E15
Siemens
User Interface / Keypad Fault
Vacuum shows E15 and none of the control buttons respond, though battery LEDs may still light.
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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
Damaged handle keypad membrane, Faulty UI PCB, Liquid ingress into control panel, Disconnected ribbon cable between UI and main PCB
How to Fix / Troubleshooting
Safety: Remove the battery before opening the handle or control panel.
- 1. Inspect for liquid damage: Check around the buttons for signs of dried liquid or corrosion. If the vacuum was exposed to spills, the keypad may be damaged.
- 2. Open handle housing: Remove screws and carefully separate the handle halves to access the UI PCB and keypad.
- 3. Check ribbon cable: Ensure the ribbon cable from the UI PCB to the main PCB is fully inserted and locked in its connector.
- 4. Clean contacts: If there is light corrosion, gently clean with isopropyl alcohol and a soft brush, then allow to dry completely.
- 5. Replace UI module: If buttons still do not respond, replace the entire handle UI PCB and keypad assembly.
Do not use water or household cleaners inside the handle; only use electronics-safe cleaning methods.
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Repair Difficulty
Hard
4/5
Required Part
Handle User Interface PCB / Keypad
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