before inspection.
- Charge battery fully: Place the battery on the correct Stihl charger until it reaches full charge. If the charger indicates a fault, the battery may be defective.
- Clean contacts: Wipe the battery terminals and the mating contacts in the cleaner with a dry cloth. Remove any corrosion with isopropyl alcohol.
- Cool down: If the battery is warm to the touch, allow it to cool to room temperature before reinserting.
- Inspect DC board: If multiple batteries show E14, the internal DC-DC converter or battery interface board may be faulty and require replacement.
Do not open or attempt to repair the battery pack itself; replace with a genuine Stihl pack.
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Repair Difficulty
Medium
3/5
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