Bush
High-Power Mode Control Fault
Cordless vacuum runs only on low power; high power or turbo mode does not engage.
Advertisements
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.
Advertisements
Possible Causes
Faulty mode selector switch, Damaged handle PCB, High-power MOSFET failure on main PCB, Battery unable to supply high current
How to Fix / Troubleshooting
Safety first: Remove the battery before opening the handle or body.
- Check mode button: Press the power/mode button repeatedly and observe if any indicator LEDs change. If the button feels stuck or does not click, it may be faulty.
- Test with another battery: If available, try a different Bush battery. A weak battery may not support high power and the PCB may prevent turbo mode.
- Inspect handle PCB (advanced): Open the handle and check the mode switch and PCB for damage or loose connections.
- PCB diagnosis: If the mode switch works mechanically but the vacuum never switches to high power, the main PCB high-power driver may have failed. Replace the main PCB.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Main Control PCB
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements