E16
Festool
Bluetooth Module Hardware Fault
Vacuum shows E16 and Bluetooth indicator flashes abnormally, remote cannot connect
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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
Failed Bluetooth radio module, Antenna cable damage, Firmware corruption in Bluetooth module, Overvoltage damage from ESD
How to Fix / Troubleshooting
Safety first: Remove the battery before accessing internal electronics.
- 1. Confirm pairing procedure: Ensure you are following the exact Festool pairing steps for your cordless vacuum and remote. Incorrect pairing can mimic a fault.
- 2. Check antenna and wiring: Open the housing and locate the Bluetooth module and its antenna (wire or PCB trace). Ensure the antenna connection is intact and not broken.
- 3. Inspect module for damage: Look for burn marks, cracked components, or corrosion on the Bluetooth module.
- 4. Reset module (if supported): Some models allow a factory reset of wireless settings via a button combination. Perform this reset according to the manual.
- 5. Replace Bluetooth module: If E16 persists and the module shows signs of failure, replace the Bluetooth module assembly. If it is integrated into the main control board, the entire control electronics module must be replaced by an authorized service center.
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Repair Difficulty
Hard
4/5
Required Part
Bluetooth Receiver Module
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