C16
Dreame
Wi‑Fi Module or Antenna Fault
Robot vacuum reports C16; Wi‑Fi or cloud connection error, cannot connect to app.
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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
Weak Wi‑Fi signal at dock location, Incorrect Wi‑Fi password or unsupported band, Damaged internal Wi‑Fi antenna, Faulty Wi‑Fi module on main board
How to Fix / Troubleshooting
Safety: No electrical disassembly is required for basic troubleshooting.
- Check network: Ensure your router is on and broadcasting a 2.4 GHz network (most Dreame robots do not support 5 GHz only).
- Move dock closer: Place the charging dock within good Wi‑Fi coverage, away from thick walls or metal objects.
- Reset Wi‑Fi: Use the robot's Wi‑Fi reset button combination (refer to manual) to enter pairing mode, then reconnect via the Dreame app.
- Firmware and app: Update the Dreame app and ensure your phone is on the same 2.4 GHz network.
- Internal check (advanced): If the robot cannot see any networks, open the housing and inspect the Wi‑Fi antenna cable connection to the main board.
- Replacement: Replace the main control board or Wi‑Fi antenna module if hardware failure is confirmed.
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Repair Difficulty
Medium
3/5
Required Part
Wi‑Fi Antenna / Main Control Board
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